TECHNICS SL-P1200

摘要

Unlike Technics' first-generation SL-P10 [Vintage Review, HFN Oct '12], which employed a single time-shared 16-bit DAC with no oversampling, this huge SL-P1200 boasts two (mono) PCM54HP DACs from Burr-Brown along with 2x oversampling and less aggressive analogue filtering. As a result its frequency response, flat to within +0.02/-0.08dB from 20Hz-20kHz and enjoying greatly reduced in-band ripple, is far closer in appearance to that from a modern player. The impulse response shows the familiar pre/post echoes of an FIR filter although, in this instance, also reveals that the player's analogue output is phase-inverting. Interestingly, the analogue filtering also suppresses ultrasonic distortion harmonics so that THD at 20kHz is lower than that through the midrange below -10dBFs [0.00256 vs. 0.005%, see Graph 1, below].