Harman Kardon Citation X-I and X-II Matching Preamp and Amplifier - Ve
Harman Kardon Citation 1 Stereophonic Preamplifier Control Center Manual | HiFi Engine
Harman Kardon Citation Twenty-One pre amp — Gig Harbor Audio
Just bought a 1962 Harman/Kardon Galaxy Tube Mixer-Preamp. Does anyone know anything about it? The plan is to restore it and record a DJ mix on it. : r/rotarymixers
Harman Kardon Citation 17 Professional Solid State Preamplifier / Audio Equalizer Manual | HiFi Engine
Harman Kardon Tube Preamplifier for Sale in Santa Clarita, CA - OfferUp
Harman Kardon HK725 Stereo Preamp with Box > Accessories | Rock n Roll Vintage Guitars
Harman Kardon Citation 21 Preamp - electronics - by owner - sale - craigslist