Onkyo PA-MC5500 Power Amplifier
Man. Part No.: PA-MC5500
Onkyo PA-MC5500 Power Amp
A Dedicated Power Amplifier with Finesse and Musicality at Heart
The 9-channel PA-MC5500 is Onkyo’s top-of-the-line power amp, designed to partner a high-end pre-pro such as our recently released PR-SC5507 A/V controller. As an all-analog amplifier, the PA-MC5500 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 unit’s superb engineering standards. In recognition of this, the PA-MC5500 boasts THX Ultra2 certification: the ultimate guarantee of amplification quality.
- 220 W/Ch (6 Ohms, 1 kHz, 1 Channel Driven, IEC)
- WRAT (Wide Range Amplifier Technology)
- Push-Pull Amplification Design with Three-Stage Inverted Darlington Circuitry to Remove Distortion
- All Discrete Output Stage Circuitry
- Massive Toroidal Transformer
- Two Large, Customized, 22,000 µF Capacitors for Effective Power Supply
- Audio-Tuned Reference Capacitors for Each Channel
- Large, Custom-Designed Power Transistors to Drive High Currents
- Low-Impedance, Copper Bus Plates for Perfect Ground Potential
- High-Current, Low-Impedance Circuit Boards with Thick Copper Foil (70 µm)
- Flat, High-Rigidity, Anti-Resonant Chassis
- Gold-Plated XLR Inputs
- Machined Solid Brass RCA Inputs
- Gold-Plated, Color-Coded, Banana Plug-Compatible, Transparent Speaker Posts
- Multi-Zone Capability (up to Zone 3)*
- Bi-Amping Capability*
- 12 V Trigger Input
- Auto Power Down Function
- Aluminum Front Panel
*Depending on A/V Controller
WRAT (Wide Range Amplifier Technology)
The PA-MC5500 employs proprietary Onkyo technologies to ensure optimal audio performance.
Benefit 1: Uncommonly Low Negative-Feedback Design—Get cleaner sounds on program peaks
Although negative feedback (NFB) is a cheap way to reduce noise at lower frequencies, there is a price to pay in terms of audio quality: NFB can severely inhibit an amplifier’s ability both to respond to large signal gains (for example, in a fortissimo passage) and to produce sound at high frequencies. That’s why the PA-MC5500 has a low-NFB design with audiophile-grade, close-tolerance components at critical points in the signal path. This design allows it to achieve a frequency response out to 100 kHz for high-resolution formats such as DVD-Audio and Super Audio CD, as well as for regular CDs, DVDs, and other music sources.
Benefit 2: Closed Ground-Loop Circuits—Enjoy greater maximum volume without distortion
If an amplifier’s ground potential (voltage) fluctuates during playback, noise is likely to result. In an open-loop circuit design, where all circuits are connected to the power supply via a single loop (as on many amplifiers), the noise is compounded. To avoid this, the PA-MC5500 employs a sophisticated closed-circuit design in which each circuit has a separate link to the power supply—this helps to cancel individual circuit noise and keep the ground potential free of distortion.
Benefit 3: HICC (High Instantaneous-Current Capability)—Experience audio with greater dynamics
When an amplifier outputs an audio signal, the connected speakers accumulate energy, reflex, and send energy back to the amplifier. The amplifier must then immediately cancel the speakers’ reflex energy and instantaneously send out the next signal. The same high current required to achieve this is also necessary to handle speaker impedance fluctuations, which can force an amplifier to provide four to six times its usual current load. The PA-MC5500’s instantaneous current capability ensures that audio output is not affected by power limitations.
HICC (High Instantaneous-Current Capability)
In order to handle high levels of instantaneous current, the PA-MC5500 incorporates several key design features.
(1) Push-Pull Amplification Design with Three-Stage Inverted Darlington Circuitry
Found only in high-end amplifiers, this ultra-sensitive circuitry reduces distortion by maintaining voltage stability and enhancing transient response.
(2) Improved Board Design
The PA-MC5500 features an improved board design with short signal pathways to reduce electromagnetic interference. The board is also designed to optimize power delivery to the speaker drivers.
(3) Symmetrical Layout
The amplifier design also incorporates a symmetrical alignment of power devices for each channel. With channels built to be identical in terms of electrical, structural, heat-generating, weight, and electromagnetic characteristics, errors in stereophonic playback are minimized.
All-Analog Circuitry Unaffected by Digital Noise
A standard integrated A/V receiver has the dual task of both processing and amplifying audio signals, and is therefore susceptible to noise interference from digital circuitry. As a dedicated power amp with all-analog circuitry, the PA-MC5500 suffers no such interference. When partnered with a high-quality pre-pro, such as Onkyo’s PR-SC5507, the PA-MC5500 offers all the benefits of pure analog amplification: a warm, musical, and full-bodied sound.
THX® Ultra2™ Certified
When a home theatre 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.
Audiophile Design and Components for High-Power Performance
Like any Onkyo amplifier, the PA-MC5500 is designed to deliver ample power to your speakers, regardless of fluctuations in impedance. What makes the PA-MC5500 our top power amp, though, is the extra attention to parts and construction. A massive toroidal transformer; two 22,000 µF capacitors; large, custom-designed transistors; circuit boards with 70 µm thick copper foi; and low-impedance copper bus plates all work in concert to enhance the power and fidelity of your audio sources. Housed in a highly rigid, anti-resonant steel-plate chassis, the PA-MC5500 also sports audiophile-grade connections: gold-plated XLR inputs; machine-tooled solid brass RCA inputs; and gold-plated, banana plug-compatible speaker posts. From input to output, signal purity is maintained at every stage.
Discrete Output Stage Circuitry to Inhibit Audio Interference
The current that drives loudspeakers is delivered by transistors in the output stage circuitry. Although adding more transistors to the output stage increases the output-current capability, these extra transistors put added strain on the power supply and generate more heat. When the output stage is required to deliver more power than it is capable of, the top and bottom parts of the waveform are flattened or “clipped”. This clipping causes noticeable distortion, even if it occurs only infrequently. The PA-MC5500’s circuit design keeps the transistors separate at the output stage, which means that audio signals are kept free of clipping. Also, with less heat generated, the longevity of the output stage circuitry is enhanced, ensuring that the component stands the test of time.
|Manufacturer's Part No.||PA-MC5500|
|Amplifier Award||5 Star|
|Number of channels||9,2|
|Connections||12v Trigger, 3.5mm Mini-Jack, Analog, Bi-Wire, DIN, Headphone, Headphones, Multi-Channel Output, XLR|
|Features||Bi-Wire, WRAT (Wide Range Amplifier Technology|
|Virtual Surround Sound||No|
|Colour Output (Lumen)||No|
|Amplifier Dimensions||(WxHxD): 435 x 198.5 x 458.5 mm|
|Number of Drivers||N/A|
|Type of Finish||No|
£2,499.00 inc vat
Finance options* to help you afford the product you want!
If your order value is £389.00 or over you will be given the option to buy on finance when you reach the checkout.
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Who is the finance agreement with?
The finance agreement is with Hitachi Consumer Credit, one of the largest money lenders in the UK.
*Finance is available to UK applicants 18 years of age or older and subject to status. Finance is not available for business customers. Prices are correct at time of going to press and are subject to change during the term of this offer without notice. Terms and conditions are available on request. Finance agreements are available on orders between £389 and £10,000 (including VAT and shipping). Please ensure you are able to keep up repayments of any finance package taken.
Now Group UK Ltd trading as Exceptional AV operates under a Consumer Credit Licence, No. 560813.
This licence is issued by The Director General of Fair Trading at the Office of Fair Trading in accordance with the Consumer Credit Act 1974.