The flagship Onix XIA-160 brings a new class of performance from Onix.  Visually, it stands out with a case made of piano black laquered  wood!  It includes such touches as a high quality ALPS "Blue Velvet" potentiometer, 24 karat gold OFC high performance CMC816 RCA terminal sockets and gold plated binding posts to accept spades, banana plugs or bare wire.  Under the hood, you'll find a high quality filtered power supply, Sanken C3264/A1295 power transistors for each channel, 4x10,000uF/80V Nichicon filter capacitors, 4x MUR 8100 ultra fast rectifier diodes, and two independent high efficiency 600VA toroidal transformers.

Along with the XCD-50, it forms a complete front end that gives nothing up to world class cost-no-object systems.  Stereomojo's Marvin Bolden wrote:

"My initial impressions were the very low noise floor make the background dead quiet.  Less noise simply means more music and greater perceived dynamic range. Noise also causes fatigue over time, so what good is a system if after 30 minutes or so you feel like you don't want to listen to it any longer? The highs are clear with no grain or smear.  There was seamless transition from treble to midrange and from midrange to bass. The sound is fast and crisp with a death grip on the bottom end."

Read the full review here