Befaco Percall, Eurorack Module, 4-Channel VCA with decay envelopes, Designed for percussion sounds, 4 Channels, each with VCA, decay envelope and volume control, Per channel: Audio input, trigger input, decay CV input, envelope output, Audio output per channel (can also be used as 4-channel mixer), Current consumption: 80 mA (+12 V) / 60 mA (-12 V), Width: 12 HP, Depth: 25 mm