{"product_id":"wmd-digital-vca-mk3","title":"WMD DIGITAL VCA MKIII DUAL ZERO CROSSING VCA AND POLARIZER","description":"\u003cp data-mce-fragment=\"1\"\u003eI've done several designs of this circuit over the years, the first one had no knobs, the second was too small, the MKIII is finally how this circuit should be packaged. This module does some really cool stuff and is super useful in any system.\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe Digital VCA lets signal through like a normal VCA, but the CV and attenuation level is controlled digitally. This lets us do things like wait until there is a zero crossing to change the amplitude, resulting in clickless amplitude changes. \u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe Trigger mode causes the VCA to only update when a trigger is received. The addition of a noise circuit for each side let us do a very quick and easy sample and hold that never droops. With no input, 5V is normaled to the attenuator, so you get a 0-5V sample and hold. In Bipolar mode, you can get -5 to +5V. \u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eBoth sides have bipolar VCA mode (polarizer), which lets them invert the signal when negative CV comes in. Also known as ring modulation. With the zero crossing detector, this can produce some super wild wave shapes. \u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eLimited run of 410 units for Eurorack Modular Synthesizer systems\u003c\/p\u003e\n\u003cdiv class=\"info-card__heading mb-12 d-grid gap-16 gap-md-24\"\u003e\u003cspan class=\"h5 m-zero\"\u003eFeatures\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"hide-empty text-block\"\u003e\n\u003cul class=\"metafield-single_line_text_field-array\"\u003e\n\u003cli class=\"metafield-single_line_text_field\"\u003eDual VCA Design\u003c\/li\u003e\n\u003cli class=\"metafield-single_line_text_field\"\u003eUnipolar or Bipolar Operation\u003c\/li\u003e\n\u003cli class=\"metafield-single_line_text_field\"\u003eDC Coupled Analog Signal Path\u003c\/li\u003e\n\u003cli class=\"metafield-single_line_text_field\"\u003eLow Distortion \/ Low Noise\u003c\/li\u003e\n\u003cli class=\"metafield-single_line_text_field\"\u003eVCA Closes Completely\u003c\/li\u003e\n\u003cli class=\"metafield-single_line_text_field\"\u003eZero Crossing Detector Mode\u003c\/li\u003e\n\u003cli class=\"metafield-single_line_text_field\"\u003eTrigger Mode\u003c\/li\u003e\n\u003cli class=\"metafield-single_line_text_field\"\u003eTwo Independent Noise Sources\u003c\/li\u003e\n\u003cli class=\"metafield-single_line_text_field\"\u003e8 bit CV resolution\u003c\/li\u003e\n\u003cli class=\"metafield-single_line_text_field\"\u003eGreat for Fast Envelopes and Sine Bass Sounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"info-card__heading mb-12 d-grid gap-16 gap-md-24\"\u003e\u003cspan class=\"h5 m-zero\"\u003eSpecifications\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"hide-empty text-block\"\u003e\n\u003cul class=\"metafield-single_line_text_field-array\"\u003e\n\u003cli class=\"metafield-single_line_text_field\"\u003ePower: +65mA, -45mA\u003c\/li\u003e\n\u003cli class=\"metafield-single_line_text_field\"\u003eWidth: 8HP\u003c\/li\u003e\n\u003cli class=\"metafield-single_line_text_field\"\u003eDepth: 35mm with cables\u003c\/li\u003e\n\u003cli class=\"metafield-single_line_text_field\"\u003eHeight: Eurorack 3U (128.5mm)\u003c\/li\u003e\n\u003cli class=\"metafield-single_line_text_field\"\u003eBoard Height Behind Panel: 112mm\u003c\/li\u003e\n\u003cli class=\"metafield-single_line_text_field\"\u003eCV\/Signal Input Impedance: 100k\u003c\/li\u003e\n\u003cli class=\"metafield-single_line_text_field\"\u003eOutput Impedance: 1k\u003c\/li\u003e\n\u003cli class=\"metafield-single_line_text_field\"\u003eUPD in 3.3V Threshold Schmitt Trigger\u003c\/li\u003e\n\u003cli class=\"metafield-single_line_text_field\"\u003eZCD produces 15µs 5V pulse\u003c\/li\u003e\n\u003cli class=\"metafield-single_line_text_field\"\u003e5V CV to fully open VCA\u003c\/li\u003e\n\u003cli class=\"metafield-single_line_text_field\"\u003eLinear VCA response\u003c\/li\u003e\n\u003cli class=\"metafield-single_line_text_field\"\u003e20Vpp signal handling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"WMD","offers":[{"title":"Default Title","offer_id":42870095151277,"sku":null,"price":249.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0606\/3449\/7197\/files\/DigitalVCAMK3.webp?v=1710512222","url":"https:\/\/www.detroitmodular.live\/products\/wmd-digital-vca-mk3","provider":"Detroit Modular","version":"1.0","type":"link"}