Min cutoff and env mod

This mp3 file demonstrates the minimum filter cutoff possible before and after modification.
The pattern plays first on a stock 303, then on a modded unit.
Note that the modded 303 also has a minimum ENV MOD setting of zero - there is always a little modulation on the stock unit.

This mp3 file demonstrates the extended range of ENV MOD on the modded 303.
Stock then modded 303s play the same pattern, with the ENV MOD control swept over its full range.
The modded 303s range includes the whole range of the original, but goes down to zero and up to more than double the unmodded amount.

Bottom end

This mp3 file played on a decent sub shows the difference the bottom end mod makes.
Both 303s play the same pattern, tuned down to minimum pitch.
The extra bass on the modded 303 can be rolled off by a high pass filter on a mixer channel if required, but why would you want to ? ;-)