Just tried the Full Circle through my new Countryman DI and it sounds much. Much. Different than what I've been using all these years for a buffer. (Biesele magnetic P/U built-in blender.)
Thru the Countryman, it has a more natural presence with a LOT more low end. The upper freq's seemed almost muted by comparison. But I could feel and hear everything I needed to.
I tried going back to the way it was and couldn't stand it. It seemed "scratchy" and lacking in depth.
I also tried using the 1/4" "amp" output on the DI, which turns out isn't buffered, so that was like going straight to the head. That was also quite a bit different. (Each note had an exaggerated attack that I found disagreeable.)
I've long known about buffering, but this little A/B/C experiment on the gig was a real eye-opener. That Full Circle sure does some very drastic mood swings, depending on what it gets plugged in to first!
It was just an experiment but I think I'm going to keep working with the Countryman (which interfaces quite well with my Markbass amp head - finally found a use for that XLR input). I'll have to dial in the EQ a bit more and we should be good to go.