A-108 6/12/24/48dB Low Pass Filter

Like the A-120, the A-108 filter is also based on the Moog transistor cascade, but uses not only 4 poles, but 8 and can therefore have a maximum slope of 48 dB. That sounds sensational at first, but in real synthesizer life it’s not that extremely spectacular. What is striking, however, is the fantastic and … Read more

A-124 Wasp Filter

The Wasp Filter uses the somewhat idiosyncratic filter circuitry of the 1978 EDP Wasp synthesizer. The 12 dB filter produces very peculiar, “wild” distortions at higher resonances, which, however, always remain very easy to control. Possibilities and structure of the module (but not the layout of the front panel) are similar to the A-106-5 SEM … Read more