{"product_id":"smoothie-audio-smear-stereo-98-pole-allpass-filter","title":"Smear - Stereo 98-Pole Allpass Filter","description":"\u003cp\u003eSmear is Smoothie Audio’s first Eurorack module — a dual stereo 98-pole allpass filter unlike anything else in your rack.\u003c\/p\u003e\n\u003cp\u003eAt its core, Smear takes a deceptively simple concept — the allpass filter, usually buried deep inside reverb algorithms — and refines it into a playable, sculptural processor. A single allpass subtly shifts the phase of incoming audio while passing the entire signal unfiltered. Stack 98 poles in series, and the effect becomes striking: frequencies across the spectrum are delayed by different amounts, creating a rich spectral delay that can smear, morph, and transform sound. \u003c\/p\u003e\n\u003cp\u003eSmear can be become different effects, according to how you set the parameters:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTransient Smearing \u0026amp; Spectral Delay that reshapes transients, can add punch\u003c\/li\u003e\n\u003cli\u003eResonator \u0026amp; Percussion Voice for metallic, physical-modeling tones when pushed into feedback territory\u003c\/li\u003e\n\u003cli\u003eMorphing Filter \u0026amp; Phasor for animated timbral movement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eInterface \u0026amp; Controls\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eThe panel is laid out symmetrically, with two identical sections (Left and Right). By default, stereo audio flows left → right → out, but a dedicated Split Mode allows each side to process audio independently.\u003c\/p\u003e\n\u003cp\u003eEach section offers three core parameters — Frequency, Resonance, and Stages — each with dedicated CV inputs. Frequency and Resonance have attenuverters for precise modulation. A global Feedback control (with CV) unlocks resonant, flanger-like, and physical-modeling behaviors.\u003c\/p\u003e\n\u003cp\u003eThe Stage sliders reveal Smear’s hidden depth: with LEDs indicating crossfade modes between filter poles, you can dive into complex notch filtering, animated flams, and evolving timbral movement. Modulate them, and the module comes alive with unpredictable, dynamic filtering effects.\u003c\/p\u003e","brand":"Smoothie Audio","offers":[{"title":"Default Title","offer_id":52831640813886,"sku":"SMOOTHIE-AUDIO-SMEAR","price":334.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/1246\/files\/smoothie-audio-smear-ctrl-mod.png?v=1767638395","url":"https:\/\/www.ctrl-mod.com\/en-jp\/products\/smoothie-audio-smear-stereo-98-pole-allpass-filter","provider":"Control","version":"1.0","type":"link"}