8/10 condition with no noticeable signs of damage or abuse and could rate as a 9 in most cases.  All inputs have been tested and the unit is sonically perfect.  

 

For consumers with expansive home theaters who want an unsurpassed and even more powerful reference-standard audio processing section, the MX151 is literally without equal. In addition to providing the purest, most realistic audio experience possible from all of todays content sources, with the most advanced on-board RoomPerfect auto-equalization, it includes assignable balanced input and outputs and a dedicated analog phono section, as well as precision-tuned bass and treble tone controls. The MX151 also features a leading edge video processing engine with HDMI 3D
Pass Through capability, as well as Dolby TrueHD and DTS-HD Master Audio.

The MX151 carries on the McIntosh tradition of sonic excellence with exceedingly low noise and distortion performance. Two balanced inputs combine with balanced outputs and a differential balanced audio topology to offer superb low-level linearity. Coaxial and optical digital audio inputs are also provided. An on-screen user interface is menu-driven and intuitive for ease of system set up. An RS232 input offers compatibility with third party remote control systems while McIntosh Power Control Ports enable both units to control an entire McIntosh system from a single hand-held remote.