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Carver M-400

Stereo/Mono Power Amplifier

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Carver M-400


The Carver M-400 power amplifier is unique in electronic and mechanical design.

It is designed to provide the listener with a source of voltage and current to drive high fidelity loudspeaker systems.

It may be used as either a single-channel or dual-channel unit with very high efficiency of weight, size, heat dissipation and cost, with very low distortion and noise.

Intended for use in the home high fidelity music system, it is capable of extremely high power output with excellent loudspeaker load-drive capability.

The design has been optimized for home audio applications in which high power excursions are necessary to prevent distortion of dynamic transients, while bulk, weight, heat and price considerations have traditionally restricted use of such devices to a small number of consumers.

Efficiency has been dramatically improved by techniques which substitute electronic control for the large quantities of bulk copper, iron and aluminium required by conventional designs.

This control factor in the power supply section is augmented by amplifier design which dissipates power as required on signal demand so that heat sinking and quiescent dissipation are held to a minimum.

Distortion components typical of the more efficient traditional class AB designs are virtually eliminated by use of sliding idle current.

Comprehensive amplifier and loudspeaker protection is provided by conventional means, augmented by the controlled power-supply, which will shut down under unsafe conditions as determined by a separate sensing network.

Analogue computer techniques are used to monitor operational parameters and override the normal power supply control function in the event that operating conditions become unsafe for amplifier or loudspeakers.


  • Power output: 201 watts per channel into 8Ω (stereo), 500W into 8Ω (mono)

    Frequency response: 20Hz to 20kHz

    Total harmonic distortion: 0.05%

    Damping factor: 150

    Input sensitivity: 1.5V

    Signal to noise ratio: 100dB

    Weight: 12lbs

    Finish: black anodized

    Year: 1980

  • Power output: 201 watts per channel into 8Ω (stereo)

    Frequency response: 20Hz to 20kHz

    Total harmonic distortion: 0.05%

    Signal to noise ratio: 100dB

    Dimensions: 6.75 x 6.75 x 6.75 inches

    Weight: 9lbs


instruction/owners manual   English -

A,t schematics   English -

service manual   English -

service bulletins   English -

A flyer   English - jebba62

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Reviewed Jan 14th, 2015 by kve777

Great little amp with BIG power. 201 WPC or 500 Watt Mono Block. Can be had for little money. A little tough to work on, but the sound quality makes it worthwhile. Personally, I like them for surround channels and small room applications. Worst part is the speaker terminals, but they can be easily upgraded to binding posts.



re: M-400

Looking for a good service shop to repair my m400. Boston area preferable

carver m-400

looking for the service manual

This website is not affiliated with or sponsored by Carver. To purchase M-400 spares or accessories, please contact the company via their website or visit an authorised retailer.