The Marantz MM7055 is designed to elevate the performance of home theater systems by providing dedicated amplification for up to five channels. Unlike the internal amplifiers found in most AV receivers, the MM7055 uses a robust discrete Class A/B design with Current Feedback technology to deliver greater current capability, improved dynamics, and enhanced speaker control. This results in cleaner dialogue, more impactful soundtracks, and greater musical accuracy across every channel.
Delivering 140 watts per channel into 8 ohms, the MM7055 offers ample power for a wide range of bookshelf, in-wall, and floor-standing speakers. Its oversized EI-core transformer and more than 65,000 µF of custom-designed power supply capacitance provide the energy reserves needed to reproduce demanding movie soundtracks and multichannel music with confidence, authority, and minimal distortion.
System integration is exceptionally flexible thanks to individually selectable balanced XLR and unbalanced RCA inputs for each channel, allowing seamless pairing with Marantz AV processors or other premium surround processors. Additional 12-volt trigger connections and remote control interfaces simplify installation in custom home theater environments, while the aluminum "thermal tunnel" cooling system efficiently dissipates heat for reliable long-term operation.
Combining robust Class A/B amplification, premium construction, and Marantz's signature musical sound, the MM7055 remains an outstanding solution for enthusiasts seeking dedicated multichannel power. Whether used to upgrade an AV receiver or paired with a high-end processor in a separates-based theater, it delivers the headroom, refinement, and reliability needed for an immersive cinematic and musical experience.
- Component type: 5-channel power amplifier
- Amplifier technology: Discrete Class A/B with Current Feedback topology
- Power output: 140 W × 5 into 8 Ω (20 Hz–20 kHz, 0.08% THD)
- Power output (6 Ω): 170 W × 5
- Frequency response: 8 Hz – 100 kHz (±3 dB)
- Total harmonic distortion (THD): 0.03%
- Signal-to-noise ratio: 105 dB
- Damping factor: 100
- Inputs: 5 balanced XLR and 5 unbalanced RCA inputs (individually selectable)
- Speaker terminals: Five heavy-duty gold-plated binding posts
- Power supply: Large-capacity EI-core transformer with over 65,000 µF custom filter capacitors
- Control connections: 12V trigger input/output, Marantz D-Bus remote connection, IR flasher input
- Design features: Aluminum thermal tunnel heat sink, linear drive power supply, rigid chassis construction, premium aluminum front panel, automatic standby mode.