The picture in "Future Music" that you mention with the 303
in it, would probably more likely be the 606 that Autechre own.
I mean, the 303 and 606 look practically the same anyway.
The closest sounding to a 303 Autechre have sounded
would be Windwind from the Incanabula album. But
I reckon that's probably the 202.
my 2 cents worth
piece
Florian
dachut@syds01.isc.gov.au