ADC

Explore 288 ADC vintage audio models — specs, production history, reviews, and market values in the VTA archive.

If you're into American hi-fi from the transistor boom, you can't skip ADC. Their significance isn't about being the most exotic, but about delivering genuinely clever engineering that made good sound more accessible. In a landscape of esoteric, wallet-emptying brands, ADC was the savvy engineer's choice, offering performance that punched way above its price point and forced the big names to take notice.

They're legendary for two lines. First, their moving magnet cartridges, especially the XLM series. These were famously low-mass, high-compliance trackers that danced in grooves others struggled with, becoming a benchmark for the era. Then came the Sound Shaper equalizers. These weren't just boom-and-tizz boxes; they were serious, quiet, integrated components that brought studio-style tone control to the living room and defined the look of '70s racks.

For collectors, ADC is a treasure trove of undervalued gems. Later cartridges and some integrated units were rebadged OEM fare, so focus on the golden era: the original XLM cartridges (mind their fragile stylus assemblies) and the early, metal-faced Sound Shapers. Their build quality and innovative spirit from that period are undeniable, offering a massive slice of performance-per-dollar history that still delights on a vintage turntable.

None

• 30 Mk. II — ADC 30 Mk. II phono cartridge — archive documentation is incomplete; no verified specs, dates, or pricing available. A placeholder entry pending further research.

Cartridges

• 220X — ADC 220X induced-magnet phono cartridge, part of the X-Series from Audio Dynamics Corporation. Reviewed in High Fidelity (Dec 1970) and HiFI-Stereo (1971).
• 303B — ADC 303B (1972) compact full-range speaker system, $80, reviewed in High Fidelity March 1972. Little else is documented.
• K — The ADC K8 (1973) is a reliable moving iron cartridge built for vintage changers. Specs, tracking force, and real owner reviews.
• K 3 E — The ADC K3 E exists only in parts listings—no specs, no history, just a name on a stylus box.
• K-8E — The ADC K-8E phono cartridge delivers 5.8 mV output and elliptical tracing for detailed vinyl playback. Specs, setup, and replacement stylus info.
• K5E — The ADC K5E is a lightweight moving iron phono cartridge made in the USA, with elliptical stylus and 5.75 g weight. Specs, compatibility.
• K6E — The ADC K6E phono cartridge (USA-made) uses a conical diamond stylus (0.3 x 0.7 mil) and 2.5g tracking. Specs, history, and collector pricing.
• K7E — The ADC K7E is a USA-made moving iron phono cartridge with elliptical stylus, 5 mV output, and 2.0–3.0g tracking. Specs, value, and replacement info.
• K8 — The ADC K8 was a budget MM cartridge made for BSR record changers in the 1980s—reliable, replaceable, and still in demand for restorations.
• K8C — The ADC K8C is a budget-friendly, premounted phono cartridge with smooth sound and low tracking force—ideal for vintage turntable users who value ease and warmth over precision.
• QLM (1970s–1980s) — The ADC QLM was the budget moving magnet cartridge that came with countless vintage turntables—durable, serviceable, and still solid today at $25–$50 used.
• QLM-30 MKIII — The ADC QLM-30 MKIII was a no-frills, serviceable moving magnet cartridge built for budget turntables—durable, replaceable.
• QLM-32 MKIII — The ADC QLM-32 MKIII is a reliable, mid-tier moving magnet cartridge from the 1970s–80s, valued for its durability and plug-and-play performance on vintage turntables.
• QLM-34 MKIII — The ADC QLM-34 MKIII is a mid-tier 1970s moving magnet cartridge known for its balanced sound, low mass, and surprising detail—still a smart buy for vintage turntable enthusiasts.
• QLM-36 — ADC QLM-36 MKIII replacement stylus—special elliptical diamond (.0003 x .0007-inch), shared XLM/ZLM/ASTRION body, $36.95–$69.95.
• QLM-series — The ADC QLM-series cartridges offer detailed, transparent sound with replaceable styli — from conical to Diasa elliptical. Prices, specs, and user insights.
• QLM30 (1976–1984) — ADC QLM30 MKIII (1976–1984): a 6g MM cartridge built as OEM for BSR and Dual changers. 0.7 mil conical, 3–5g tracking, RSQ30 styli still made.
• QLM30/III — ADC QLM30/III moving magnet phono cartridge — 6.5mV output, 3-5g tracking force, 0.018mm spherical diamond stylus. Used market prices, replacement styli, and buying advice.
• QLM30/III Mk III — The ADC QLM30/III Mk III is a no-frills moving magnet cartridge with diamond stylus and 3-5g tracking. Budget-friendly but fragile—owners report short lifespan and inconsistent sound.
• QLM30mkII — ADC QLM30mkII phono cartridge and replacement stylus, made in USA, fits QLM 30/II/III series and OEM Realistic, Zenith, Schneider changers.
• QLM31 — The ADC QLM31 Mk III was a budget phono cartridge for turntables like BSR and Garrard. Where does it fit in the ADC lineup? What do collectors pay?
• QLM32 MK3 — The ADC QLM32 MK3 cartridge delivers 5.5mV output and elliptical tracking in a 5.75g body. Specs, history, and current market price.
• QLM32/III Mk III — The ADC QLM32/III Mk III stylus features a .4 x .7 elliptical diamond tip and 2-3g tracking. Modern Pfanstiehl replacement keeps vintage ADC cartridges spinning.
• QLM33 — ADC QLM33 MkIII phono cartridge — no official specs, contested stylus (elliptical vs conical), and a thriving replacement-stylus market. Prices, compatibility, and buyer warnings.
• QLM33 MKII — The ADC QLM33 MKII features a highly polished special elliptical diamond stylus for crisp, detailed vinyl playback. Specs, pricing, and collector notes.
• QLM33 MkIII — ADC QLM33 MkIII induced-magnet phono cartridge — special elliptical diamond stylus, $70 in 1982. Little documented; no specs or production years confirmed.
• QLM33mkIII — ADC QLM33 Mk III induced-magnet phono cartridge — shared stylus ecosystem with QLM34 and K5E, listed in 1982 HiFi-Stereo cartridge roundup.
• QLM34 — ADC QLM34 Mk III replacement stylus for the QLM30 Mk III cartridge — 0.3 x 0.7 mil elliptical tip, 1.5–3.0 g tracking (2.25 g nominal). Fitment, pricing, and generic-stylus warnings.
• QLM36 — ADC QLM36 moving-iron cartridge — period reviewers praised its natural voice rendition and value; a named member of ADC's late-'70s Improved Series.
• QLM36 MKIII — The ADC QLM36 MKIII features a special elliptical diamond stylus for superior groove tracking and detailed sound. Pricing, specs, and collector insights.
• QLM36mkII — The ADC QLM36mkII is a moving iron phono cartridge with no official specs—just used listings, replacement styli, and quiet persistence.
• RK-8 — The ADC RK-8 replacement stylus features a highly polished elliptical diamond tip for crisp, harmonically rich vinyl playback.
• RK3E — The ADC RK3E stylus features a highly polished elliptical diamond tip for fine groove tracing and detailed sound. Specs, equivalents, and market price.
• RK5E — The ADC RK5E stylus ($29.95) is a nude elliptical diamond replacement for the ADC K5E cartridge—and a guardian of your vinyl.
• RK6E — The ADC RK6E replacement stylus (0.3 x 0.7 mil elliptical) served K-series cartridges—tiny, vital, and risky to buy NOS. Specs, warnings, and value.
• RK7E — The ADC RK7E is a 0.3 x 0.7 mil elliptical stylus for vintage ADC cartridges—still available for $33. Specs, compatibility, and market price.
• RK8E — The ADC RK8E stylus (1970s?) delivers 5.8 mV output and elliptical tracking for vintage cartridges. Specs, compatibility, and current pricing.
• RSQ-30 — The ADC RSQ-30 replacement stylus delivers elliptical diamond tracking at 2.0g for vintage ADC and NAD cartridges. Specs, compatibility, and current pricing.
• RSQ-31 — The ADC RSQ-31 is a forgotten ADC turntable known only through a replacement stylus listing (RSQ-34, CAD $32.97). No specs or reviews survive.
• RSQ-33 — The ADC RSQ-33 replacement stylus features a 0.3 x 0.7 mil elliptical diamond tip and 1.8–2.2g tracking force. Specs, history, and market price.
• RSQ-34 — The ADC RSQ-34 replacement stylus delivers finer detail and harmonically complete sound with an elliptical diamond tip. Specs, pricing, and compatibility.
• RSQ-36 — The ADC RSQ-36 stylus (discontinued) features a special elliptical diamond tip (.0003 x .0007-inch) and titanium-bonded cantilever. Specs, history, and value.
• RSQ32 — The ADC RSQ32 is a replacement stylus for the QLM-32 MK-III cartridge, featuring a special elliptical diamond tip and aluminum cantilever.
• RSQ33 MKII — The ADC RSQ33 MKII replacement stylus (£49.99) fits multiple ADC cartridges and protects records from damage. Specs, compatibility, and buying advice.
• VLM — The ADC VLM is a mid-tier moving magnet cartridge from the 1970s–80s that delivers high-end performance with a replaceable elliptical stylus and enduring analog warmth.
• VLM MK II — The ADC VLM MK II is a moving iron phono cartridge with 0.3 x 0.7 mil elliptical stylus, designed as second only to the XLM in ADC's lineup.
• VLM MK III — The ADC VLM MK III (1978–1984) is a Swiss-made moving iron phono cartridge with nude elliptical stylus, designed as a high-end ADC model just below the XLM.
• VLM mkI — The ADC VLM mkI (1977–1978) is a mid-tier moving magnet phono cartridge known for its warm sound and high compliance—now prized but fragile due to aging elastomers.
• XLM — The ADC XLM is a high-compliance moving magnet cartridge from the 1970s that delivers reference-level clarity with ultra-low tracking force.
• XLM-II — The ADC XLM-II moving magnet cartridge is a cult favorite for its low-mass tracking and high compliance. Specs, stylus pricing, and collector insights.
• XLM-MKIII — The ADC XLM-MKIII cartridge delivers legendary low-mass, high-compliance tracking with a special elliptical diamond stylus.
• XLM/III — The ADC XLM/III features a nude elliptical stylus and was a benchmark MM cartridge in its era. Specs, collectibility. Includes detailed specs.
• ZLM — The ADC ZLM is a high-compliance moving magnet cartridge from the late '70s, famed for its aliption stylus, low tracking force, and transparent sound.
• ZLM III — The ADC ZLM III was a high-end phono cartridge from the 1970s, prized for its Aliptic stylus and Induced Magnet design. With detailed specs.

None

• MK II — ADC MK II cartridges — Super XLM MK II at $125, 0.4g tracking, plus the 10/E Mk II. Period ads, measured specs, and what to check before buying.

Processors

• Sound Shaper III Paragraphic — A late 1970s paragraphic equalizer offering 12 selectable frequency bands per channel with inductor or IC circuitry options for precise room correction.

Speakers

• SS-1 — The ADC SS-1 is a no-frills, 10-band analog graphic EQ from the 1970s–80s, built for room correction and bass control with a rugged, repairable design.
• SS-1 MkII — The ADC SS-1 MkII is a no-nonsense 5-band graphic equalizer from the late '70s, prized for its transparency, build quality, and surgical tone control.
• SS-10 — The ADC SS-10 is a no-nonsense, 10-band passive equalizer from the 1980s—built tough, sounds clean, and perfect for precise tone shaping without gimmicks.
• SS-100SL — The ADC SS-100SL pairs a 10-band graphic EQ with a real-time FL spectrum analyzer—see your sound as you shape it. Find when it was made here.
• SS-110 — The ADC SS-110 is a 10-band stereo graphic equalizer from the late '70s with independent channel control and passive EQ design.
• SS-110 Mark I — The ADC SS-110 Mark I (1980–1985) is a 10-band stereo graphic equalizer with a built-in spectrum analyzer, prized for its visual drama and analog warmth—when the sliders still work.
• SS-110 Mark II — The ADC SS-110 Mark II is a 1970s 10-band graphic equalizer with a hypnotic analog spectrum analyzer—equal parts audio tool and visual spectacle.
• SS-115 — The ADC SS-115 is a no-frills 10-band analog EQ from the 1980s, prized for its surgical tone control and robust build—when recapped and cleaned.
• SS-115X — The 1986 ADC SS-115X is a 10-band analog graphic equalizer with ±15dB range, LED meters, and pro-grade build—capable, heavy, and ready for restoration.
• SS-117EX — ADC Sound Shaper SS-117EX equalizer with spatial expander, ca. 1986–88. Only known specs: , . Little else documented. With production dates.
• SS-215 — The ADC SS-215 is a 12-band stereo graphic equalizer from the 1970s–80s, built in the USA with ±15dB control, subsonic filter, and extensive I/O.
• SS-215X — The ADC SS-215X is a 12-band stereo graphic equalizer from Audio Dynamics Corporation, built for precision audio shaping with exceptional specs.
• SS-300 — The ADC SS-300 brings lab-grade room correction to vintage audio with a 10-band EQ, RTA display, and built-in pink noise—rare, visual, and still effective.
• SS-300SL — The ADC SS-300SL combines a 10-band graphic EQ with a real-time analyzer and pink noise calibration—rare analog room correction from 1988.
• SS-315 — A 1970s–90s stereo graphic EQ with built-in spectrum analyzer and pink noise — ambitious, distinctive, and a favorite among vintage audio tinkerers.
• SS-315X — The ADC SS-315X pairs a 10-band analog EQ with a fluorescent RTA display, offering vintage room correction with cult appeal—and a finicky microphone.
• SS-325 — The ADC SS-325 brought professional-grade room analysis to home audio with its glowing fluorescent EQ and built-in pink noise—rare, useful.
• SS-33 — A 1980 ADC SS-33 10-band graphic equalizer with fluorescent display—simple, effective, and still useful for analog room correction.
• SS-412X — The ADC SS-412X blends 10-band EQ with a 156-segment fluorescent spectrum display, making it a rare diagnostic tool for vintage audiophiles.
• SS-420 — The ADC SS-420 is a no-nonsense 10-band graphic equalizer from the late 1980s—built tough, sounds clean, and perfect for audiophiles who hate flashing lights.
• SS-425 — The ADC SS-425 combines a 10-band analog EQ with a real-time spectrum analyzer and pink noise generator—rare tech for a 1980s consumer unit.
• SS-425X — The ADC SS-425X is a 1980s analog EQ with real-time spectrum analysis, parametric control, and a cult following among vintage audio enthusiasts.
• SS-450X — The ADC SS-450X is a rare late-1980s flagship EQ with a 30-band spectrum analyzer, built-in reverb, and neon display—equal parts audio tool and visual spectacle.
• SS-525X — The ADC SS-525X (1980s) brought automated room correction to audiophiles with a microprocessor, 12 motorized sliders. With when it was made.
• SS-Two — The ADC SS-Two is a 12-band graphic equalizer from the 1970s–80s prized for its transparency, low distortion, and VU meters—ideal for precise tonal correction in vintage hi-fi systems.
• SS-Two IC — The ADC SS-Two IC is a 12-band analog graphic equalizer from the 1980s known for clean sound, reliable build, and functional VU meters—still effective in vintage audio chains today.

Turntables

• 18 — ADC 18 two-way speaker system by Audio Dynamics Corporation, 1962–1965. Walnut cabinet with rectangular woofer. Praised by High Fidelity and Electronics World for clean, natural response and excellent…

Unknown

• 10E — ADC 10E Mk.IV phono cartridge (1972) — 0.7g tracking force, whisper-light cantilever, 3.6 mV output. A legendary but lightly documented high-end moving-magnet design from ADC.
• 10E-MK — ADC 10E-MK phono cartridge (1972). Ultra-light 0.7-gram tracking force, whisper-light cantilever, 3.6 mV output. Best known as the Mk.IV variant.
• 117EX — ADC Sound Shaper SS-117EX graphic equalizer with spatial expander, documented only in a 1986 Audio magazine advertisement. Little else is known.
• 1200 — ADC 1200 audio tape deck from late 1960s/early 1970s; little documented beyond an ad claiming professional-quality under $300; also a modem of same name exists.
• 1700DD — ADC 1700DD semi-automatic quartz-lock direct-drive turntable. Specs from Audio (Dec 1979): wow/flutter under 0.03% WRMS, rumble –70 dB DIN B, price $279.95.
• 210 — ADC 210, compact two-way speaker from 1969–1970. Little documented beyond a period ad promising $100 quality at a lower price and a trade report noting low distortion figures.
• 3025 — ADC Soundshaper 3025 three-piece speaker system (ca. 1990). A little-documented sub/sat model with measured in-room response of ±5 dB from 55 to 20,000 Hz.
• 303 — Little is documented about the ADC 303 speaker beyond period reviews. Known variants: 303A Brentwood ($95, 1964) and 303B ($80, 1972).
• 404-S — ADC 404-S compact receiver from 1970 — ADC's first receiver, 60W IHF at 4 ohms, all-silicon transistors, dual mic inputs, very uncommon.
• 450A — ADC 450A two-way speaker system from 1971, marketed as a high transparency design with a review in High Fidelity April 1971. Little else is documented.
• 550-XE — ADC 550-XE phono cartridge, little documented. Unconfirmed specs from a 1972 HiFI-Stereo roundup suggest a 10–20,000 Hz ±2 dB response, elliptical stylus.
• 600 — ADC 600 solid-state stereo receiver, 60 watts, $219, advertised 1966-1967. Little else documented. Find production years here.
• 660-XE — ADC 660-XE phono cartridge. Known from 1972 period directories: elliptical stylus, 2g tracking force, 10-20kHz ±2dB response. Little else documented.
• 990-XE — ADC 990-XE phono cartridge, early 1970s, elliptical stylus, 10-20,000 Hz ±2 dB, 2 g tracking force. Find production dates here.
• Accutrac 3500R — Accutrac 3500R — little-documented variant of the computerized Accutrac +6 / model 3500 turntable with programmable track selection and Accuglide spindle.
• C-90 — ADC C-90 blank audio cassette tape from the early 1980s. Little documented beyond period retail listings and pricing. Includes when it was made.

Other Models

• 10 — The ADC-10 is a high-compliance induced magnet phono cartridge from the 1960s–70s, prized for its low tracking force and surgical clarity—when paired with the right tonearm.
• 10/E Mk II — ADC 10/E Mk II induced-magnet phono cartridge, $59.50, 35 compliance, tracks from 0.5g — a record-gentle classic with a fussy setup.
• 10E Mk.IV — The ADC 10E Mk.IV (1972) is a low-mass, induced magnet cartridge prized for its 0.7g tracking and transparent sound—if your tonearm can handle it.
• 16 — ADC 16 loudspeaker, introduced late 1962 by Audio Dynamics Corp. with the ADC-14 and ADC-18. Known from period launch ads; woofer 16x12 in. Record is thin.
• 16/2R — ADC 16/2R CD player (1986–1987): $369.95, 16-track programming, three-beam laser, metal chassis; documented in period press with lab tests.
• 26 — The ADC 26 is a rare 1970s induced-magnet cartridge that delivers uncanny soundstage depth and musical realism when paired with the right tonearm.
• 27 — The ADC 27 is a 1960s moving magnet phono cartridge with a 0.3 x 0.7 mil elliptical stylus, 40cu compliance, and 6.25 g weight.
• 30 — The ADC QLM 30 was a no-frills moving magnet cartridge that brought warm, forgiving sound to 1970s department store turntables.
• 30 III — ADC QLM 30 MkIII: a heavy-tracking moving magnet cartridge with 0.7 mil spherical stylus and 3.5 mV output, built for budget changers. Value and stylus info.
• 30 MK III (c. 1970s–1980s) — The ADC QLM 30 MK III (c. 1970s–1980s) is a rugged moving magnet cartridge built for budget changers. Specs, tracking force, stylus tips, and real market prices.
• 30 MkII (1970s–1980s) — The ADC QLM 30 MkII was the unsung workhorse cartridge in countless vintage turntables—replaceable, reliable, and just good enough to keep the music playing.
• 303A — The ADC 303A delivers deep, tight bass from a sealed cabinet, powered by a 10-inch alnico woofer — a durable, under-the-radar classic from the 1960s.
• 303AX (1970) — ADC 303AX: a $99.95 sealed two-way bookshelf with a 10-inch woofer and a Consumer Reports Best Buy check rating — but its Mylar tweeter is today's failure point.
• 32 — The ADC QLM 32 MkIII (1978–1984) brought warm, smooth elliptical tracking to budget turntables, powering countless European hi-fi systems.
• 32 II — The ADC QLM 32 MkIII is a late-'70s moving magnet cartridge known for warm, smooth sound and compatibility with higher-mass tonearms.
• 32 Mk. II (circa 1978–1984) — The ADC QLM 32 Mk. II (circa 1978–1984) is a 5.75g moving iron cartridge with elliptical stylus and 2.0–4.0g tracking force. Specs, pricing, and buying advice.
• 33 — The ADC QLM-33 MKIII phono cartridge delivers detailed, harmonically rich sound via its special elliptical diamond stylus — still serviceable with modern replacements.
• 33 MkIII (Mid-1970s–Early 1980s) — The ADC QLM 33 MkIII is a mid-tier vintage phono cartridge with a 0.4 x 0.7 mil elliptical stylus and 4.0 mV output — a budget-friendly OEM upgrade for 1970s turntables.
• 34 — The ADC QLM 34 MkIII (1978–1984) is a moving magnet phono cartridge known for warm vintage sound, elliptical nude stylus, and Omni-Pivot tracking.
• 34 III — The ADC QLM 34 MkIII (1978–1984) is a warm-sounding moving magnet cartridge with a 0.3x0.7 mil elliptical stylus. Specs, history.
• 34 Mk. III (1978–1984) — The ADC QLM 34 Mk. III (1978–1984) is a German-made moving iron phono cartridge with elliptical stylus, 5.75g weight, and 99 DM original price.
• 36 II — The ADC 36 II is an undocumented vintage phono cartridge from ADC's RQ/RSQ family. No confirmed specs, years, or reviews survive.
• 36 Mk III — The ADC QLM 36 Mk III is a cartridge whose documentation is a minefield — its indexed manual excerpts describe an S-100 computer board, not a phono cartridge.
• 36 Mk. II — The ADC QLM 36 Mk. II (1975–1978) is a precise German moving iron phono cartridge with 5.75g weight and elliptical stylus. Specs, history, and collector value.
• 606 — ADC 606: a little-documented 90-watt solid-state FM stereo receiver from the late 1960s, known mainly from its own period advertising.
• 660 — The ADC 660 stethoscope (current) is a lightweight, diaphragm-only nurse's scope with 50% enhanced acoustics. Specs, pricing, and real-world use.
• 660E — The ADC 660E is a rare 1960s moving magnet phono cartridge with an elliptical diamond stylus and 15° tracking angle. Original price: £13 18 6 (A).
• 670 — The ADC 670 Proscope is a 3 oz. lightweight, latex-free dual-head stethoscope with a combination chestpiece and 50% enhanced acoustic response.
• 675 — The ADC 675 Pediatric Stethoscope weighs 2.6 oz and features a 1.4-inch diaphragm, 1-inch bell, and gasket-sealed chestpiece.
• 676 — The ADC 676 is a modern infant stethoscope — not vintage audio. Find specs, pricing, and why this model isn’t the gear you expected.
• 770 — The ADC 770 phono cartridge replaced the Point 4/E as ADC's flagship. Grain-oriented diamond stylus, $50–$89 on today's market. Specs? Unknown.
• 809 — The ADC 809N is a black enamel aneroid gauge for pocket sphygmomanometers — not vintage audio, but built to last with a 10-year warranty.
• Accutrac — The ADC Accutrac 4000 (1976) was a direct-drive turntable with infrared remote and electro-optical track sensing—the thinking turntable of the 1970s.
• Accutrac 4000 — The ADC Accutrac 4000 was a 1970s marvel: a direct-drive turntable with infrared track selection, programmable memory, and a remote that felt like sci-fi.
• Accutrac 6 — The ADC Accutrac +6 was a 1970s marvel: a six-record changer with programmable track selection and infrared remote control.
• ADC1700 — ADC 1700DD semi-automatic quartz-lock direct-drive turntable from 1979. Known from a single Audio review; thinly documented otherwise.
• Allround K-8 — The ADC Allround K-8 is a replacement stylus for the ADC K8E cartridge, known for its nude elliptical diamond and airy high-end response.
• ALT-1 — The ADC ALT-1 is a low-mass, detachable-headshell tonearm from the early '80s that delivers LMF-series precision at a fraction of the cost—ideal for high-compliance cartridges.
• AR-303a — The ADC AR-303a delivers deep, clean acoustic suspension bass in a refined 1995 flagship—warm, honest, and demanding of careful setup.
• Astrion — The ADC Astrion (1981–1984) is a hand-built IM cartridge with a sapphire cantilever and hyperelliptical stylus, prized for its neutrality and rarity.
• CFX-1 — The ADC CFX-1 stylus features a special elliptical diamond tip (.0003 x .0007-inch) on an aluminum cantilever. Still available for $36.95 — does it deliver natural vinyl playback?
• CFX-2 — The ADC CFX-2 cartridge features a special elliptical diamond stylus (.0003 x .0007-inch) and aluminum cantilever. Sound quality praised for detail and vocal clarity. Specs & pricing.
• Digital Series — ADC Digital Series II, III, IV cartridges—high-compliance MM designs built for the era of digitally mastered LPs, with upgradeable styli and a cult following among analog purists.
• Digital Series IV — The ADC Digital Series IV RS IV stylus delivers precision audio with a nude micro-ellipse diamond tip, 1.2g tracking, and 15Hz-25kHz response.
• G-U — The ADC G-U stereo phono cartridge delivers 6.1 mV output and ultra-fine 0.0003-inch x 0.0007-inch stylus tracking. Specs, value, and replacement info.
• HS-4A — ADC HS-4A — a power-supply heatsink (part 141563-1) documented only in a Marantz-attributed service manual excerpt for the XLS3 platform. No retail specs, years, or reviews exist in available sources.
• I — The ADC Integra XLM I is a vintage integrated phono cartridge and carbon fiber headshell from the 1970s–80s, praised for its clean.
• II Improved — The ADC XLM II Improved uses a rare induced magnet design with a low-mass cantilever and Diasa stylus. Specs, setup tips, and real market prices.
• III PRO — The ADC XLM MK III (1978–1984) is a high-compliance moving magnet cartridge known for low mass, precision tracking, and nuanced sound—beloved by analog enthusiasts.
• Improved — The ADC XLM Improved MKII (1980) was a high-compliance MM cartridge rivaling the Shure V15. Specs, sound, and current market prices.
• IMPROVED MKII — The ADC XLM IMPROVED MKII is a high-performance replacement stylus for vintage ADC cartridges, featuring a nude elliptical diamond tip and precise tracking specs.
• Integra — The ADC Integra XLM II (1981–1984) combines a carbon fiber headshell with the XLM II cartridge for ultra-low mass and unmatched tracking accuracy.
• Integra ST XLM II — The ADC Integra ST XLM II pairs a carbon fiber headshell with a precision cartridge for near-zero tracking error. Specs, setup tips, and collector value.
• Integra XLM I — The ADC Integra XLM I is a unified carbon fiber phono cartridge and headshell, reducing mass by up to 50% for precision tracking.
• Integra XLM II — The ADC Integra XLM II is a vintage high-end phono cartridge with integrated carbon fiber headshell, known for its precision, adjustability.
• Integra XLM III — The ADC Integra XLM III is a high-compliance MM cartridge in a precision integrated headshell, revered for its 3D soundstage and low-mass tracking.
• LM — The ADC LM isn't one thing—it's a family of low-mass tonearms (LMF-1/LMF-2) and high-compliance cartridges (LM-100 MKIII). Specs, sound, and collector reality.
• LM-100 MKIII — The ADC LM-100 MKIII cartridge features a special elliptical diamond stylus and aluminum cantilever, praised for detailed, full-bodied sound.
• LMA-1 — The ADC LMA-1 was the factory cartridge for the Accutrac 4000 turntable—a smooth, reliable MM design prized for its musicality and ease of use.
• LMA-3 — The ADC LMA-3 was the optical-sensing cartridge at the heart of the futuristic Accutrac 4000 turntable, blending analog audio with infrared tracking.
• LMF — The ADC LMF-1 and LMF-2 carbon-fiber tonearms deliver low-mass precision and neutral sound at a fraction of the cost of vintage rivals like SME or Grace.
• LMF-1 — The ADC LMF-1 is a low-mass carbon fiber tonearm from 1978–1984, prized for its rigidity, neutrality, and exceptional value among vintage analog enthusiasts.
• LMF-2 (Late 1970s) — The ADC LMF-2 is a low-mass carbon fiber tonearm from the late 1970s with a removable headshell and viscous cueing — quiet value among vintage arms.
• LX-I — The ADC LX-I cartridge lives on through its $69.35 replacement stylus — a nude Schwarz elliptical diamond keeps this forgotten analog gem playing.
• LX-II — The ADC LX-II (late 70s?) is a no-frills black phono cartridge with a precision elliptical stylus. Specs, tracking force notes, and current stylus pricing.
• LX-III — The ADC LX-III cartridge lives on through its $73 replacement stylus—a rare win for owners of this 40-year-old phono relic.
• MK I — The ADC XLM MK I is a rare, discontinued moving iron cartridge once rivaling the Shure V15. Collectors seek it despite suspension issues and scarce styli.
• MK III (1978–1984) — ADC XLM MK III (1978–1984): £40 moving magnet with nude elliptical tip, 0.75–1.5g tracking, and a reputation for spatial depth.
• MK X — The ADC MK X remains a mystery — no specs or history found. Replacement styli exist, hinting at its past production.
• MKII (Late 1970s) — The ADC XLM MKII is a high-compliance moving magnet cartridge from the late 1970s with a 650-ohm coil and nude elliptical stylus, prized for musical flow when properly matched.
• MkII Improved — The ADC XLM MkII Improved is a high-compliance moving magnet cartridge from the 1970s that delivers neutral, three-dimensional sound with exceptional detail and low tracking force.
• mkIII Improved — The ADC XLM mkIII Improved delivers 6.05mV output and a warm, spacious sound—rare today, but still outperforms modern cartridges under £500.
• P — The ADC P — a rumored phono cartridge with no specs, no history, and no proof it existed. Is it real or a vintage audio myth?
• P30 — The ADC P30 (1975–1978) is a Japanese-made MM phono cartridge with 5.75g weight, 5.5mV output, and conical 0.7 mil stylus, designed for record changers.
• P32 — The ADC P32 (1975–1978) is a moving iron phono cartridge with 5.5 mV output and elliptical stylus. Specs, value, and replacement stylus info.
• P36 — The ADC P36 is a basic vintage phono cartridge from a legendary brand — functional, serviceable, and still usable today. Original styli available.
• PSX-10 — The ADC PSX-10 P-mount cartridge delivers high-compliance tracking and warm clarity, a cult favorite for vintage turntable upgrades.
• PSX-20 — The ADC PSX-20 brought high compliance and dual-mount flexibility to mid-tier turntables, but its legacy is fading with the scarcity of its red RPSX-20 stylus.
• PSX-30 — The ADC PSX-30 brought high-end Induced Magnet performance to p-mount turntables, offering exceptional detail and tracking in a plug-and-play design.
• PSX-40 — The ADC PSX-40 is a high-compliance moving magnet cartridge from the 1970s that delivers smooth, natural sound with excellent groove tracking and low record wear.
• Q 3 — ADC Q 3 compact two-way acoustic suspension bookshelf speakers, 60W handling, 89 dB sensitivity, polycarbonate dome tweeter, 12 lbs each.
• Q30 — The ADC Q30 is a vintage MM phono cartridge with 30 µm/mN compliance and a conical stylus—rare, affordable, and still viable for analog enthusiasts.
• Q36 — The ADC Q36 (1972–1973) is a reliable MM cartridge with elliptical diamond stylus, pale blue guard, and stable tracking.
• QLN-II — The ADC QLN-II phono cartridge delivers 5.5 mV output and a bright, detailed sound. Specs, compatibility notes, and current pricing for collectors.
• QLX-3 — The ADC QLX-3 phono cartridge delivers precise groove tracing with a special elliptical diamond stylus, though little else is documented about its history or specs.
• R660 — The ADC R660 replacement stylus (bonded diamond conical, 1.8g) keeps ADC 660, 770, 809, and Point-4 cartridges playing. Compatibility and pricing.
• RLMA-1 — The ADC RLMA-1 elliptical nude diamond stylus brought high-fidelity tracking to mid-tier turntables—but today, it's a rare and critical find for vintage analog restoration.
• RLMA-3 — The ADC RLMA-3 elliptical nude diamond stylus delivered high compliance and low tracking force for the LMA-3 cartridge—detail-rich but unforgiving.
• RLX-II — The ADC RLX-II stylus ($73) is a special elliptical diamond replacement for the ADC LX-II cartridge. Specs, compatibility, and market details.
• RLX-III — The ADC RLX-III stylus ($73) features a special elliptical diamond tip for the rare ADC LX-III cartridge. Specs, compatibility, and real-world performance.
• RP 32 — The ADC RP 32 (SD) stylus by Jico keeps the ADC P 32 cartridge alive—diamond-tipped, elliptical, and essential. Specs, price, and availability.
• RP30 — The ADC RP30 is a genuine OEM replacement stylus for the P30 cartridge—critical, scarce, and still delivering ruler-flat response.
• RQ-3 — The ADC RQ-3 replacement stylus (conical diamond, 7 mil) keeps vintage ADC Q-3/Q-4 cartridges playing true. Specs, value, and where to find NOS.
• RQ-4 — The ADC RQ-4 stylus (–) features a conical diamond tip built for longevity and solid sound. Specs, value, and where to find replacements.
• RQ-40 — The ADC RQ-40 is a vintage stylus with a polished diamond tip, sold today as replacement part ADC178 for $28.95. What cartridge did it belong to?
• RQ30 — The ADC RQ30 elliptical stylus (£44.99) replaces the Q30 cartridge tip with bonded diamond precision. Track hidden groove details—before spares vanish.
• RQ36 — The ADC RQ36 Stylus (for Q36 cartridge) features an elliptical bonded diamond tip for precise vinyl tracking. Price, specs, and why spares are essential.
• RQLM-32 — The ADC RQLM-32 is a replacement stylus for the QLM-32/Ⅱ cartridge, featuring a Duen needle and 1.0–2.0g tracking force.
• RQLM30 — The ADC RQLM30 stylus (–) features a conical diamond tip for reliable vinyl playback. Specs, compatibility, and current pricing for this vintage replacement needle.
• RQLM36 — The ADC RQLM36 stylus features a special elliptical diamond (.0003 x .0007-inch) and aluminum cantilever. Specs, compatibility, and current pricing.
• RS/3 (RS III) — The ADC RS/3 (RS III) is a diamond-tipped replacement stylus for the ADC DIGITAL Series III cartridge, compatible with mono and stereo records at 33 or 45rpm.
• RSV — The ADC RSV stylus (c. ????) claims to mirror the original cutting lathe for ruler-flat response. Genuine OEM tip for VLM MK III. Specs, pricing, compatibility.
• RSX — The ADC RSX is a precision elliptical replacement stylus for the XLM-MKIII cartridge, known for accurate tracking and long life.
• RSX-5 — The ADC RSX-5 stylus (conical diamond, 0.7 mil) keeps the SX-5 cartridge playing with precision and polish. Specs, compatibility, and current pricing.
• RSZ — The ADC RSZ stylus (for ZLM cartridge) features a rare Aliptic semi-Shibata diamond tip. Specs, replacement options, and collector pricing.
• RVL — The ADC RVL stylus features a special elliptical diamond tip (.0003 x .0007-inch) for the VLM cartridge—detailed, clear, and harmonically rich.
• RXL — The ADC RXL is a replacement elliptical diamond stylus for the ADC XLM MK II phono cartridge, known for clarity and precision in vintage vinyl playback.
• RXM-II — The ADC RXM-II stylus features a nude special elliptical diamond for exceptional groove tracing and rich analog detail. Covers detailed specs.
• RXM-III — The ADC RXM-III stylus features a nude special elliptical diamond tip (.0003 x .0007-inch) for precise groove tracing. Current replacement price: $73.
• RZL — The ADC RZL stylus (OBSOLETE) features a Vivid Line Contact tip with 6/75 µm radii for high-resolution vinyl playback. Includes full specifications.
• SA-1 — The ADC SA-1 is a 1980s real-time spectrum analyzer with 120 LEDs, built-in pink noise, and a matched mic — a rare tool for tuning vintage audio systems.
• SA-1 Real Time Analyzer — The ADC SA-1 Real Time Analyzer turns sound into a hypnotic LED display, offering vintage room tuning with serious caveats about mic quality and calibration.
• series — The ADC XLM series (1970s?) is a legendary MM phono cartridge that rivaled the Shure V15. Specs, sound, and collector pricing for the MK III and variants.
• Series IV — The ADC Series IV cartridge delivers precision audio with a Nude Micro Ellipse stylus, Omni-Pivot design, and exceptional channel balance.
• shaper-two-ic — A 12-band stereo frequency equalizer made in Taiwan, featuring red LED sliders and channel meters. With full specifications and production years.
• SLM-100 — The ADC SLM-100 Audio Dynamics Sound Level Meter helps tune your hi-fi system and room. Specs, repair options, and current market prices.
• Sound Shaper — The ADC Sound Shaper series brought pro-level EQ control to living rooms in the 70s and 80s—inductor-based models are still prized for their clarity and build.
• Sound Shaper 100SL — The ADC Sound Shaper 100SL combines a 31-band stereo EQ with a hypnotic FL spectrum display—precision audio shaping with vintage flair.
• Sound Shaper 110 mk2 — The ADC Sound Shaper SS-110 MKII is a vintage stereo graphic equalizer with illuminated sliders and basic monitoring controls.
• Sound Shaper 110 MKII — The ADC Sound Shaper 110 MKII is a 2x12-band stereo graphic equalizer with LED meters — collectible, and scarce in the surviving record.
• Sound Shaper 303 — The ADC Sound Shaper 303 brought real-time room correction to living rooms with its glowing fluorescent display and built-in pink noise—quirky, fragile.
• Sound Shaper 315 — The ADC Sound Shaper 315 brought pro-grade room correction to living rooms in the '80s — with real-time analysis, built-in mic, and a dedicated cult following.
• Sound Shaper One — The ADC Sound Shaper One is a vintage 5-band inductor-based graphic equalizer known for its warm, musical tone shaping and rugged build.
• Sound Shaper One Ten — The ADC Sound Shaper One Ten packs inductors and discrete transistors into a budget 10-band EQ—raw, tweakable, and surprisingly cult-favorite among vintage audio tinkerers.
• Sound Shaper One-IC — The ADC Sound Shaper One-IC is a no-frills 10-band graphic EQ from the 1980s that delivers clean tone shaping without noise or coloration.
• Sound Shaper SA-1 — The ADC Sound Shaper SA-1 turns sound into light with 120 LEDs, offering vintage audiophiles a rare real-time window into room acoustics and system response.
• Sound Shaper SS-1 — The ADC Sound Shaper SS-1 is a no-frills 10-band graphic EQ from the 1970s that delivers surgical tone control with pro-grade build and zero digital fuss.
• Sound Shaper SS-10 — The ADC Sound Shaper SS-10 brought real-time spectrum analysis to the living room, letting audiophiles see—and shape—their sound with neon-lit precision.
• Sound Shaper SS-100SL — The ADC Sound Shaper SS-100SL pairs a 10+10 band graphic EQ with a responsive fluorescent RTA display—rare vintage gear that’s both useful and hypnotic.
• Sound Shaper SS-110 — The ADC Sound Shaper SS-110 is a rugged, discrete-circuit 10-band graphic EQ from the 1970s that delivers honest tone shaping with surprising clarity.
• Sound Shaper SS-110 Mark II — The ADC Sound Shaper SS-110 Mark II (1980–1983) is a 10-band stereo graphic equalizer with real-time spectrum analyzer—rare analog precision for room correction.
• Sound Shaper SS-115 — The ADC Sound Shaper SS-115 is a 1980s analog graphic equalizer with ±15dB of cut/boost per band, known for its warm signal path and iconic illuminated sliders.
• Sound Shaper SS-115X — The ADC Sound Shaper SS-115X is a 10-band analog graphic equalizer from the 1980s, prized for its ±15dB range, illuminated sliders, and discrete circuitry.
• Sound Shaper SS-2 — The ADC Sound Shaper SS-2 is a 12-band stereo graphic EQ known for its clean signal path, inductor-based filters, and professional build quality.
• Sound Shaper SS-2-IC — The ADC Sound Shaper SS-2-IC (1982–1988) delivers surgical 12-band EQ with exceptional transparency—beloved for accuracy, but watch for aging sliders.
• Sound Shaper SS-215 — The ADC Sound Shaper SS-215 is a no-nonsense, transparent 12-band graphic EQ prized for its clean signal path and reliable performance in vintage audio systems.
• Sound Shaper SS-215X — The ADC Sound Shaper SS-215X (1980–1989) blends 12-band analog EQ precision with striking 80s industrial design and class-A warmth.
• Sound Shaper SS-3 — The ADC Sound Shaper SS-3 is a 12-band analog graphic equalizer from the late '70s that delivers surgical tone control with surprising transparency.
• Sound Shaper SS-3-IC — The ADC Sound Shaper SS-3-IC (1983) is a 12-band analog EQ with IC-based circuitry and fluorescent display—precise, rare, and unforgiving if neglected.
• Sound Shaper SS-30 — The ADC Sound Shaper SS-30 is a 1980s 10-band graphic EQ with a glowing fluorescent spectrum display—beloved for its tactile control and analog warmth.
• Sound Shaper SS-300SL — The ADC Sound Shaper SS-300SL pairs a 10-band passive EQ with a hypnotic LED spectrum display, blending precision and retro charm in a 1980s classic.
• Sound Shaper SS-315 — The ADC Sound Shaper SS-315 pairs a 10-band analog EQ with a real-time spectrum analyzer, making it a tactile, visual tool for shaping sound in 1980s high-fidelity systems.
• Sound Shaper SS-315X — The ADC Sound Shaper SS-315X pairs a 10-band EQ with a 110-segment fluorescent spectrum analyzer, turning room acoustics into visible light.
• Sound Shaper SS-325 — The ADC Sound Shaper SS-325 combines a 12-band EQ, real-time analyzer, and pink noise generator in one vintage unit for precise room tuning.
• Sound Shaper SS-325X — The ADC Sound Shaper SS-325X combines a 12-band EQ, real-time analyzer, and calibrated mic for precise room tuning — a rare analog command center from the 1980s.
• Sound Shaper SS-33 — The ADC Sound Shaper SS-33 is a 10-band analog EQ from the 1980s with a glowing fluorescent meter and surgical tone control—beloved by tweakers.
• Sound Shaper SS-412X — The ADC Sound Shaper SS-412X pairs a 10-band EQ with a hypnotic 12-band fluorescent spectrum analyzer — a rare, precise tool for taming room acoustics.
• Sound Shaper SS-415X — The ADC Sound Shaper SS-415X is a 1980s 12-band analog EQ with real-time spectrum display and memory preset—prized for its hands-on tuning and retro-futuristic glow.
• Sound Shaper SS-425X — The ADC Sound Shaper SS-425X (1980–1989) blends analog EQ with mesmerizing LED spectrum displays—a vintage audio icon prized as much for its looks as its sound.
• Sound Shaper SS-520 — The ADC Sound Shaper SS-520 combines a 12-band analog EQ with a microprocessor-controlled analyzer and pink noise generator — a bold 1980s attempt at automated room correction.
• Sound Shaper SS-525X — The ADC Sound Shaper SS-525X (1986–1991) combined a 12-band EQ, real-time analyzer, and auto-correction with a calibrated mic—rare tech for its time.
• Sound Shaper Ten SS-10 — The ADC Sound Shaper Ten SS-10 is a no-nonsense 10-band analog EQ from the 1980s that delivers surgical tone control without sacrificing clarity or dynamics.
• Sound Shaper Thirty — The ADC Sound Shaper Thirty (SS-30) pairs a 10-band graphic EQ with a mesmerizing fluorescent spectrum analyzer, making it a diagnostic tool as much as a tone shaper.
• Sound Shaper Thirty Three — The ADC Sound Shaper Thirty Three combines a 10-band graphic EQ with a real-time fluorescent spectrum analyzer and built-in pink noise—making room correction tactile and visual.
• Sound Shaper Three — The ADC Sound Shaper Three is a 12-band paragraphic equalizer with real-time analyzer, fluorescent display, and pink noise generator—built for sonic precision in the 1980s.
• Sound Shaper Twenty — The ADC Sound Shaper Twenty (1979–1985) is a 12-band stereo graphic equalizer prized for its clean signal path, broadcast-grade build.
• Sound Shaper Two — The ADC Sound Shaper Two is a 12-band stereo graphic equalizer prized for its transparency, build quality, and rare mic input for room correction.
• Sound Shaper Two IC — The ADC Sound Shaper Two IC is a 12-band vintage EQ prized for its transparency, build quality, and surgical tone shaping without coloration.
• Sound Shaper Two MKII — The ADC Sound Shaper Two MKII is a 12-band graphic equalizer prized for its transparency, build quality, and surgical tonal control in vintage hi-fi systems.
• Sound Shaper Two MKIII — The ADC Sound Shaper Two MKIII is a 12-band graphic equalizer from the 1980s prized for its transparency, build quality, and surgical tone control.
• SRX — The ADC SRX-I is a replacement stylus with no known specs or production dates—still available, barely documented.
• Super XLM — The ADC Super XLM MKII (1976–1978) was a rare 4-channel phono cartridge built for quadraphonic vinyl. Specs, history, and real collector prices.
• Super XLM Mk. II — The ADC Super XLM Mk. II (1976–1978) is a rare 4-channel pickup with 15–50,000 Hz response. A forgotten artifact of quadraphonic vinyl.
• SX-5 — The ADC SX-5 phono cartridge (unknown year) uses a 0.7 mil conical diamond stylus for 16, 33, and 45 rpm playback. Specs, value, and replacement info.
• SX-5E — The ADC SX-5E is a T4P MM cartridge with 1.8–2.2g tracking force and elliptical stylus option. Specs, replacement costs, and market value.
• TRX-2 — The ADC TRX-2 is a rare, late-80s moving magnet cartridge with a sapphire cantilever, revered for its neutrality and detail—built just before ADC vanished.
• XL-40 — The ADC XL-40 phono cartridge lives on only through its replacement stylus, offering a faint echo of a forgotten analog era.
• XLX — The ADC XLX was a high-compliance MM cartridge from the 1970s that excelled on low-mass arms, prized for its delicate tracking and organic midrange.
• XML — The ADC XLM was a low-mass, high-compliance moving magnet cartridge that delivered exceptional tracking and value in the 1980s–90s.
• Z200S — The ADC Z200S is a replacement cartridge stylus with no surviving specs or history—known today only through aftermarket parts listings.