Here's a good, solid, well engineered power amplifier from Crown, one of the most respected names in the business. This unit has been fully tested, driven fairly hard for several hours with a 4 ohm load on each channel....no issues whatsoever, 100 % ready to rock. 2 rack space design, binding post and Speakon outputs, fan cooled, case has typical scratches but no abuse or major damage. Quiet, clean power.....stereo mode specs: 570w @ 2 - 400w @ 4 - 260w @ 8....bridge mode: 1,140w @ 4 - 800w @ 8. Detachable power cable.