Harman Kardon HK870

Solve device problem

Videos (tutorials) Documents (manuals)


Harman/Kardon hk 870 hk 825 Preamp & Power Amplifier

video demo of a harman system.

Harman Kardon The Award Series A 300

A quick repair, cleanup and checkout of the Harman Kardon A300 vacuum tube amplifier.

Youtube Sound Check- Harman Kardon HK870

Just a bit of testing in preparation for my next restoration video.