Emotiva XPA-5 5 Channel power aplifier

GEN 3
Circuit Topology
The XPA-5 Gen3 is a fully modular audio power amplifier with a high-efficiency switch mode power supply (SMPS), independent, fully discrete, dual differential, high current, short signal path Class A/B amplifier modules, Optimized Class H™ power supply topology, and microprocessor-controlled fault protection.
The XPA-5 is powered by a high efficiency, audiophile grade, Switch Mode Power Supply (SMPS).
Audio Specifications
The XPA-5 Gen3 features five of our High-Powered Single Channel Modules.  
Audio Specifications (Five High-Powered Single Channel Modules):
Power Output:
• 300 watts RMS/channel; 20 Hz – 20 kHz; THD<0.1%; 8 Ohms; one channel driven
• 550 watts RMS/channel; 20 Hz – 20 kHz; THD<0.2%; 4 Ohms; one channel driven
• 300 watts RMS/channel; THD<0.1%; 8 Ohms; two channels driven
• 490 watts RMS/channel; THD<0.1%; 4 Ohms; two channels driven
• 250 watts RMS/channel; THD<0.1%; 8 Ohms; ALL FIVE channels driven