I also have the Quilter BB802...sometimes I run the Interbass into the line in, some times not. I really dig both and am hopeful the new Quilter BB803 has that voicing. I tend to favor the Interbass sound as it has that tube flavor and none of the maintenance and weight. At home the Interbass is in my office through 1 2x12 for practice...it's shocking how loud these can get!It looks like you also have a BB800 behind, is it you backup amp?![]()