Pass Labs Xs preamplifier VS. XP-30


I understand their price difference is big. But I want to know their sonic difference.

BTW, I want to know if it is a good idea to use Xs preamp to match X.5 series power-amp.

Fianlly, any good reviews on Xs preamp?

Please advice. Thank you!
believer
Hi everyone,

(1) will the adjustable output gain control (Slave Main output) degrade the quality of sound when using bi-amping configuration?

(because there is one more "volume control" on the signal path)

(2) Is there any difference between the volume control and output gain control of these two preamps.?

Does anyone know that?

thank you!
Anymore thoughts on XS Preamp, XP30 or XP32 ?
Also comparison to ARC, VAC or Luxman preamps?