The Audio Research 150.2 is a Class-T digital power amplifier with a Tripath module, delivering 150 watts per channel (Wpc) into 8 ohms and 300 Wpc into 4 ohms at 0.1% THD, featuring both balanced and single-ended inputs, a balanced design, and a low-heat, high-efficiency Class-T switching technology for a 1.2MHz to 200kHz operating frequency range. 

General Specifications 
Product Type: Stereo Power Amplifier
Manufacturer: Audio Research
Technology: Class-T Digital Amplifier
Inputs: Balanced (XLR) and Single-Ended (RCA)
Outputs: Speaker outputs for matched loads
Special Features: High efficiency, low heat output, 12V trigger, balanced design

Performance
Power Output: 150 Wpc into 8 ohms; 300 Wpc into 4 ohms 
Total Harmonic Distortion (THD): 0.1% at rated output 
Design: Balanced design with a single-ended push-pull output 
Heat Output: Low heat generation due to the high-efficiency Class-T technology 

Technical Details 
Amplifier Module: Tripath Module (used for its Digital Power Processing)
Operating Frequency: Modulates switching frequency anywhere from 1.2MHz to 200kHz
Purity: High signal fidelity due to Tripath's proprietary Digital Power Processing (DPP)
In summary, the Audio Research 150.2 stands out for its high power output, excellent efficiency, and low heat production, making it a versatile and reliable option for high-fidelity audio systems.