QSC power amp, tested and sounding really great. Perfect for bottom end because of its giant transformer, but excellent sound quality overall.

It has some rack rash, but the face is quite clean.

Here are some details from its data sheet

The MX 1500a is a high power, low profile professional power amplifier with advanced features and a flexible input. It delivers tremendous power in only two rack spaces, providing high level performance under the most demanding conditions. A stepped linear output circuit combines high power with high efficiency to provide greater average and dynamic audio performance, while reducing normal system cooling and AC requirements by greater than 40%. An automatic twospeed fan matches cooling capacity with thermal requirements. The rear panel uses Level 1 of QSC's exclusive Open Input Architecture? which allows the use of optional input connectors, input transformers, cinema crossovers, power limiters, precision attenuators, and other signal processing cards as they become available

• 750 watts per channel at 2 ohms
• 600 watts per channel at 4 ohms -Low profile: Only 2 rack spaces high
• High efficiency, 2-step output circuit for improved thermal performance and lower AC current consumption
• Split secondary configuration: independent power supply on each channel, for greater reliability
• Quiet 2-speed fan Independent DC, sub audio speaker protection & thermal overload protection on each channel
• Open Input Architecture: Level 1 Recessed calibrated front gain controls for easy access & protection from damage
• Patented Output Averaging: shortcircuit protection
• Comprehensive LED status arrays 1/4" RTS and barrier balanced input connectors
• "Touch proof" binding post output connectors