I'm considering upgrading my PASS X2.5 Preamp. to the new XP-10. Has anyone made this upgrade? Would it be more cost effective to upgrade into the X1? Would the sonic differences between the X2.5 and X1 be negligible in my System?
System: Krell SACD Standard MKII PASS X2.5 PASS X250.5 Wilson Audio Sophia
Jebsmith73: The Sophias are quite efficient, with most of my listening the X250.5 is in Class A mode (meter steady). I'm leaning more towards upgrading into a PASS XA.5 Amplifier(s), in the future. This System is very powerful, detailed and smooth, with excellent micro-dynamics/low-level detail.