Hi everyone! I'm the guy who recorded the samples. @ dj3nk: I absolutely agree with you! When I set out to find a replecement for the 536f, I chose the 945p because the 945 was used in some original 303's, too! In my opinion, this makes it an original part, too. ;) The "p" model was simply the one that came closest to the 536f in terms of hfe-range. @ all: Also, we shouldn't overrate the replacement of the 536f. There are a _lot_ more parts in the analog-section of the x0xb0x than the 24 536f's, and some are a lot more crucial for the sound! Also, to make a _real_ comparison I'd have to take the _same_ x0x and replace all the 536f's with 945p's! Maybe we should remind ourselves that _every_ 303 sounds a bit different! Because the analogue section of the x0xb0x is nearly identical with the 303, this is also true for the x0xb0x. My both x0xb0xes sound different from each other, but I'd never dare to say that one of them sounds bad, and they both got me the sound I was looking for. One cuts a bit better through the mix which makes it perfect for lead-stuff. Especially whenI flick the switch for the resonance boost mod (which hadn't been activated for the recording). The other one sounds a bit warmer to me and has a better square wave, which makes it great for basslines.