Should you turn off the power when swapping tubes?
Seriously - I am looking forward to fooling around with tube replacements a bit one of these days.
I have found some really interesting tones when bridging the channels. Although some people have said this amp works better with humbuckers I am hearing some great stuff with my Strat Deluxe with the SCN single coils. Getting that vintage Strat (Hendrix/Clapton) sound very nicely. Love the bass response on this thing - it works great with the strat.
Honestly for the time being I am more involved with making music with it than tweaking so it might be a while before I even bother. Interesting comment coming from me who never could seem to find that 'lost vintage tone' until now.
Also noting that this amp does some very, very different things with respect to the impedence of the input device. When I split the guitar output to amp and to my board (to record a dry track simultaneously) the gain drops way off. Not surprising - there's still plenty left under the knobs - suddenly that excess gain doesn't seem quite so useless!
This amp does change dramatically depending on what's plugged in front of it - actually delightful when compared with the digital pretender boxes. I am beginning to understand the circuit design more..