The Benchmark DAC3-L Reference DAC and Stereo Preamp (Silver) features an ES9028PRO Converter Chip and quad 32-bit balanced D/A conversion. It includes hybrid gain control technology. The device has a sampling frequency of 44.1 to 96 kHz, with a bandwidth of 20 Hz to 20 kHz. The signal to noise ratio is 128 dB A-weighted and 126 dB unweighted. The dynamic range is 128 dB A-weighted and 126 dB unweighted. Total harmonic distortion/noise measurements are provided at various frequencies and volumes. Frequency response data is specified for different sample rates. Crosstalk levels are indicated at specific frequencies. Maximum amplitude parameters include jitter induced sidebands, spurious tones, idle tones, and AC line related hum and noise. Inter-channel differential phase is ±0.25° at 20 kHz. Maximum lock time after frequency change is 6 ms. Soft mute has a ramp up/down time of 9.6 ms. Mute functions are available on receive error, lock error, and idle channel. De-emphasis is supported with automatic enable in consumer mode.
- Sampling Frequency: Fs = 44.1 to 96 kHz, 20 Hz to 20 kHz BW, 1 kHz test tone, 0 dBFS = +24 dBu (unless noted)
- Signal to Noise Ratio: A-Weighted, 0 dBFS = +27 dBu: 128 dB Unweighted, 0 dBFS = +27 dBu: 126 dB
- Dynamic Range: A-Weighted at Maximum Volume: 128 dB Unweighted at Maximum Volume: 126 dB
- Total Harmonic Distortion/Noise: 1 kHz at 0 dBFS: -113 dBFS, -113 dB, 0.00022% 1 kHz at -1 dBFS: -114 dBFS, -113 dB, 0.00022% 1 kHz at -3 dBFS: -119 dBFS, -116 dB, 0.00016% 20 Hz to 20 kHz Sweep at -3 dBFS: -113 dBFS, -110 dB, 0.00032%
- Frequency Response: Fs= 192 kHz: +0 dB, -0.015 dB (20 Hz to 20 kHz) -0.015 dB at 10 Hz -0.005 dB at 20 kHz -0.031 dB at 40 kHz -0.15 dB at 80 kHz Fs= 48 kHz: +0 dB, -0.015 dB (20 Hz to 20 kHz) -0.015 dB at 10 Hz -0.005 dB at 20 kHz
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