Accuphase
When Kenwood's best engineers decided good enough wasn't
History
Accuphase Laboratory, Inc. was founded in Yokohama, Japan in 1972 by a group of engineers led by Jiro Kasuga who had previously worked at Kenwood (then Trio-Kenwood). Dissatisfied with the direction of mass-market audio, these engineers set out to create the ultimate high-fidelity components without compromise.
The company name combines "Accu" (accurate) with "phase" (referring to audio phase integrity)—reflecting their commitment to accurate sound reproduction. From the beginning, Accuphase adopted a distinctive champagne-gold finish and heavy construction that set their products apart visually.
The E-202 (1973), Accuphase's first integrated amplifier, established the template for all future products: massive power supplies, Class A operation, discrete circuitry, and exceptional build quality. The amplifier featured the dual-mono construction and precision attenuator that would become Accuphase trademarks.
Throughout the 1970s and 1980s, Accuphase expanded their lineup to include preamplifiers, power amplifiers, tuners, and ultimately digital sources. The P-300/C-200 pre/power combination and T-100 tuner became reference standards in Japanese high-end audio.
The company maintained its independence and refused to compromise on quality even as the audio industry shifted toward lower-cost manufacturing. Accuphase remains a family-owned business producing exclusively in Japan with a obsessive focus on quality control.
Key Facts
Founded 1972, Yokohama, Japan. Founder Jiro Kasuga (ex-Kenwood). Philosophy No-compromise high fidelity. Distinctive Feature Champagne-gold finish. Manufacturing 100% Japan, in-house production. Current Status Independent, family-owned.
Legendary Products
Accuphase E-202 (1973) The first Accuphase integrated amplifier and the template for everything that followed. The E-202 delivered 50 watts per channel of pure Class A power with dual-mono construction and a precision stepped attenuator. It established the champagne-gold aesthetic.
Accuphase P-300 / C-200 (1970s) Flagship separates that represented the state-of-the-art in solid-state amplification. The P-300 power amplifier delivered 150 watts per channel with massive current capability, while the C-200 preamplifier offered reference-quality phono stages.
Accuphase T-100 / T-101 (1970s) Reference-quality FM tuners with exceptional sensitivity and selectivity. The T-100 featured discrete circuitry throughout and became a benchmark for analog FM reception.
Accuphase E-305 (1980s) A refined integrated amplifier that improved upon the E-202 formula with better power supplies, improved Class A circuitry, and the legendary build quality that defines Accuphase.
Sound Signature
Accuphase components have a sonic character that audiophiles describe as "liquid precision" — an unusual combination of analytical transparency and musical ease. The Class A circuitry delivers a midrange that is extraordinarily pure, free of the grain or glare that can afflict lesser solid-state designs. Vocals float in space with a naturalness that approaches the best tube equipment, yet there is none of the softness or frequency-response deviation that tubes can introduce. Every instrument occupies its own clearly defined position in the soundstage.
The bass performance is where Accuphase's massive power supplies and over-engineered construction really show their worth. Low frequencies arrive with authority and control — deep, taut, and dynamic without ever becoming bloated. The treble extends effortlessly, offering the kind of air and shimmer around cymbals and strings that reveals micro-details in familiar recordings. What ties it all together is a sense of effortless reserve: even at high volumes, Accuphase amplifiers sound composed and unflappable, as if they are barely working.
Compared to their closest rival Luxman, Accuphase tends toward a slightly more analytical, precise presentation — less warmth, more resolution. Neither approach is superior; they are two expressions of Japanese high-end philosophy, and many collectors eventually own both.
Collecting Accuphase
Accuphase is one of the few vintage audio brands where prices have consistently appreciated over decades. The original E-202 integrated amplifier, which sold for around $600 in 1973, now commands $1,500 to $3,000 depending on condition. The P-300/C-200 separates are even more prized, with clean pairs reaching $4,000 or more. The T-100 tuner is a sleeper — still undervalued relative to its performance, typically available for $800 to $1,500.
Because Accuphase was primarily sold in the Japanese domestic market, many vintage units found overseas were originally purchased by stationed military personnel or through grey-market importers. Units with original Japanese documentation and packaging carry a premium. The champagne-gold finish ages beautifully, but examine the faceplate closely for scratches — these are nearly impossible to refinish to factory standard. Internally, Accuphase build quality is so exceptional that many units from the 1970s still operate within specification with nothing more than a capacitor refresh.
Competitors & Comparisons
Accuphase vs Luxman: Both Japanese Class A; Accuphase more analytical. Accuphase vs McIntosh: Both luxury brands; different sonic philosophies. Accuphase vs Mark Levinson: Similar ultra-high-end positioning.
None
- DA-9601 — A high-resolution D/A converter from 1998 supporting 96kHz/24-bit digital audio with Accuphase’s proprietary MMB conversion method.
Amplifiers
- A-20V — Pure Class-A stereo power amplifier with dual-mono design and MOS-FET output stage, released in June 1995. This page has detailed specs.
- A-45 — Pure class A stereo power amplifier released in November 2006, featuring fully balanced signal paths and MCS+ topology. Find what it sells for today here.
- A-65 — Stereo power amplifier released in April 2009 with pure Class A operation and fully balanced signal transmission. Covers full specifications.
- AD-250 — A dedicated phono equalizer unit designed to enable analog record playback on the C-250 preamplifier. Covers detailed specs and period documentation.
- AD-275 — Accuphase AD-275 phono stage module for C-275 preamp, 0.8kg, 0.005% THD, sold 1995. A discrete, aluminum-shielded insert for vinyl purists.
- AD-290 — Accuphase AD-290 (1993) phono equalizer for C-290: 0.005% THD, dual MC impedance, ±0.2 dB RIAA. Precision-engineered add-on.
- B-6 — Power bridge network designed exclusively for use with specific Accuphase amplifiers, featuring DC-coupled NF loop and capacitor-free input/output.
- C-17 — MC head amplifier released in September 1984, designed to preserve the unique characteristics of moving coil cartridges.
- C-7 — MC head amplifier released in April 1979 with a fixed 100 Ω input impedance optimized for a wide range of MC cartridges.
- E-203 (1974) — Updated version of the E-202 from the mid-1970s. Retained the 50WPC Class A design with refined circuitry and improved reliability.
- E-211 (1998) — Accuphase E-211 (1998) integrated amplifier — 90W/ch, current-feedback topology, optional phono board. Specs and history for this Japanese classic.
- E-212 — Integrated stereo amplifier introduced in 1981 with current feedback topology, dual-mono design, and modular option board support
- E-213 — Integrated pre-main amplifier released in April 2005 with MCS circuitry and 115W/ch output into 4Ω. Includes original documentation and production years.
- E-280 — Accuphase's entry-level integrated amplifier with high-resolution solid-state performance and modular expandability. Covers full specifications.
- E-3000 — Accuphase E-3000 stereo preamplifier, known only from a 1979 HiFI-Stereo directory listing alongside the P-300 power amplifier.
- E-303 — High-end integrated stereo amplifier with MOSFET output and direct-coupled phono stages, released in December 1983. This page has full specifications.
- E-303X (1983–1987) — Accuphase E-303X integrated amplifier (1983–1987). 150 W/ch into 8Ω, triple push-pull MOS FET output, MC head amp with 3-step loading, ¥298,000 original price.
- E-305 (1987) — Accuphase E-305 (1987) integrated amplifier — 130W/ch, direct-coupled DC servo design, 20.5kg separates-grade vintage powerhouse.
- E-305V (1991–1993) — Accuphase E-305V (1991–1993) integrated amplifier — 130W/ch MOSFET design with balanced inputs, split pre/power sections, and the RC-8 remote. Specs and history.
- E-306 (1994) — Accuphase E-306 (1994) integrated amplifier — 100W/ch into 8Ω, current-feedback design, MM/MC phono, balanced inputs, ¥260,000 original.
- E-306V (1997–2001) — Accuphase E-306V (1997–2001): Japanese integrated amplifier with 140W/ch into 4Ω, 500 VA transformer, and modular rear-slot expansion.
- E-307 — A high-end pre-main amplifier refining the E-306V with discrete current feedback topology and independent pre/power sections.
- E-406 (1993) — Accuphase E-406 (1993) integrated amplifier — 170W/ch into 8Ω, 28kg, separate preamp/power amp transformers, ¥380,000 at release.
- E-406V (1996–2001) — Accuphase E-406V (1996–2001) — 170W/ch integrated amplifier with current feedback design, triple push-pull output, and optional AD-10 phono board.
- E-550 (2009) — The Accuphase E-550 (2009) is a 30W Class A integrated amplifier with AAVA 65,536-step volume control, 150W into 1 ohm, and legendary build quality.
- M-60 — Monoblock power amplifier introduced in July 1975 with 450W into 4Ω and a reputation for driving demanding speakers with clarity and control.
- P-102 (1987) — Accuphase P-102 (1987): 50W/ch pure Class A, fully balanced dual-mono power amp. 22kg, 245W idle draw, and still the cheapest way into Accuphase Class A.
- P-11 — Stereo power amplifier released in July 1989 with dual monaural construction and fully balanced topology. Find full specifications and production years here.
- P-260 (1979) — Accuphase P-260 (1979): a stereo power amp with 130W Class-AB or 30W pure Class-A, MOS FET outputs, and an electronic bias switch.
- P-266 (1980) — Accuphase P-266 power amplifier (1983) with switchable Class A/AB, 130W/ch into 8Ω, and triple push-pull MOS FET output.
- P-300L — High-power stereo amplifier with balanced inputs and bridgeable mono operation, released in June 1984. Find full specifications here.
- P-300X — Accuphase P-300X (1980) stereo power amp: 200W+200W, ultra-low distortion, direct-coupled FET input, bridged mono mode. A high-value vintage workhorse.
- P-350 — Stereo power amplifier released in July 1994 with high current output and precision current feedback design. With full specifications.
- P-360 — Accuphase P-360 stereo power amplifier — 200W/ch into 8Ω, 400W into 2Ω, bridged 600W into 8Ω, MOS-FET cascode drive and 7-parallel output stage.
- P-500 — Accuphase P-500 (1985) — 500W/ch solid-state stereo power amp from Japan’s golden era. 33.5 kg of dual-monaural engineering, OCL design.
- P-500L — Stereo power amplifier released in February 1989 with high output and low distortion across a wide impedance range. Covers the original manual.
- P-550 — A high-power stereo amplifier released in April 1994 with current feedback topology and extensive use of gold-plated, high-purity signal path components.
- P-600 (1983–1987) — Accuphase P-600 (1983–1987), 300W/ch class-A/B flagship with 12-bit digital power meters and 2-ohm stability.
- PRO-20 — Accuphase PRO-20 (1994) studio power amplifier delivers 300W/ch into 2Ω with gold-plated signal paths and passive cooling—rare, robust, and built for precision.
- RC-6 — Universal infrared remote control for select Accuphase components from the 1990s. This page has detailed specs and production dates.
Cd Players
- DP-100 — Super Audio CD transport designed for high-resolution playback and premium build quality. Includes full specifications and original documentation.
- DP-11 (1989) — Accuphase DP-11 (1989) CD player — 18-bit ladder DAC, 8× oversampling, balanced XLR outputs, ~14 kg. An obscure but well-built high-end player from Accuphase's early digital era.
- DP-65V (1998) — Accuphase DP-65V (1998) CD player — separate transport and 20-bit MMB processor in one chassis, digital inputs, balanced outputs, expandable via DC-300/DG-28 option boards.
- DP-67 — High-end CD player and digital processor from 2003 with 24-bit conversion and MDS++ D/A technology. Covers the complete spec table and the original manual.
- DP-70V — Front-loading CD player with discrete 20-bit D/A conversion and fully separated digital/analog circuitry, released in November 1990.
- DP-77 (2002–2005) — The Accuphase DP-77 (2002–2005) is a dual-section SACD/CD player with 24-bit MDS Plus DACs, HS-Link expansion, and standalone DAC capability. Specs, history, and market prices.
- DP-80 — CD transport released in July 1986 as Accuphase’s first CD player, paired with the DC-81 digital processor. This page has the complete spec table.
- DP-85 — A high-end single-box SACD/CD player with modular digital architecture and ultra-low jitter performance. Covers period documentation and production dates.
Power Amplifiers
- P 370 — Accuphase P-370 (2001) stereo power amp: 75W/ch @ 8Ω, 24.4kg beast with current feedback design and 700VA toroidal transformer.
- p300 (1973) — Accuphase P-300 (1973): first Accuphase power amp, 180W/ch, 0.01% THD, 25 kg flagship with DC servo design.
- PE-2217 — Accuphase PE-2217, a virtually undocumented audio component known only from a 1979 classified ad in Audio magazine. No specs or design details survive.
- PS-1200 — High-capacity clean AC power supply designed to deliver stable, low-distortion voltage to audio systems. Includes original documentation and production years.
- PS-500 — AC voltage stabilizer released in March 1996 with 500 VA capacity and waveform shaping technology. Includes original documentation and production years.
Preamplifiers
- C-11 — Stereo preamplifier with balanced circuitry and dual phono inputs, released in July 1989. With the complete spec table and when it was made.
- C-200 (1973) — Accuphase C-200 (1973) preamp — 41-step attenuator, 400 mVrms phono overload, 10 inputs, 7 outputs. The reference-grade control center from Kensonic's golden era.
- C-202 (1987) — Accuphase C-202 (1987) stereo preamplifier — fully balanced, JFET-everywhere design with no ICs in the signal path, 110 dB S/N, persimmon sideboards.
- C-220 — Dedicated high-fidelity phono preamplifier released in June 1977 with switchable MC/MM head-amp and dual output options.
- C-230 — Accuphase C-230 preamp — first control center with MOS FET output stages, ICL DC design, built-in MC head amp. Japanese build, 445mm chassis.
- C-240 (1978) — Accuphase C-240 (1978) stereo control amplifier — fully symmetrical Class A DC design, 110dB S/N, 57 push switches, rosewood cabinet. Golden Era Japanese hi-fi.
- C-2400 — Stereo control amplifier released in August 2003 with AAVA volume control and optional phono stage compatibility. Covers detailed specs.
- C-265 — Accuphase C-265 stereo preamplifier — fully balanced, dual-mono, signal-current feedback, optional phono boards. A little-documented Accuphase model.
- C-270V — A high-level line-only preamplifier released in April 1992, fully replacing the original C-270 and inheriting design elements from the C-280V.
- C-275 — Accuphase C-275 (1995) preamp: 21.7kg, current feedback, Teflon PCBs, 0.005% THD. Built like a vault. Find full specifications here.
- C-275V — Accuphase C-275V (2000) preamp: 21.7kg, gold, 0.005% THD, Teflon PCBs, modular mono construction. With detailed specs and period documentation.
- C-280 (1983–1986) — Accuphase C-280 stereo preamplifier (1983–1986): dual-mono Class A design, ¥680,000 original price, MC head amp, collectible Japanese high-end.
- C-280V — Flagship stereo preamplifier from Accuphase’s 280 series, introduced in 1990 with fully balanced Class A design and discrete phono stage.
- C-2810 — Precision preamplifier released in June 2006 with fully mono-construction and AAVA volume control. Covers full specifications and original documentation.
- C-290 — A high-end stereo preamplifier with balanced transmission, discrete current feedback circuitry, and modular dual-mono construction, released in November.
- C-290V — Accuphase C-290V (1998) precision stereo preamplifier weighs 23.8kg and features current feedback design, 0.005% THD, and Teflon PCBs.
- DC-300 (1996) — Accuphase DC-300 (1996): the world's first digital stereo preamplifier, with eight 20-bit D/A converters per channel and full 48-bit DSP control.
- DC-330 — Digital preamplifier released in November 1999 with 24-bit MDS D/A conversion and support for high-resolution audio formats.
Processors
- DG-28 — Digital voicing equalizer with 64-band correction and automatic room calibration. With full specifications, original documentation and production years.
- G-18 — Third-octave graphic equalizer released in March 1985 with 33 bands, constant Q of 4.3, and discrete transistor-FET circuitry.
Tuners
- 100-AM — Accuphase 100-AM, an obscure tuner model known only from a single 1979 HiFI-Stereo listing with dimensions, price, and S/N specs. Little else documented.
- T 110CS — A CS-PCM digital satellite tuner released by Accuphase in November 1995 with advanced 18-bit digital processing. Covers full specifications.
- T-100 (1973–1982) — The Accuphase T-100 (1973–1982) was Accuphase's first tuner — a pure analog FM/AM design with a 5-gang front end, $750 original price, and serious AM reception.
- T-1000 — FM stereo tuner released in August 2005 with advanced digital synthesis and DSP-based demodulation. With the complete spec table and the original manual.
- T-101 (1975) — Improved version of the T-100 from 1975. Featured enhanced sensitivity, better selectivity, and refined stereo decoding.
- T-104 — FM stereo tuner with quartz-locked frequency synthesizer tuning, released in October 1978. Covers original documentation and production years.
- T-105 — The Accuphase T-105 (1980–1985) is a quartz-synthesizer FM tuner with precision tuning, excellent build, and a NiCad battery that can leak—check for mods.
- T-106 (1985) — Accuphase T-106 (1985) AM-FM tuner — optical pulse tuning, 14 presets, dBf signal meter, AM synchronous detector, $1,100 new.
- T-107 (1985–1991) — Accuphase T-107 (1985–1991) FM tuner — quartz synthesizer tuning, DGL detection, 90 dB mono S/N, 12-station memory. Rare, €350–€480.
- T-108 (1990–1993) — Accuphase T-108 (1990–1993) FM stereo tuner — quartz synthesizer, 16 presets, DGL detection, first Accuphase tuner with balanced XLR output. Specs and history.
- T-109 (1993) — Accuphase T-109 (1993) FM stereo tuner — ¥150,000 flagship with quartz synthesis, 16 presets, balanced XLR outputs, Advanced DGL detection, 9.5 kg.
- T-109V (1999–2005) — Accuphase T-109V (1999–2005) FM stereo tuner — Advanced DGL detection, pulse tuning, 32-station memory, balanced XLR out. A top-tier modern tuner.
- T-11 — FM stereo tuner with quartz synthesizer tuning and balanced outputs, released in April 1990. Find the complete spec table and when it was made here.
Unknown
- 100-W — Accuphase 100-W minimal documentation mono amplifier spec sheet from HiFI-Stereo 1996 listing. Find when it was made here.
- 280L — Little is documented about the Accuphase C280L. What survives comes from period equipment directories.
- 91-D — Accuphase 91-D (DC-91) 20-bit D/A converter, ca. 1994–1996. $15,995, THD 0.002%, S/N 120 dB. Little documented beyond period reviews.
- DC-91 — Accuphase DC-91 20-bit D/A converter (ca. 1994–1996). Sold with DP-90 transport; HPG, Toslink, coaxial inputs; THD 0.002%, S/N 120 dB.
Other Models
- A 50V — A pure class A stereo power amplifier released in December 1998 with high-power output and precision current feedback design.
- A-60 — Class-A stereo power amplifier with dual-mono design and 60 watts per channel into 8 ohms. With full specifications and production years.
- AC-1 — Low-output moving-coil phono cartridge with line contact stylus, released in October 1979. Covers full specifications and production years.
- DC 101 — A high-end digital processor and D/A converter designed for SACD playback, built to exacting audiophile standards. Covers the complete spec table.
- F-15L — Active crossover with balanced input/output, released June 1987. Find the complete spec table, the original manual and when it was made here.
- F-20/F-20M — A 2-way channel divider released in May 1997, designed for high-precision multi-way speaker systems with modular crossover control.
- F-25 — Four-way active crossover with modular design, switchable slopes, and precision level controls. Covers full specifications and production years.
- F-25V/F-25VM — Multi-channel divider for active crossover systems, released February 2001. This page has the complete spec table, the original manual and when it was made.
- M-200 — No verified Accuphase M-200 exists — the model people mean is the M-2000, a 250W/8Ω, 50kg gold-plated Class-AB monoblock from December 1997.
- M-2000 — Solid-state monoblock power amplifier sold in December 1997 with extreme power output and precision engineering. This page has the complete spec table.
- P-4200 — Accuphase P-4200 stereo power amplifier — based on the P-4100 with A-200 technology and MCS+ current feedback. Little numeric documentation survives.
- P-4500 — Accuphase P-4500: little-documented Class A stereo power amplifier, a redesign of the P-4200 said to incorporate A-200 technology. Known specs and honest gaps.
- P-800 — Accuphase P-800: bridged balanced power amp, 400W/8Ω, 600W/1Ω, 28 output transistors per channel, persimmon side panels.