Doepfer A-117, Digital Noise / 808 Sound Source@+Module A-117 (DNG) is a combination module, including a digital noise generator and an 808 source. The digital noise generator uses random sequences of square waves, (18-band, with multiple slewed feed-back loops), whose rate can go from random clicks to pure noise. The colour of the noise is very different from the analog noise produced by the A-118. In addition to a manual setting, the rate can be control-led by an external clock - eg. VCO, LFO or MIDI clock).@+@+ The 808 Source aims to re-create the sort of multi-oscillator array that was used in Roland’s TR-808 and 606 drum machines as the basis of the sound of the hi-hat, cymbals and cowbell. The cowbell mix uses two oscillators, and the cymbals mix six., Width: 8HP / 40.3 mm, Depth: 40 mm (measured from the rear of the front plate), Power requirements: 20 mA (12V) / -10 mA (-12V)