Carver

Bob Carver's magnificent obsession with impossible power

History

Carver Corporation was founded in Edmonds, Washington in 1972 by Bob Carver, a brilliant engineer who would become known for controversial but innovative audio designs. Carver's philosophy was to challenge conventional wisdom through creative engineering. Bob Carver first gained fame with the Carver Silver Seven (1980s)—monoblock amplifiers that used a unique "magnetic field" output stage. Carver claimed these 375-watt amplifiers could sound like high-end tube amps costing ten times as much, leading to famous debates with high-end manufacturers. The M-400 and subsequent M-1.0t amplifiers featured "cube" power supplies that were remarkably compact for their power output. Carver's "Tracking Downconverter" technology allowed massive power from small chassis. Carver also developed Sonic Holography—a signal processing system that attempted to correct room-induced crosstalk and create more holographic imaging. The Sonic Hologram Generator (C-4000 preamp) implemented this technology. In 1990, Carver Corporation was sold to Curtis Mathes, and Bob Carver left to form Sunfire. The Carver brand continued but lost its innovative edge.

Key Facts

Fact	Detail
Founded	1972, Edmonds, Washington
Founder	Bob Carver
Famous For	Magnetic field amplifiers
Controversy	Challenge to high-end orthodoxy
Key Innovation	Sonic Holography
Current Status	Vintage collectible

Legendary Products

Carver Silver Seven (1980s)

Monoblock amplifiers that challenged high-end conventions. The Silver Seven's "magnetic field" design delivered 375 watts with claims of tube-like sound. Famous challenge to high-end manufacturers.

Carver M-1.0t (1980s)

A stereo power amplifier using "Tracking Downconverter" technology. The M-1.0t delivered 200 watts per channel from a remarkably compact chassis.

Carver C-4000 (1980s)

A preamplifier featuring Sonic Holography processing. The C-4000 attempted to create more holographic imaging through electronic crosstalk cancellation.

Carver PM-1.5 (1980s)

A massive power amplifier delivering 375 watts per channel. The PM-1.5 represented Carver's ultimate statement in power amplification.

Sound Signature

Carver amplifiers sound like nothing else in vintage audio, and that is entirely by design. Bob Carver's Magnetic Field power amplifier topology delivers enormous dynamic headroom from surprisingly compact chassis — the M-1.0t puts out 200 watts per channel from a box you can hold in one hand. The sound is big, bold, and unapologetically powerful, with a sense of effortless authority on dynamic peaks that makes conventional amplifiers feel constrained by comparison.

The Sonic Holography processing in the C-4000 preamp is another uniquely Carver experience. By canceling acoustic crosstalk between speakers, it creates a soundstage that extends well beyond the speaker boundaries — when it works with the right material, the effect is startling. Carver equipment rewards listeners who prioritize excitement, scale, and dynamic impact over the last degree of tonal refinement. These are amplifiers built for people who want to feel their music.

Collecting Carver

Carver collecting is as much about audiophile history as it is about sound. The Silver Seven monoblocks are the legendary pieces — Bob Carver famously challenged the high-end establishment by claiming his amplifiers could match the sound of competitors costing ten times more, and the resulting blind tests became one of the great controversies in audio history. Original Silver Seven pairs rarely surface and command strong prices when they do.

The M-1.0t is the practical collector's choice — widely available, impressively powerful, and genuinely enjoyable to listen to. The C-4000 preamp with its Sonic Holography processing is worth experiencing at least once, as there is nothing else quite like it. The PM-1.5 at 375 watts per channel is the ultimate Carver power statement. When buying vintage Carver, prioritize units that have been professionally serviced — the Tracking Downconverter power supplies in some models benefit significantly from fresh capacitors.

Competitors & Comparisons

Carver vs high-end: Carver challenged expensive orthodoxy Carver vs mainstream: More powerful, more innovative Carver vs Bob Carver's Sunfire: Later designs from founder

Models

Amplifiers

4000T (1977) — Carver 4000T (1977): a little-documented solid-state preamp with Sonic Holography; Audio magazine praised it as one of the finest preamps of its era.
C-4000 (1982) — Carver C-4000 (1982) preamplifier — Sonic Holography Autocorrelation, Peak Unlimiter, 98dB line S/N, 1.5Hz-60kHz response. A bold 1980s spatial-audio experiment.
LIGHTSTAR-II (1985) — A revolutionary solid-state power amplifier known for its high damping factor, low distortion, and unique 'Magnetic Field Power Supply'.
LIGHTSTAR-REFERENCE (1992) — Carver LIGHTSTAR-REFERENCE (1994) — 300Wpc dual monaural power amp, 200 damping factor, 77 units made. Rare flagship before Sunfire.
M-200T (1979) — Carver M-200T (1979) magnetic field power amplifier — 62 lb chassis, 128W/ch into 8Ω per the service manual, triac-controlled supply, bridged-mono capable.
M-4.0T (1988) — Carver M-4.0T (1988) — 375 W/ch into 8 ohms, 1,000 W bridged mono, Magnetic Field supply in a 23 lb chassis. Service bulletins, specs, and market notes.
M-400A (1978) — Little is documented about the Carver M-400A (1978). Period sources covered it as the Magnetic Field Amplifier M-400/a: 201 W/ch, out-of-phase channels.
M-400T (1979) — A unique magnetic field power amplifier prototype by Bob Carver, demonstrating revolutionary high-power amplification through magnetic coupling.
M-500T (1985) — A high-current monoblock transformer module designed for custom amplifier builds by audio enthusiasts. Find current market value and production dates here.
Silver Seven — Carver Silver Seven-t monoblock power amplifier (1980s) delivers 900 watts with Magnetic Field topology—brash, bold, and built to challenge high-end norms.
Silver Seven-t — Carver Silver Seven-t (1980s) solid-state monoblock amp: 900W into 4 ohms, Magnetic Field output. Legendary power, polarizing sound.
SILVER-7T (1986) — A legendary solid-state power amplifier known for high power, Musical Surround, and distinctive silver faceplate. With detailed specs and production dates.
TFM-35 (1980) — A high-current solid-state power amplifier known for robust build and dynamic sound, part of Carver's legendary TFM series.
TFM-45 (1985) — Carver TFM-45 (c.1985) — a 375W/ch magnetic-field power amp in Carver's compact Cube chassis, with balanced XLR inputs and dual-mono rails.
TX-2 (1977) — Carver TX-2 AM/FM stereo tuner with Asymmetrical Charge-Coupled FM Stereo Detector; period Audio reviews, 1984-1986; little else documented.

Cassette Decks

HR-732 — Carver HR-732: a little-documented early-'90s audio model, known mainly from a 1992 HI-Fi-Stereo-Buyers price listing at $376.
TDR-1550 — The Carver TDR-1550 is a late-1990s auto-reverse cassette deck with Dolby B/C/HX Pro, PC-OCC head, and remote control; known from HiFI-Stereo listings.

Cd Players

NAD-5100 — Carver NAD-5100: essentially undocumented; one 1992 Audio classified ad lists an NAD 5100 CD player. Identity under the Carver name uncertain.

Power Amplifier

M-500 — Carver M-500 power amp — 200+ W/ch, Magnetic Field Coil supply, 620 W mono into 8 ohms, and a known turn-on circuit fix.

Power Amplifiers

490T — Carver 490T — early-90s CD player with single-bit DAC and dual 6DJ8 tube output, ~$700 new. Little documented beyond period reviews.
TFM-55 — Carver TFM-55 power amplifier — a little-documented THX-certified model; Audio (Oct 1996) lists the TFM-55x variant at 380W/500W/1000W, $1,250.
TFM-75 — Carver TFM-75 Magnetic Field power amplifier, advertised 1992–94 at 750 W/ch into 8 ohms. Little else documented. Find production dates here.

Preamplifiers

C-1 — A preamplifier featuring Sonic Holography processing designed to expand soundstage imaging beyond speaker boundaries. With full specifications.
PM-1 — Little-documented Carver PM-1.5 pro Magnetic Field power amp: 1983 debut, 21 lbs, rated 450W/ch; bench-tested at 480W/ch.

Processors

MXR-2000 (1983) — Carver MXR-2000 (1988) — 200W/ch receiver with Magnetic Field amplifier and ACCD FM detector; documentation is thin.

Receiver

AV-405 — Carver AV-405: little-documented mid-1990s five-channel amplifier — 100W front, 110W center, 50W surround; $850; 0.05% THD.

Receivers

AV-634 — Carver AV-634 four-channel power amplifier, 60W per channel, $600 in 1994. Little-documented Carver A/V amp with subwoofer crossover.
AV-64 — The Carver AV-64 was a four-channel power amplifier rated at 60W × 4 into 8 ohms, listed in Audio's 1990–91 spec tables. Little else is documented.
AVR-100 (1997) — A rare and innovative audio-video receiver from Carver, blending high-end audio performance with early surround sound integration.
HR-742 — Carver HR-742 A/V receiver with Sonic Holography, 80 WPC, 30 presets, $630 in 1991. Little else documented. With production years.
HR-772 — Little is documented about the Carver HR-772. The same table grouped it alongside other Carver models—the TFM-15 (100W), CM-1090 (140W), HA-752 (100W)

Speakers

MXR-900 (1984) — A rare and innovative audio switching and control center from the golden era of high-end audio. Find the complete spec table and when it was made here.
Sonic Holography Generator (1986) — Carver Sonic Holography Generator (1986) — analog spatial processor that widens stereo imaging via phase manipulation. Rare, repairable, $150–$300.

Tuners

CT-17 — Carver CT-17 tuner/preamplifier with Dolby Pro-Logic surround, c. 1989-1990. Documented mostly through the December 1990 Audio review.
TX-11 (1978) — A rare and enigmatic Carver tuner with high selectivity and audiophile-grade circuitry from the late 1970s. With what it sells for today.
TX-11A (1978) — A rare and innovative Carver FM tuner known for exceptional sensitivity and selective tuning performance. This page has what it sells for today.

Unknown

CT-29V — Carver CT-29V A/V preamplifier/tuner with Dolby Pro Logic Surround, ca. 1992. Period review notes adequate FM performance; AM bandwidth rolled off at 3.5 kHz.
PM-1200 — Carver PM-1200 professional power amp — 450W/ch into 8 ohms at just 21 lb, a touring workhorse with a custom-capacitor maintenance story.

Other Models

1.0t — Carver M-1.0t — late-1980s magnetic field power amplifier, documented mainly through Carver's own ads claiming $3,000 sound for under $625.
A-760X — Carver A-760X Magnified Current THX power amp — 380W/ch into 8 ohms, 1,200W bridged, twin analog meters, $1,299 in 1997.
AV-63 — Carver AV-63: a little-documented three-channel home theater add-on amplifier from the early 1990s, rated 65 W per channel at 8 ohms.
AV-705X — Carver AV-705X five-channel home-theater amp (1996): 125 W/ch FTC-rated, 200 W single-channel via Power Steering, $1,199.
C-2 — A high-performance stereo preamplifier from the early 1980s known for clear sound and sophisticated engineering. Find the complete spec table here.
C-20V — Carver C-20V stereo preamp — mid-90s line-stage, listed at $759–$849 in period dealer columns. Sparse documentation; verify before buying.
CT-27V — Carver CT-27V Dolby Pro Logic A/V preamp/tuner — separates-grade home theater without the clutter. Used ~$699–$729 in period listings.
M 1 0T (1986) — Carver M-1.0t Magnetic Field Power Amplifier (1986) — 200W/ch into 8 ohms from a 19-pound chassis, with a 1000W bridged-mono rating and full service documentation.
M 400 (1980) — Carver M-400 (1980) — the Cube. 201 W/ch into 8Ω from a nine-pound Magnetic Field amplifier that rewrote the rules on size vs. power.
M.240 — Carver M.240 four-channel car amplifier with bridgeable pairs. Audio (May 1987) rated and measured 120W/ch at 4 ohms; otherwise thinly documented.
M1 5T — Carver M1.5t power amplifier — 450W/ch into 8 ohms, magnetic field power supply, Sonic Holography, variable-speed fan cooling.
MXR 130 — A stereo receiver featuring Bob Carver’s Asymmetrical Charged Magnetic Field Power amplifier, delivering 130 watts per channel.
PM-1.5 — Carver PM-1.5 Magnetic Field Power Amplifier — 450W/ch into 8 ohms, 21 lbs, pro-audio workhorse from 1983. Bench-tested at 480W/ch by Mix.
PM-1.5a (1989–1990) — Carver PM-1.5a (1989-1990): 450W/ch into 8 ohms, 1200W bridged mono, Magnetic Field power supply. The pro-rack workhorse that became the PM-1200.
PM-1201 — Carver PM-1201 Magnetic Field power amp — 600W into 4 ohms, 2U rack, 24.3 lbs. The manual explains the trick.
PM-1400 — Carver PM-1400 pro power amp — 475W/ch into 8 ohms, 700W into 4, 1400W bridged mono. Class H Magnetic Field supply, 2U rack, sequencing and PowerLink.
PM-300 — Carver PM-300 — 1U Magnetic Field pro amp, 110W/8Ω stereo, 300W bridged mono, clipping eliminator, LED status display.
PM-350 — Carver PM-350 (1986–1990) — 350W/ch pro amplifier with magnetic-field design, 21 lbs, 900W bridged mono. Modular, serviceable, and genuinely usable today.
PM-600 — Carver PM-600 pro amplifier — 200W/ch into 8 ohms, 700W bridged mono, direct 70V output, Magnetic Field supply, convection cooled.
PM-700 — Carver PM-700 pro power amp — 350W/ch into 4 ohms, Class H, plug-in crossover and attenuator options. A road-tough Series II workhorse.
PM-900 — Carver PM-900 pro amplifier — Magnetic Field supply, 625W into 70V bridged, clipping eliminator, sequenced power-up. A lightweight touring workhorse.
Receiver 2000 — Carver Receiver 2000 (c. 1985-88): combined Magnetic Field Amplifier, Sonic Holography, and Asymmetrical Charge-Coupled FM Detector in one receiver.
SD/A-490t — Carver SD/A-490t CD player with dual 6DJ8 tube output stage, single-bit DAC, and Soft EQ. $699 new in 1991; documented in period press.
TFM 15CB — A high-current, high-voltage power amplifier released in the mid-1990s with 100 watts per channel into 8 ohms. Find full specifications here.
TFM 25 — A high-current magnetic field power amplifier from Bob Carver’s late-1980s lineup, delivering 225 watts per channel into 8 ohms.
TFM-15 — Carver TFM-15 power amp — 100W/ch into 8 ohms, $399 new, Magnetic Field supply and a deliberately warm tube-ish voicing.
TFM-35X — Carver TFM-35X — 360 Wpc @ 4 ohms THX-era power amp, gold-plated jacks, dual meters, reviewed as a value leader.
TFM-6CB — A stereo power amplifier delivering 65 watts per channel into 8 ohms, noted for its analog sound and tactile controls. With the complete spec table.