so I've been doing experimentation with a 303/909 emulation using Reason and a trigger finger to launch patterns/twist knobs.
I've posted a few times about two combinator 303 emulations posted up on the Reason forums, but last night I dropped in Peff's RB-333 refill combinator as a test. This is the refill that peff dropped so you could emulate the ReBirth sound inside reason easily, namely by using samples. I don't know much about the real sound of acid other than old records, and I dont have $1200 to spend on a vintage TB-303..but I will say that Peff's RB-333 refill screams and provides significant more audio pleasure than the Thor-based emulations do. Don't get me wrong, the Thor emu's are nice, but not as nice as that rebirth sound!