The XP-12 uses the single stage volume control borrowed from the XS line preamp. This gives us one hundred 1 dB steps with lower noise and distortion while removing some signal path parts.
The gain circuitry continues to use our favorite transistors from Toshiba but has a larger higher biased output stage similar to the XS preamplifier auto bias. This makes longer and multiple cable runs easier to drive and gives us the advantage of simplifying our single ended output circuitry while increasing performance. Overall this makes for a quieter more neutral, musical and versatile control center for your system.