MEASUREMENTS
May 14, 2019
2 minutes
—John Atkinson
measured the Pass Laboratories XP-22’s performance with my Audio Precision SYS2722 system (see the January 2008 “As We See It”). The maximum gain was the specified 9.5dB for the balanced inputs to the balanced outputs, but 6.07dB from the unbalanced input to the unbalanced output, the latter result 3dB higher than the specified gain. The preamplifier preserved absolute polarity (, was non-inverting) with both balanced and unbalanced inputs and outputs. (Its XLR jacks are wired with pin 2 hot, the AES convention.)
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