The back panel has balanced and single-ended inputs for each channel, an IEC power plug port, and five small jacks for control functions, including a 12-volt trigger in/out, flasher input, and remote control in/out. The internal heatsink design keeps the exterior clean and simple. A large cooling tunnel made out of heatsinks draws heat away like a chimney when this approach cannot draw away enough heat, temperature sensors engage variable-speed cooling fans to increase cooling. The MM8077 uses a combination of passive and active cooling techniques. Check out more reviews in our amplifier page at Īll of this power can generate lots of heat, which can damage components unless it is drawn away.Check out our review of the Emotiva UPA-700 amplifier at.In short, the circuit design borrows characteristics from Marantz’s well-regarded stereo amplifiers in an attempt to bring the musicality that Marantz is known for to this modern seven-channel amplifier, which is capable of 150 watts into each channel into eight ohms (180 watts into six ohms). This amplifier borrows other design traits from Marantz’s classic amplifiers, including high-efficiency power transistors that are said to improve transient performance and proprietary “condensers” (capacitors) with 100,000 micro-farads of storage capacity.

The MM8077 utilizes a current feedback design, with complementary push-pull circuits, and a Wilson current mirror, which is said to reduce distortion in the high sound range. A single, large toroidal-transformer-based power supply feeds all seven channels. While not especially heavy at 39 pounds, the MM8077 feels solid due to its construction, which includes a copper-plated chassis with multi-layer top and bottom panels. The design of the MM8077 follows that of the AV8801, with a porthole in the center of the brushed-black front panel and curved sides that make for a clean and attractive style. The MM8077 ($2,399) is designed to complement the new Marantz AV processors, such as the AV8801 that we recently reviewed. The MM8077 is Marantz‘s biggest multi-channel amplifier, with 150 watts of power in each of its seven channels.

Multi channel power amplifier