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Kenwood KA-3700

Stereo Integrated Amplifier (1977-80)

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Kenwood KA-3700


Power output: 20 watts per channel into 8Ω (stereo)

Frequency response: 20Hz to 20kHz

Total harmonic distortion: 0.08%

Damping factor: 30

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

Signal to noise ratio: 72dB (MM), 100dB (line)

Output: 140mV (line)

Speaker load impedance: 4Ω to 16Ω

Dimensions: 380 x 140 x 291mm

Weight: 5.7kg


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Hi-Fi Stereo

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Reviewed Dec 11th, 2018 by joma0711

I've had this amp for so long I can't recall where or how it is mine. Definitely didn't buy it though, I've had it around 25 years I think.
Beautiful visually, feels great to operate the controls, especially the big ones. The loudness and tone controls are typically 70s sounding, but actually quite useful (and clicks and centre indents always appreciated). Sound is warm, satisfying to listen to, softer sounding than my Arcam alpha 5s, but easy on the ears for hours on end. Midrange excellent: I played Steve Reich's Drumming and it really sang. If you see one at a reasonable price, I recommend it.
I'm actually considering adding a pre-amp out facility and using it as my main pre-amp to drive itself and other power amps as well :-)

Reviewed Nov 28th, 2018 by backarelli

Beautiful worm sound , hi quality ...

Reviewed Oct 10th, 2018 by jasonclark

One of the best ‘little’ amps I’ve ever had, and I’ve had a few. Clean, detailed and warm output with an amazingly low noise floor. Has an excellent phono stage. More than happy with it. Hugely underrated.

Reviewed Feb 25th, 2018 by Hvan_51_fr

This small amp has the 70's kenwood signature : Warm and fine sound. I use it with a home-made triphonic system + tuner in a bedroom, and the 3700 is perfect for this job. I also get a KA1500 with similar sound used with vinyl turntable. Both models are nice to listen...

Reviewed Aug 18th, 2015 by uchu

Tres bon ampli un son chaud

Reviewed Feb 22nd, 2015 by pjp

Rendimiento general que se puede esperar en un amplificador de mayor precio
Buen diseà±o y calidad de construccià³n
Sonido solido y limpio en un amplificador de calidad



KA-3700 Repair

Had this amp given to us a while back and I used it for a few years, then used it as a garage stereo, my dad used it one day and it blew/stopped working.

I'd like to get it working again instead of replacing it, but haven't had any experience with much before. I have soldering equipment and have soldered before, with basic electronic knowledge from engineering study.

I think ill try downloading the manual and replacing the fuses with correct ones, looks like one has blown. If this doesnt fix the problem, does anyone have suggestions on what to check next?

Do I need a good multimeter to test components, or should I just try replacing the probable faulty components? Thanks :)

re: KA-3700

just downloaded the service manual Cheers
Original amp, bought secondhand 1976, never a hassle. blew a couple of fuses probably running one two many speakers
never miss something until it's gone

This website is not affiliated with or sponsored by Kenwood. To purchase KA-3700 spares or accessories, please contact the company via their website or visit an authorised retailer.