What's an all-analog quad core processor? Excellent question—the Make Noise QPAS Quad Peak Animation System is a stereo filter that surpasses the realm of simple filtering into another dimension of pings, resonant sweeps, and otherworldly modulation. A worthy successor to the long-missed MMG, the QPAS is a Eurorack filter unlike any other. Filling an obvious gap in their already very complete lineup of modules, the QPAS sounds excellent as a simple filter: just plug in a saw or square wave, tweak the Freq and Q knobs, and bathe in the spectacularly squelchy glory. Much of the QPAS's magic, though, comes from three very special features: stereo operation, multimode output, and the Radiate parameter. Quad Peak Animation System: a quad peak stereo filter and resonator for Eurorack modular synthesizers Inspired by Tony Rolando's time at Moog calibrating the peculiar Minimoog Voyager dual filter Capable of creating formant vowels, resonant pings, and more True stereo operation with mono-to-stereo and stereo-to-mono normalizations Input VCA for automating level of signal introduced to the filter network Typical filter controls fully intact: Frequency, Q, and associated CV inputs are front-and-center True stereo outputs, with four filter types per output: Lowpass, Highpass, Bandpass, and Smile Pass Smile Pass provides peculiar phaser-like effects while maintaining relatively constant output volume Radiate controls and CV inputs control displacement of the individual peak frequencies from the base Freq setting Radiate Left and Radiate Right controls operate independently for spectacular stereo effects and isolation of pairs of peaks The ever-mysterious !!!! inputs provide unexplained, but spectacular-sounding effects from accents to explosions and inharmonic pseudo-aliasing crunch Guaranteed to be awesome CV inputs and appropriate attenuators for every parameter!