Features

11ch Power Amplifier: Combined with Yamaha's Aventage CX-A5000 11.2 channel preamplifier (022CXA5000, sold separately), the Yamaha Aventage MX-A5000 11 channel power amplifier delivers superb sound quality and ensures an unequalled listening experience. The MX-A5000 discrete structured 11 channel power amplifier delivers and enormous amount of power for superior performance on all channels. The MX-A500 also features a highly rigid chassis design, high-quality internal parts, balanced inputs, and heavy-duty speaker outputs for optimum sound quality and reliability.

• Symmetrical Power Amplifier Layout: The interior of the power amplifier has been precisely planned, circuit-routed and built so that the left and right channels are physically and electrically isolated. This naturally maximizes channel separation, but also greatly improves signal to noise ratio and also helps to achieve a wide, open sound stage.
• Current Feedback Amp + 3-Stage Darlington Circuitry: The MX-A5000 uses a current feedback power amp with a three stage Darlington circuit that has superior phase properties and is resistant to speaker impedance fluctuation. To fully realize its inherent power, it uses high quality parts with superior sound quality that were strictly selected based on listening tests.
• Power Rating: The Yamaha MX-A5000 is equipped with a 11 channel amplifier rated at 150 watts (into 8-ohms, at 20-20kHz, with 0.06% THD, driving 2 channels) which provides high dynamic power with low-impedance drive capability.

Flexible Amplifier Configuration: The MX-A5000 power amp and CX-A5000 preamplifier (sold separately) are designed to allow flexible system configuration. Complementing their 11 channel output that maximizes Cinema DSP HD3 performance and makes the most of the capabilities of your speakers; they also support bi-amping for driving tweeter and woofer with separate amps, and A/B speaker configuration. Furthermore, they allow bi-amping of all five channels using the 11 internal channels. Extra amplifiers can be used to power multiple zones in addition to the main room, letting you configure your system for music play in a bedroom or kitchen. On the MX-A5000, you can switch all 11 channel input jacks back and forth between balanced and unbalanced for each channel, further increasing system flexibility.

Highly Rigid Chassis: The Yamaha Aventage MX-A5000 employs an advanced chassis with strong rigidity. Its chassis stiffness is enhanced by an H-shaped cross frame that boosts mechanical strength, by adopting aluminum side panels that increase the stiffness of the housing and by a three-ply structure with independent top cover and side panels. Any external vibration from the rack or other sources is damped by heavy insulators. The A.R.T. (Anti-Resonance Technology) Wedge in the center of the bottom cover acts as an additional vibration countermeasure and firmly supports the internal circuits and delicate parts. In addition, the MX-A5000 has a double bottom, consisting of vibration control plates made of 1/8" thick black steel. In order to support the heavy heat sinks and other parts, it has a left-right independent construction strengthened by a rigid-frame structure. The bottom frame reduces the transmission of vibration produced by the large power supply transformer and heat sinks. It also incorporates a heavy insulator that blocks external vibration.

Robust Power Supply: The power supply transformer is a specially developed high output, high efficiency, large size toroidal transformer. With two specially developed high capacity (27,000μF) block capacitors, it minimizes energy loss and features power supply capacity with generous headroom. This ensures sound capable of superior musical expression.

Balanced Connectivity: Electrical noise may be generated due to connection with other AV components and even to the connection between them, as well as from other sources of external noise. To ensure that the MX-A5000 and CX-A5000 are not affected by this distortion, 11 balanced connections that are highly noise resistant were used, the same type generally used in pro audio equipment. Even the 11 RCA unbalanced connection uses a ground sensing transmission method that achieves simple balanced transmission. And in cases such as that where each channel with the XLR is used selectively, the impact of noise flowing between the preamp and the chassis of the power amp is removed, minimizing sound quality deterioration due to the connection.

Gold-Plated Binding Post Speaker Terminals: The speaker output terminals are high quality gold-plated types and are compatible with bare wire (up to 8AWG), pin-connectors, spade-connectors, and banana plugs (single only) for optimum speaker connectivity. The impedance selector on the rear panel of the MX-A5000 matches amplifier output current to various speaker impedances (4-, 6, or 8-ohm). There are twenty six speaker terminals; CH.1 (+/-), CH.2 A&B L/R (+/-), CH.3 L/R (+/-), CH.4 L/R (+/-), CH.5 L/R (+/-), and CH.6 L/R (+/-).

Trigger Input/Output: The trigger function allows automatic power synchronization with other components that support this function. Connecting a preamplifier, for example, to the "Trigger In" jack turns the power on and off together with the preamp. Connecting another component such as a subwoofer to the "Trigger Out" jack syncs the power of that component to the MX-A5000. In addition, the input from the "Trigger In" jack can be output in a cascade connection to control the power of another component such as another power amplifier.

Auto Power Standby: The MX-A5000 has an Auto Power Standby function that will turn the power off after eight hours. It can be turned on and off via a rear panel switch and will be overridden by the trigger function.