X600.8

About the X600.8

The Pass Labs X-600 monoblock amplifier is a robust solid state power amplifier rated at 600 watts into 8 ohms with 1% THD at 1 kHz. It features a fully balanced circuit from input to output, accepts only balanced inputs, and operates in pure class A up to 170 watts before transitioning to class AB. The amplifier uses power MOSFETs (Hexfets) and has a DC-coupled signal path with no capacitors in the signal path, ensuring low distortion and noise. It includes a separate smaller transformer for the front end circuit to reduce ripple voltage and improve performance. The X-600 weighs approximately 150 lbs and measures 19" W x 22" D x 11.5" H. It has a damping factor of 60, input impedance of 22 kohms balanced, and a slew rate of approximately ±50 V/µs. Power consumption is about 600 watts at idle and up to 1800 watts maximum. The amplifier is known for its fast, timbrically correct sound with a slightly dry character, and it is highly regarded for its build quality and sonic performance.