Harman Kardon 1962 amplifier and tuner renovationmichal.graczyk (25)in #harman • 8 years ago (edited)One of my favorite lamp project : Amplifier: Harman Kardon A 500 lamp amplifier 2x25 W Power output: 25 watts per channel into 8Ω (stereo) Speaker load impedance: 4Ω to 16Ω Valve complement: 4 x 12AX7, 1 x 12AU7, 4 x 7355 Dimensions: 400 x 145 x 320mm Weight: 15kg Before: After: Tuner: Harman Kardon F 50 XK #amplifier #tube #vintage #audio