The band-pass itself is constructed from a high pass and a low pass filter. [Ryan] used simple ... would quickly attenuate [Ryan’s] input signal, so each stage uses two op-amps.

Coming in the same brutish-looking form factor as the DS-2, this includes both an emulation of the smooth 2045 low-pass filter and Stylophone’s dirtier Gen R-8 filter, creating a device that the ...

While the 2045 filter has just a single low-pass mode, the R-8 can be run in low-pass ... Trigger options include gate a signal, an audio signal threshold and a manual trigger button, while there’s ...