... stereo power amplifier with transistor. Features are Input Gain, Ground Lift Switch to eliminatehum, Power LEDs, Channel 1 & 2 level, LED's ... and handle10) XLR, 1/4 JACK inouts11) Input Gain, Ground Lift Switch to eliminate hum.12) Power LEDs, Channel 1 & 2 level ... overload.14) Ultra-light,ultra-low noise and ultra-efficient switch-mode power supply for noise-free audio, superior transient response ...