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About the 331
The Mark Levinson 331 is a dual monaural solid-state stereo power amplifier designed for high-fidelity audio systems. It delivers a minimum of 100 watts per channel continuous into 8 ohms, doubling to 200 watts into 4 ohms and 400 watts into 2 ohms. The amplifier features a frequency response of 20Hz to 20kHz, total harmonic distortion of 0.5%, and a damping factor greater than 800 into 8 ohms. It has a voltage gain of 26.8 dB, input sensitivity of 1.3V for full output, and a signal-to-noise ratio of 80 dB. It supports balanced XLR and single-ended RCA inputs and includes adaptive biasing, extensive protection circuits, and remote turn-on capabilities.
Specifications
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