The TB101 "Red Valve" series from SM Pro Audio is a single channel, tube (12AX7) microphone preamp that features switchable phantom power, phase reverse, a -20dB pad, optical compressor and fully functional EQ, all housed in a 1U half-rack desktop enclosure.
Tailored for use in a home or project studio where space is at a premium, the unit is perfectly suited as the front end for a digital audio recorder or workstation, or any other application that requires instrument or microphone preamplification.
Multi-purpose pre-amplifier channel strip for professional and home studio applications
High quality microphone/instrument pre-amplifier
Hand tested 12AX series tube
Switchable phantom power and phase reversal
High quality optical compressors with independent EQ circuitry
Master volume control