TMP-1 preamplifier is a professional quality audio single channel Mic preamp come with 12AX7 tube to add warmth to musical dynamics that lets you connect microphone, instrument, and line level signals to a mixer or other audio input. The new ultra low noise discrete microphone preamp front end has an extremely flat and wide frequency response and handles a wide range of input signal levels with a minimum of coloration. This gives you a very clean and neutral sound with a wide variety of signal sources. The high impedance 1⁄4-inch instrument input bypasses the microphone preamp circuitry to maintain a clean signal path.