SONY HAP-Z1ES/TA-A1ES

摘要

Tested with DSEE and volume normalisation switched off, the HAP-Z1 ES's upsampling to 5.6MHz DSD means the swell of ultrasonic requantisation noise normally associated with 2.8MHz SACD is much reduced (+25dB between 20kHz and 100kHz). This is consistent with incoming media sample rates from 44.1 kHz to 192kHz as is the low 0.0001 -0.003% peak level distortion [slightly higher on the right channel - see Graph 1 ], the 109.5dB A-wtd S/N ratio and vanishingly low jitter of just 10-20psec. Frequency responses are exceeding flat - to within ±0.01dB from 20Hz-20kHz with 44.1/48kHz media, +0.0/-0.1dB to 42kHz with 96kHz media (and a steep rolloff thereafter) and -4.7dB/90kHz with 192kHz files.