Mark Levinson No.383 integrated amplifier Measurements part 2
Fig.4 Mark Levinson No.383, THD+noise (%) vs frequency at (from top to bottom at 4kHz): 4W into 2 ohms; 2.83V into simulated loudspeaker load; 2W into 4 ohms; and 1W into 8 ohms (right channel dashed).
Fig.5 Mark Levinson No.383, 1kHz waveform at 12.5W into 8 ohms (top), distortion and noise waveform with fundamental notched out (bottom, not to scale).
Fig.6 Mark Levinson No.383, spectrum of 50Hz sinewave, DC-1kHz, at 145W into 4 ohms (linear frequency scale).
Fig.7 Mark Levinson No.383, HF intermodulation spectrum, DC-22kHz, 19+20kHz at 120W into 4 ohms (linear frequency scale).