MEASUREMENTS

I measured the PS Audio Stellar Phono phono preamplifier using my Audio Precision SYS2722 system (see the January 2008 “As We See It”¹). For logistical reasons, I tested a different sample (serial number SPH-B-9J0100) from that auditioned by Michael Fremer. To get the lowest measured noise, I floated the signal generator’s unbalanced output from ground and ran a separate connection from the analyzer’s ground to the grounding post on the preamplifier’s rear panel

PS Audio specifies the voltage gain for the moving-magnet input as Low (44dB), Medium (50dB), or High (56dB), depending on the setting selected