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Harman Kardon HK640

Stereo Integrated Amplifier (1996-98)

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Harman Kardon HK640


Power output: 55 watts per channel into 8Ω (stereo)

Frequency response: 1Hz to 90kHz

Total harmonic distortion: 0.1%

Damping factor: 85

Input sensitivity: 0.13mV (MC), 2.4mV (MM), 140mV (line)

Signal to noise ratio: 75dB (MC), 79dB (MM), 84dB (line)

Channel separation: 65dB (MM), 65dB (MC), 60dB (line)

Speaker load impedance: 4Ω (minimum)

Dimensions: 443 x 134 x 359mm

Weight: 8.8kg


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re: HK640

Merry Xmas to all of you.
I need your support
my HK640 power Xformer is gone.
Can I use some alternative one?
I can't see the power details because i'm not good at this.
Can you help me please (voltages, etc...)


This website is not affiliated with or sponsored by Harman Kardon. To purchase HK640 spares or accessories, please contact the company via their website or visit an authorised retailer.