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Peavey CS-400

Professional Stereo Power Amplifier

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Peavey CS-400


Power output: 120 watts per channel into 8Ω (stereo), 400W into 8Ω (mono)

Frequency response: 20Hz to 20kHz

Total harmonic distortion: 0.05%

Damping factor: 200

Signal to noise ratio: 100dB

Dimensions: 19 x 5.25 x 12.5 inches

Weight: 40lbs

Year: 1989



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Reviewed Dec 07th, 2014 by drdavesoca

This is the most durable sound system core unit anyone could hope for and still produces a quality full range audio product. I've been using this unit successfully for years in some of the most rugged environments including the middle of the desert operating from generator power while conducting motorcycle events in the heat of the day from 8 ohms down to nearly nothing at 2 ohms with the same success.



re: CS-400

It's probably to late for your repair question, but I would suggest calling Peavey Service. They are the best. They will send you a PDF of the schematic if you just ask. They also sell replacement transistors. I've had one of these working in a skating rink since mid 80's and have held up nicely. After 30 years had to do some transistor replacements. Was much simpler than I thought. Basically pull the transistor board and check transistor measurements and compare to the other known good channel. You will find one shorted or several open.

The owner of the rink decided to retire this amp and purchase a new Crown Class D amp. I snagged this own up for my own personal use... What a score.

Nobeal's picture

re: CS-400

I have a CS-400 and one chanel is down. I think it's a transistor but there is some lot of different transistor in this amplifier.
there are two ranges of transistor (8 per range) and there is :
please let me know what real type of transistor that I need for to repare this fabulos PEAVEY.
many thank

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