To me the Blues Breaker pedal reminded me of a Tim. The BB Preamp reminded me of a Maxon SD9.
Really?!? I always thought of the BB as a smooth MSIAB with an active EQ. The SD-9 is a Distortion that creeps into Fuzz at higher gain settings.
It doesn't sound like a bluesbreaker pedal to me at all. I think one side of the AC+ is much closer. I use a CMATMODS Butah for a bluesbreaker pedal sound.