MARANTZ SA/PM-KI PEARL (£2500 ea)

摘要

The SA-KI Pearl is every inch the modern SACD player and even comes with two digital filter options. The first offers a limited 26.8dB attenuation of stopband images with CD but with a reduced in-band group delay over filter 2 with its superior 102dB attenuation. Neither option has any impact over the miniscule -0.25dB/20kHz treble roll-off, the 108.5dB A-wtd S/N ratio or low 0.0008% distortion at 20kHz, all of which are determined by Marantz's HDAM output op-amps. The two filters do have a bigger effect with SACD however, adding an extra pole around 50-60kHz to reduce any ultrasonic re-quantisation noise by about 30dB at 100kHz, relative to filter 1. Of course, filter 1 also offers the flatter and more extended SACD response, just -9.8dB at 80kHz versus -27.5dB with filter 2. Filter 1 will be the choice when partnered with amplifiers like the PM-KI Pearl that are fundamentally insensitive to ultrasonic noise.