I have to say, this unit with it's mods, is much better value than any real 303. It does quite a bit for the money. And it sounds pretty close to me, with the high beta transistors mine has, and the Power Supply unit mod.
I've had quite a few mods done to it.
visually the LEDS have been changed - I tried to get all of em to show, which it does sometimes on power up. But I get different combo of LEDS coming on each time
Anyone have this as well?
The back panel shows some of the mods - the top part of the back.
Left to right -
1) on/off switch added
2) hole to adjust the trimpot for the power supply warble mod. Goes from stock to 220R. Set in the middle it sounds closest to a 303. Left in stock it sounds a bit closer, edgey, and tighter, resonance not as nice. Set to the extreme, the sounds go more rubbery and mellow, the resonance band gets more noticeable/wider like a Juno 106....
3) switch to turn on/off the envelope modulation extra range. Very handy, you can do some sounds you can't get on a normal 303.
4) empty switch, didn't end up using it to switch a mod
5) turns the VCO on/off. Very useful for the filter input mod
6) jack for the filter input - very handy for filtering stuff, that you sequence over CV/Gate to add the accent and 303 vibe. Or just filter patterns when running the sequencer without the VCO etc
Mods that you can't see -
1) Bass boost - drop the high pass filter down an ocatve. Hmm sounds much thicker, gives my Minimoog and Sh2 a run for the bass money
2) High beta transitors for the VCO and Filter
3) allow the Env mod to be set to zero
4) wider filter cutoff range, goes from subsonic to near ultrasonic now
I'll have some audio clips next to show off some of the mods and what my Minimoog and SH2 sound like when sequenced over CV/Gate by it, and then run through the filter input!
