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A Dedicated Power Amplifier with Finesse and Musicality at Heart

The 9-channel PA-MC5501 is Onkyo’s top-of-the-line power amp, designed to partner a high-end pre-pro of your choice. As an all-analog amplifier, the PA-MC5501 is built to deliver powerful, well-balanced amplification free from digital noise interference. The precise, high-power performance comes courtesy of components and design features that will impress even the most demanding audiophile. Onkyo’s trusted WRAT amplifier philosophy ensures low negative feedback and high instantaneous current capability. Meanwhile, customized capacitors, large transistors, gold-plated terminals, and a massive toroidal transformer exemplify the units superb engineering standards. In recognition of this, the PA-MC5501 boasts THX® Ultra2™ certification: the ultimate guarantee of amplification quality.

THX® Ultra2 Certified

When a home theater component receives THX certification, it is your guarantee that it will accurately present movies the way they were mixed by the filmmaker in the studio. In the case of THX Ultra2 certification, the ultimate benchmark for home audio performance, a power amplifier must offer high-quality, high-output performance for multi-channel playback in large rooms. Among the strict criteria that THX uses for judging the quality of a power amplifier are measurements of continuous power output, distortion levels, and heat generation.




Shop all products ONKYO, including ONKYO Receivers, ONKYO Amplifiers and much more. RIO Sound and Vision stock the largest range of ONKYO products, available in-store and online. Free delivery Australia wide. ONKYO products provide high quality products for your home theatre or surround sound system. All of RIO Sound and Vision's products come with a full Australian 3 year warranty. As the largest ONKYO dealer in Australia, with over 25 years in the Vision and HiFi industry, RIO Sound and Vision can tailor your new ONKYO system with ease and affordability.

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Price Bracket



Power OutputFront L/R: 280 W/Ch
(6 Ω, 1 kHz, 1 channel driven, JEITA)
Center: 280 W (6 Ω, 1 kHz, 1 channel driven, JEITA)
Surround L/R: 280 W/Ch
(6 Ω, 1 kHz, 1 channel driven, JEITA)
Surround Back L/R: 280 W/Ch
(6 Ω, 1 kHz, 1 channel driven, JEITA)
Front Wide L/R or Front High L/R: 280 W/Ch
(6 Ω, 1 kHz, 1 channel driven, JEITA)
Dynamic Power400 W (3 Ω, Front)
300 W (4 Ω, Front)
180 W (8 Ω, Front)
THD (Total Harmonic Distortion)0.05% (20 Hz–20 kHz, Rated power)
Damping Factor60 (Front, 1 kHz, 8 Ω)
Input Sensitivity and Impedance1 V/47 kΩ (Balanced)
2 V/22 kΩ (Unbalanced)
Frequency Response5 Hz–100 kHz/+1 dB, -3 dB
Signal-to-Noise Ratio110 dB (Unbalanced, IHF-A)
Speaker Impedance4 Ω–16 Ω or 6 Ω–16 Ω
Power SupplyAC 220–240 V~, 50/60 Hz
Power Consumption1,050 W
Standby Power Consumption0.3 W
Dimensions (W x H x D)435 x 198.5 x 446.5 mm
Weight22.2 kg
Supplied Accessories• Power cord (Plug type depends on region)
• Mono mini-plug cable for 12 V trigger terminals
• Speaker cable labels • Instruction manual


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