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Kenwood KA-7100

DC Stereo Integrated Amplifier (1977-79)

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Kenwood KA-7100


The development of the DC power amplifier can be counted as one of our most significant engineering successes, because it provides an almost perfect linear frequency response that starts virtually from 0Hz.

What this means is that the signal amplified has effectively the same waveform as that at the input terminals. The amplifier maintains extremely low distortion right down to the ultra-low frequency range. With excellent phase and transient characteristics - the response in actual conditions of musical reproduction - the sound that you hear is perfectly natural.

The direct-coupled amplifier consists of a three-stage differential circuit (with a dual-gate FET in the first stage) and our power amplifier circuitry, assuring ample, highly stable, effective power output.

To safeguard all circuits, and your precious speakers, there's a built-in limiter protection circuit and protection relays.

With phase and transient distortion both at negligible levels, the Kenwood KA-7100 provides a refreshing clarity and roundness of sound even at high volume levels.


Power output: 60 watts per channel into 8Ω (stereo)

Frequency response: 0Hz to 100kHz

Total harmonic distortion: 0.02%

Damping factor: 50

Input sensitivity: 2.5mV (MM), 150mV (line)

Signal to noise ratio: 80dB (MM), 110dB (line)

Output: 150mV (line), 30mV (DIN)

Speaker load impedance: 4Ω to 16Ω

Dimensions: 430 x 149 x 379mm

Weight: 11.5kg


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Reviewed Sep 21st, 2018 by

For serious vinyl lovers out there: the phono stage on the KA-7100 is phenomenal (phono being the main source of music at that time). Very straight, clear and uncoloured performer. Amp is easy to maintain because of the lack of Darlington-systems which are used in its bigger KA-sisters. Also: it's designer later founded Accuphase - so go figure. Last but not least: cheap and easy to find, but keep in mind the fact most of them need work to some degree. But then, they don't build amps like these anymore. Highly recommended!

Reviewed Jun 30th, 2018 by

An all-time classic amplifier in both looks and sound. Delivers the goods and won't break the bank.

Reviewed Aug 26th, 2016 by

I really like how this KA 7100 sounds. I have a few vintage amps and receivers now but this one is just somehow different from the rest. Set up with a technics SL 1700 and Dynaco A25 speakers it just sounds really good to me. At low volume it doesn't lose any of the detail of the music.

Reviewed Sep 23rd, 2015 by

Fine & strong machine. High performance across the time. Sound like a tube. Vic

Reviewed Nov 24th, 2014 by

These units (KA-7100/KA-7300) are rock-solid performers and can be still be found in nice condition at very reasonable prices. Mine required nothing but a bit of dust removal (to cure that old electronics smell) and a bit of Deoxit on the contacts. The KA-7300 is currently powering a sub-sat system, and the KA-7100 is on a pair of Wharfdales that are part of my multi-room audio setup. These amps are a huge sonic improvement over the much newer (but still vintage) NAD receivers I had been using, and they weren't bad. Testing the units with KEF 103.2's they both performed very well indeed. The sound is warmer than the NAD's but every bit as detailed, and the imaging/staging is superior. As a bonus, the units easily serviced if need be.

Reviewed May 03rd, 2013 by

the best



re: KA-7100

KA-7150 is the same amplifier with contrasting faceplate.

This website is not affiliated with or sponsored by Kenwood. To purchase KA-7100 spares or accessories, please contact the company via their website or visit an authorised retailer.