Review of Pass Labs Xs 150 Monoblock Amplifiers

In reviewing the Pass Labs Xs 150 Monoblock Amplifiers, Fred Crowder writes:

The speed of delivery for instruments and voices is stunning.  There is no hint of any distortion or noise.  Nothing in the musical presentation takes away from any other element.  The air, space, depth and apparent room ambience of the recording are palpable.  Each instrument has its own dynamic envelope which allows a pianissimo strike of a triangle to exist alongside a forte gong crash, with each instrument perfectly distinguished, each part of the musical whole, but also being appreciated as their own notes.  The amps rendered it effortlessly.   I cannot imagine that I would ever want more power.  The stage is three-dimensional, images are stable and placed believably on that stage, each surrounded by its own cushion of air.  Bass is powerful and at the same time taut, articulate and well controlled.  With my speakers, which each employ four 10-inch dynamic drivers to reproduce the range below 170 Hz —  there appears with these amps to be an extra half octave of extension at the bottom.  Noise is vanishingly low, grain is for all practical purposes non-existent.  Most importantly, these are musically natural and emotionally satisfying.

Read the full review of the Pass Labs Xs 150 Monoblocks on the Dagogo.com audiophile review web site.