Car Stereo Graphic Equalizer Booster Ampl/Mixer Pioneer Corporation; | Radiomuseum
pioneer AD-50 equalizer booster...distorted/garalgal ok na one channel...waiting for parts to completely fix the other channel no need to convert to IC... | By Pioneer Kp-500 Tp-900 Vintage Car Stereo | Facebook
PIONEER AD-50 GRAPHIC EQUALIZER BOOSTER ULTIMATE HIGH END 80s | eBay
PIONEER KP-500.PIONEER AD-50-NIKO - YouTube
Pioneer AD-50 equalizer booster now working...used to be distorted (garalgal) both channels am only using test speakers, don't expect much fidelity from... | By Pioneer Kp-500 Tp-900 Vintage Car Stereo | Facebook