Nady TMP-1 Mono Tube Microphone Preamp Professional feature-packed tube microphone preamplifiers, both in single space rack (1RU) housings, the TMP-1 is the perfect tool for a host of recording applications, including use as either mic preamps or an instrument direct boxes for acoustic and bass guitars, or keyboards and synthesizers. The TMP-1 is a mono tube preamp. Hand selected 12AX7A vacuum tube circuitry provides a big, warm sound for microphones and instruments that will perfectly fill out your sound for recording Selectable output limiter circuitry to protect connected equipment such as processors Convenient analog VU meter allows excellent control of desired signal levels and also monitors the limiter function when the limiter is activated Variable Input and Output Gain Controls with over 60 dB of available gain +48 Phantom Power Switch Phase Reversal Switch Servo-balanced XLR and unbalanced 1/4" TS Inputs and Outputs Rugged construction for maximum long term reliability Shielded internal dual regulated power supply with ~115V(60Hz)/~230V(50Hz) select switch and fused IEC power cord connector