M-Audio MIDIMAN AUDIO BUDDY Dual Mic Preamp/ Direct Box DI - UNTESTED

PreSonus TubePre V1 Stereo Mic Preamp (1st Generation) Untested

PreSonus Two Channel Discrete Dual Servo Mic Preamp MP20 - Rack Mounted

Langevin Dual Mono Mic Preamp w/ Power Cable – Tested & Working

M-Audio Audio Buddy Dual Channel Mic Preamp Direct Box Phantom Power XLR/TRS

Midiman Audio Buddy 2 Channel Microphone Mic Preamp & Direct Box Phantom Power

Groove Tubes The Brick Tube Mic Preamp di Box

Microphone Preamp Audio Booster, Professional Mic Booster Activator Preamplif...