When Pass Labs comes out with a new piece of gear the audio industry takes notice. Well known for the quality of its products, the longevity of its designs and the seriousness to which it addresses the ever evolving science and art of sound reproduction, the XP-12 Preamplifier arrives. The XP-12 is the replacement for the XP-10, which had been their entry level, reference, one-box line level preamp for nearly a decade. What have they done to improve performance?
The new XP-12 starts with a new power supply. It uses an efficient toroidal design with both an electrostatic and Mu metal shield along vacuum impregnating and epoxy fill. This makes a very quiet transformer both electrically and mechanically. The power supply circuitry is also quieter and has additional filtering. The XP-12 uses a single stage volume control borrowed from the XS line preamp. This gives one hundred 1 dB steps with lower noise and distortion while removing some signal path parts. This redesigned volume control results in greater precision with a more luxurious feel.