Environment can play a big role in how your tone sounds. I play in small bars and restaurants. There are times where the room has a good sound I feel like my tone soars. There are others where it sounds completely lifeless. In each case, I'm playing the same gear. If you are playing in a very small room it can have a big bearing.

Also, consider that your tone will sound different in isolation from "in the mix" (whether it be a backing track or in a band). When I get my tone to where it sounds good with the band, it's definitely not how I would have set it up in ilsolation.

It would be an interesting experiment if you could play that Blackstar at home somewhow to see if it's environment that's playing a big role.