I am selling this item to organize my equipment. It is in perfect working order, and the manual, etc. are also kept in good condition. I have protected it with resin nuts to prevent rack marks. This is a preamplifier with excellent performance to begin with, but this particular unit has excellent left and right channel matching. *Please see the photos for the measurement results from Plugin Doctor. Included are the main unit, the B2T power supply unit and cable, and the manual.