BAT VK-600 vs Pass XA100.5

You're selling not only the Pass XA-100.5 amps, but the Fire preamp, the JC-2 preamp, the ARC Ref 5 preamp and the Audio Valve Eclipse preamp...all of which you tried with the Pass Labs amp, and presumably the BAT VK-600?

Are you sure your speakers are set up properly?

There's nothing wrong with any of the items and I've tried them all with the Bat. I'm not selling them because they sounded 'bad', I bought some of them simply to audition to see if they bettered my current fav.

Some I would prefer to keep (especially the Fire) but cannot afford to at the moment.

It's been a great learning experience and I have now found a combo that works for my taste and my room.

I have now found a combo that works for my taste and my room.
Madfloyd (Threads | Answers | This Thread)

Which is?

Joule Electra LA-150 SE / BAT VK-600 SE

There are some other electronics I'd love to try someday (e.g. BAT preamp, Spectron amps).

Madfloyd, I'm surprised you like the Joule if bass is a top priority.

Yes, you should certainly try a BAT preamp. The Joule will probably have a slightly better midrange. The BAT will have better dynamics and lower frequency definition.