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Kenwood KA-4002

Solid State Stereo Amplifier (1970)

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Kenwood KA-4002

Description

The Kenwood KA-4002 is the solid state stereo amplifier that packs a compact sized wallop. With 58 watts and intensely low distortion, this instrument guarantees top level performance of the highest proportions.

Another remarkable example of Kenwood's complete, high quality circuitry, the KA-4002 also stresses modern, up to date design with its simple stylized exterior. Its unbeatable craftsmanship makes this model another testimony to Kenwood's deserved world fame.

Specifications

  • Power output: 18 watts per channel into 8Ω (stereo)

    Frequency response: 20Hz to 40kHz

    Total harmonic distortion: 0.5%

    Damping factor: 50

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

    Signal to noise ratio: 60dB (MM), 70dB (line)

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

    Speaker load impedance: 4Ω to 16Ω

    Semiconductors: 18 x transistors, 10 x diodes

    Dimensions: 13 x 4-5/8 x 9-7/16 inches

    Weight: 5.7kg

  • Power output: 18 watts per channel into 8Ω (stereo)

    Frequency response: 20Hz to 40kHz

    Total harmonic distortion: 0.5%

    Damping factor: 50

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

    Signal to noise ratio: 60dB (MM), 70dB (line)

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

    Speaker load impedance: 4Ω to 16Ω

    Dimensions: 352 x 118 x 240mm

    Weight: 5.7kg

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Reviews

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rating
Reviewed Jul 01st, 2017 by tyrobertson72

I'm constantly critical of my Kenwood KA-4002, for failing to push my 4 DCM CX-07's loud enough when I'm really counting on it to come through.
But I'll never sell it either.

The reason is it's incredible versatility and overall great sound.

This little integrated amplifier is nothing more than it needs to be.
It's lighter than anything,
and smaller too.
This all weighs fairly heavy when spring roles around,
and demands that the herd be culled.

I like the screw in speaker posts.
I like the 2 aux. and 2 phono channels.

And then to seal the deal,
not only is there a mono line level output
to send to your subwoofer,
but there are 2 other line level outputs.
First there is the 1/4, variable headphone jack output
(which does not cut the speakers!),
and there is a line level 1/4 stereo output,
which can be sent to another amplifer, or a pre-amp, or any number of options..

All of which are are available through this one little 18 watt amp.

If it had a heck of a lot more power, I would have given it a 10, but that 18 watts is really only good for driving 2 speakers.
I initially gave it an 8, but bumped it up after listing all its great features..

rating
Reviewed Jan 02nd, 2017 by backarelli

This little old man playing a very nice and warm like a tube amp.

rating
Reviewed Jan 24th, 2015 by surf1doc

My first amp purchased in 1971, Still going strong wired to a Marantz SR6005 to drive zone 2. 6005 is in 7.1 mode so I need the additional 4002 for power. 4002 still works and looks great!

 

Comments

re: KA-4002

My first amp bought in 1973 along with the matching KT 2001 tuner. Both units still looking and working like new in 2015. I replaced the power supply and output capacitors, and the amp now sounds superb.

This website is not affiliated with or sponsored by Kenwood. To purchase KA-4002 spares or accessories, please contact the company via their website or visit an authorised retailer.