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Harman Kardon HK6350R

Stereo Integrated Amplifier

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Harman Kardon HK6350R


The HK6350R was designed to provide respectively 38 amperes of instantaneous current.

The bandwidth of this unit is exceptionally wide and independent of negative feedback. This improves transient accuracy and phase linearity.

This unit has been designed to have low distortion and wide bandwidth without high negative feedback. This further improves its dynamic accuracy.

In order to achieve the above goals, all discrete electronic circuitry has been employed. All available integrated circuits could not provide this high level of performance.

Harman Kardon engineers developed a unique protection system that permits high instantaneous current to be driven into speaker systems but protects the amplifier from short-circuited or damaged speakers and wires. This protection system in no way limits amplifier output voltage or current during music reproduction, and therefore has no negative effect on sound quality.

Phase correct loudness is an exclusive Harman Kardon feature which provides two major benefits, it can equalize and restore the low frequency response of small loud-speakers, and it can be used in place of conventional loudness contour. But unlike conventional bass boost circuits, Harman Kardon's phase correct loudness also includes a phase correction circuit that maintains clear, natural sound.

Remote control of the amplifier power on/off and volume is provided, as well as many features of Harman Kardon's tuners, cassette decks, dual cassette decks, CD players and carousel CD changers.


Power output: 60 watts per channel into 8Ω (stereo)

Frequency response: 0.5Hz to 150kHz

Damping factor: 65

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

Signal to noise ratio: 76dB (MC), 80dB (MM), 98dB (line)

Dimensions: 443 x 103 x 361mm

Weight: 8kg


instruction/owners manual   English - Smoke Screen

service manual   English - Smoke Screen

service bulletin 9201   English - Swissaudio Uruguay

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Reviewed Oct 07th, 2012 by Smoke Screen

As its predecessors HK6300 and PM645Vxi this
little amp provides not only good connection
diversity and features but also a pleasent clean
sound from all sources. It is tidy build. Complete
discrete with bipolar transistors. No relais for
input/output just oldschool switches. No impene-
trable cable jump. On the other hand the pots used
couldve been of better quality.
Same thing goes for the electrolytic caps. Also
the transformer couldve been less economical.
Like his older brothers this amp wins from a well
thought trough tunup and makes it a real stunner
soundwise. But even as it is its a good amp that
dont need to fear f.e. the smaller Sony ES amps.
They provide more power,but the HK6350 provides
the better sound.



This website is not affiliated with or sponsored by Harman Kardon. To purchase HK6350R spares or accessories, please contact the company via their website or visit an authorised retailer.