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Harman Kardon PM650

Hi Current Capability Integrated Amplifier (1983-88)

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Harman Kardon PM650


  • Power output: 50 watts per channel into 8Ω (stereo)

    Frequency response: 0.5Hz to 140kHz

    Total harmonic distortion: 0.08%

    Signal to noise ratio: 78dB (MM), 80dB (line)

    Semiconductors: 83 x transistors, 2 x FET, 8 x diodes, 17 x zener diodes, 3 x bridge rectifiers, 2 x varistors

    Dimensions: 440 x 122 x 360mm

    Weight: 10.4kg

  • Power output: 70 watts per channel into 8Ω (stereo)

    Frequency response: 1Hz to 150kHz

    Total harmonic distortion: 0.1%

    Damping factor: 71

    Input sensitivity: 0.12mV (MC), 2.2mV (MM), 135mV (line)

    Signal to noise ratio: 70dB (MC), 73dB (MM), 74dB (line)

    Channel separation: 54dB (MM), 51dB (MC), 50dB (line)

    Dimensions: 443 x 134 x 398mm

    Weight: 8.7kg


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Reviewed Jul 29th, 2016 by Bobmartens

This vintage gem is truly astounding. Years ago I bought a really beaten-up one for very little, and despite it's delapidated looks and non-working front illumination, it has been my refence when it comes to judging speakers ever since. 50 Watts haven't been so clean and loud at the same time ever, whatever the speaker you're running. The tightness low and high is remarked by everyone. Even totally unseasoned listeners ask me 'what is making that great sound?' Sadly lost due to a catastrophic mains power incident at my place, I now found a new second hand one, soon to be mine. Never let down an opportunity to listen to one. Avoid the Vxi, as it has nothing to do with this.

Reviewed Oct 06th, 2015 by colin44ct357

I recently had the pleasure of reworking my second hk pm650 and a quad 909.
Both had the beautiful warm tone as one would expect from these beauties, retro rules...Sound is life! Cheers from cape town sa.

Reviewed Jan 19th, 2015 by venkat1

I Bought PM650 for $200 and it's really dynamic and powerful, with a crispness, more refined and clarity to the way voices.

These have enough power to drive even demanding speakers, the sound is very clean and open. (The speakers i am driving are Phase technology - Teatro 7.5).

I have connected SONOS Connect to PM 650 via RCA cable and turned PM 650 into a Wireless stream my entire music library stored in my computer .

Also I have connected Pioneer PL-600 turntable.

I found that PM650 delivered the best. Its power amp is strong. Its purely analog performance, from input to speaker is simply great 10 out of 10 stars to PM650 amp.

If you find it, just grab it......



re: PM650

Very well, current sounded amplifier.

This website is not affiliated with or sponsored by Harman Kardon. To purchase PM650/PM650VXi spares or accessories, please contact the company via their website or visit an authorised retailer.