This is a 200 watt-per-channel stereo amp (min. 25w Class A). Is a hybrid design that uses both tubes (12AT7, 12AX7, 4-6KG6) and transistors. Great sound, tremendous power, can drive difficult loads . Mute switch, detachable A/C cord, black front, 5-way binding posts, front rack handles, auto-biasing, high current design, high dampening factor, minimum 3dB headroom. Very clean and detailed sound.