Onkyo PA-MC5501 9-Channel THX Ultra2 Home Theater Power Amplifier, 5 Hz to 100 kHz Frequency Response, 110 dB Signal-to-Noise Ratio

Combining dynamic response with excellent clarity, the Onkyo PA-MC5501 9-Channel THX Ultra2 Home Theater Power Amplifier delivers an enveloping and immersive home theater experience. This THX Ultra2 certified powerhouse employs the WRAT (Wide Range Amplifier Technology) that minimizes distortion with its closed ground-loop circuit design. The unique push-pull amplification design with 3-stage inverted Darlington circuitry works to keep distortion at minimum by stabilizing voltage and delivering high quality output.

The PA-MC5501 features a large toroidal transformer, two 22,000 uF capacitors, large custom-designed transistors, circuit boards with 70um-thick copper foil and low-impedance copper bus plates that help deliver a brilliant acoustic performance even during fluctuations in impedance. Its innovative board design overcomes electromagnetic interference by short signal pathways and optimizes power delivery to the speaker drivers. Plus, the symmetrical layout ensures the alignment of power devices for each channel thereby also minimizing errors in stereophonic playback.