'[...]when triggering several successive accents rapidly enough, the accents build up a bit, i.e. the volume and cut-off frequency are slightly different, while all the knob positions remain exactly the same. This may be a bit counter-intuitive, and imho is an essential part of why the 303 sounds 'alive'. To *very* loosely paraphrase Robin Whittle: if you would poke a chicken in its butt with a stick, it goes "pok!". Do it again a minute or so later, and again, it says "pok!". However, do it quickly two times in a row, and the chicken will be more stressed and go "pok! POK!". Do it three times, and it will go "pok! POK! POOK!!" At some point you will fail to stress the chicken even further, so it would go "pok! POK! POOK!! POOK!! POOK!!". Careful timing to give the chicken a bit of time to recover between successive series of pokes is the key here.'