a/d/s SC4 Multizone Audio Video A/V System Preamp. Tested

M-Audio Octane 8 Channel Preamp A/D Converter incl. Pwr Supply

Vintage Threshold SL10 Audiophile Preamplifier Designed by Nelson Pass

Nikko Pre Amp Beta II Stereo Control Preamplifier

Rotel RSP-1066 Surround Sound Processor - Silver - Pre-Amp Home Theater + Tested

Emotiva Stealth DC-1 DAC

SONY TA-E741 Dolby ProLogic 5.1 Surround & HiFi Stereo PreAmp w/built in EQ

Cambridge Audio Alva Solo | Phono Preamp for Moving Magnet Turntable