Test | NE5532 ,Superlux HD 668b | LM4562 ,Superlux HD 668b | MC4558 ,Superlux HD 668b |
Frequency response (from 40 Hz to 15 kHz), dB: | +0.02, -0.03 | +0.02, -0.03 | +0.02, -0.02 |
Noise level, dB (A): | -92.6 | -92.4 | -92.4 |
Dynamic range, dB (A): | 92.6 | 92.4 | 92.5 |
THD, %: | 0.0038 | 0.0039 | 0.076 |
IMD + Noise, %: | 0.012 | 0.013 | 0.082 |
Stereo crosstalk, dB: | -92.0 | -92.7 | -91.2 |