Behringer ULTRADI PRO DI4800A 4Channel Active Direct Box

Behringer Ultra-DI PRO DI4000 Professional 4-Channel Active DI-Box Rack Mount

M-Audio DUO USB mic preamp & A/D converter with S/PDIF / WORKS PERFECTLY

M-Audio DMP3 Dual Microphone Preamplifier

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

Behringer VX2496 Ultra-Voice Digital Mic Preamplifier Voice Processor

Alesis Mic Tube Solo Mono Tube Preamp ~ *NO Power-Supply*

ART Tube MP Studio V3 Variable Voiced Tube Mic/Instrument Preamp - NO POWER CBL