Is there any preferance for which kind of buffers for this one? FET (Polyfusion, Roland 100m), OP-Amp (Roland 700, Electronotes) , etc.... (Darlington from 13600 in the Jen SX-1000) mark Gene Stopp wrote: > >Electronotes 4-pole 3080 integrator lowpass (also seen in Polyfusion and >Roland 700) > >