Description
The Marantz MM7055 is a 5-channel power amplifier delivering 140W per channel at 8 ohms, built with a current feedback discrete amplifier design derived from the Marantz SM-11S1 Hi-Fi amp. It offers balanced and unbalanced inputs on every channel for flexible integration with pre-amplifiers and processors.
Features
- Current feedback discrete amplifier with Wilson current mirror circuit
- Large power transformer with 33,000 μF block condenser for instant power delivery
- Chimney-shaped heat sinks with temperature-controlled cooling fans
- Balanced and unbalanced inputs on every channel
- IR flash input and DC trigger input/output for custom installations
- Remote power on/off sync with compatible Marantz pre-amplifiers
- Gold-plated speaker terminals
- Detachable IEC power cord
Specifications
- Channels: 5
- Power output: 140W per channel at 8 ohms (20 Hz–20 kHz, THD 0.08%, 2ch driven); 170W at 6 ohms
- Frequency response: 8 Hz to 100 kHz (±3dB, 1W, 8 ohms)
- Damping factor: 100
- Input sensitivity: 1.2V/22kΩ (unbalanced); 2.4V/30kΩ (balanced)
- Signal to noise ratio: 105 dB (IHF-A)
- Voltage amplification: 29 dB
- Dimensions (W x H x D): 17.3 x 7.2 x 15.1" / 440 x 183 x 384 mm
- Weight: 34.6 lb / 15.7 kg