Nothing working, no lights, no display, no sound. Possible power supply problem but could be more. No returns, sold as is. Thanks for looking.

XLS High Performance, Lightweight Class D amp weighs less than 11 lbs.
•Integrated PureBand™ Crossover System for better performance and control
•Peakx™ Limiters provide maximum output while protecting your speakers
•XLR, 1/4", RCA inputs provide outstanding flexibility
•Efficient forced-air fans prevent excessive thermal buildup
•Electronically balanced XLR inputs; touchproof binding post and Speakon® outputs
•Precision detented level controls, power switch, power LED, and six LEDs which indicate signal, clip and fault for each channel
http://www.crownaudio.com/en/products/xls-2500

2400 W 8 ohm bridge

775 W 4 ohm dual

440 W 8 ohm dual

Has a small chip out of corner of face plate but doesn't affect rack mounting