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Harman Kardon PM665

Stereo Integrated Amplifier (1985-86)

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Harman Kardon PM665

Specifications

Power output: 100 watts per channel into 8Ω (stereo)

Frequency response: 0.2Hz to 150kHz

Total harmonic distortion: 0.08%

Damping factor: 65

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

Signal to noise ratio: 75dB (MC), 77dB (MM), 78dB (line)

Dimensions: 443 x 134 x 398mm

Weight: 13.5kg

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Reviews

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rating
Reviewed Sep 05th, 2017 by loch2

Wonderful underrated amplifier. Extremely powerful. Great looks and tactile feel.

rating
Reviewed Dec 25th, 2016 by RocknRollRelic

One of the smoothest and effortless drivers of my main system. Does exactly what an amp should do, let the source shine through good speakers without coloring the sound. Button switches are a minor pain, needing to be cleaned once in a while, but worth it for the pure power it provides. I'll never let mine go.

rating
Reviewed Jul 07th, 2016 by Gustavmkd

I was never fun of Harman Kardon as brend, but few years ago I tested PM665 with tube pream and result was just...great..!! I dont know about other models of HK but this one really surprice me, I got more than I expected. Mixing transistor with tubes is what I do so many years, this result was amazing. HK output sound is neutral and well balanced so intervention should be with colourful tube preamp...Mullard, Philips tubes. Avoid Telefunken or Siemens tubes otherwise you will get nothing....funeral..:)
Highly recommend in hybrid combination with tube preamp...

 

Comments

re: PM665

My PM665 has stopped working.
One of the fuses keeps blowing (the F1 fuse from the diagram).
Does anyone have any experience with this?

re: PM665

You more than likely have blown an output transistor or two,,if so possibly along with an open emitter resistor.
Get an ohm meter and check the output transistors for shorts,,,compare to others resistances,,
Get the part # off of the transistor and Google that number
Buy from a us supplier otherwise you will buy fakes that either won't work or won't last

re: PM665

Dear Rob, thank you for your reply.
Yes, three output transistors are blown.
The resistors however seem to be in good working order.
I think the fault might be somewhere in the preamp part. Could that be possible?

This website is not affiliated with or sponsored by Harman Kardon. To purchase PM665 spares or accessories, please contact the company via their website or visit an authorised retailer.