MEASUREMENTS
Jan 04, 2022
2 minutes
– John Atkinson
I measured the Topping Pre90’s performance with my Audio Precision SYS2722 system (see the January 2008 As We See It1), repeating some tests with the magazine’s higher-performance APx555 system.
The Pre90’s volume control operated in accurate 0.5dB steps. The maximum gain at the unbalanced outputs was the specified 10dB for both the balanced and unbalanced inputs; the maximum gain at the balanced outputs was the specified
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