“ ... Pass Labs’ new Xs Preamplifier is the flagship complement to the Xs-300 and Xs-150 amplifiers ... It applies lessons learnt from the XP-30 3-chassis reference and Xs amplifiers. ...Xs Preamp is quieter than the XP-30 and has an even more improved power supply ... two large chassis with true dual-mono topology ... materials sourced from the military and high-speed computer sectors ... each channel’s power supply with 100,000uF capacitance is optimized for low noise ... newly available silicon-carbide transistors drop noise below the XP-30... high-bias class A gain stages employ a direct-coupled ultra-symmetric path, auto bias and DC compensation ... extra large high-definition dimmable 20-character display is easy to read ... includes 6 inputs, a tape loop, dual-power input connections, dual balanced outputs and variable outputs for bi-amping and use with multi-room systems.”