Excellent, true Class-A dual-tube microphone preamp in excellent condition. This preamp has seen very little use--a handful of hours in my smoke-free home studio and one recording session in a professional setting (the engineer was impressed). This unit makes a decent mic sound like a much more expensive piece. Tubes are original with lots of life. Ships in its original box with power supply and manual. Beautiful condition, both functionally and cosmetically. Last I checked, you couldn't get a class-A pre anywhere near this price. Features: Dual vacuum tube performance: Electro-Harmonix 12AY7 preamp tube and 12AU7 output driver tube 50 dB of gain into high impedance load; 40 dB of gain into 600 ohms Full 200 volts plate power supply Balanced XLR in/out 1/4" balanced buffered output with separate volume control 48 volt phantom power switch with soft start Phase reverse switch Low frequency filter switch +4 dBu LED indicator for setting optimal levels $195 shipped (CONUS). Check my feedback or PM with questions.