Pass XP-12 with FW F5

well today I moved aside a processor I've been using as a preamp with my F5
In went a 6SN7 buffer, noice! The dynamics suffered a bit in comparison but lower mids & bass were better resolved, tighter and deeper. The upper extremes were cleaner

I use to run a 300cx with a Pass Labs X1 pre, that was oh' so' yummy! Very little of my music collection sounded off, and this is the direction I want for my F5
Whats peoples thoughts on a Pass Labs XP-12 with an F5?
Has anyone used a Pass Labs preamp on their F5, if so I'd appreciate your findings please?

I'd rather buy a preamp as I already have another DIY project in the works.. 3 way 4 driver speakers for which I bought the drivers 15 years ago, Scan Speak & Focal

Thanks AL
 
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