{"product_id":"studio-electronics-two-stage-class-a-voltage-controller-amp","title":"Studio Electronics AMP","description":"\u003cp\u003eThe \u003cstrong\u003eStudio Electronics AMP\u003c\/strong\u003e is a 2 stage Class A discrete design using 3 pairs of hand matched transistors. Envelope is usually applied to ST1\/1. ST1\/2 goes thru an attenuverter and can be used for envelope or modulation. ST2\/1 goes to the 2nd stage, and is typically used for volume control. ST2\/2 goes thru an attenuverter and is typically used for modulation.\u003c\/p\u003e\u003cp\u003eThe AMP, the 5089, and the 3003 are Class A circuits. They draw more current from the +12 rail than from the -12 volt rail. If the system power supply is under-sized, hum or buzz may be heard. In that case, larger filter capacitors and\/or a larger power transformer will be needed. The 4075 draws equally from both rails, and is more immune to hum. Like the filters Boomstar Modular AMPs are hand-built entirely in the U. S. of A—just ask Rachael Herbison!\u003c\/p\u003e\u003ch3\u003ePotentiometer Potential\u003c\/h3\u003e\u003cp\u003eTwo attenuverters and two attenuation pots control the INPUT, ST1 CV2, ST2 CV2, and OUTPUT, delivering smooth, detailed, and complex expression.\u003c\/p\u003e\u003ch3\u003eSwitch it Up\u003c\/h3\u003e\u003cp\u003eUber useful continuous hypnotic DRONE for endless sustain\/release, and DRIVE—the overdrive circuit from the Boomstar desktop—for last stage energy, bite, soft clipping, and gonzo '70's era \"Distortion +\" crunchy fuzz.\u003c\/p\u003e\u003ch3\u003ePatch it Up\u003c\/h3\u003e\u003cp\u003eSix patch points: INPUT, ST1 CV1, ST1 CV2, ST2 CV1, ST2 CV2, OUTPUT direct the deepest manipulation.\u003c\/p\u003e\u003ch3\u003eAll Controls and Patch Points\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eINPUT – Adjusts the audio input.\u003c\/li\u003e\n\u003cli\u003eST1 CV2 – Adjusts stage 1, control voltage 2.\u003c\/li\u003e\n\u003cli\u003eST2 CV2 – Adjusts stage 2, control voltage 2.\u003c\/li\u003e\n\u003cli\u003eDRONE – Sustains the last note received.\u003c\/li\u003e\n\u003cli\u003eDRIVE – Final output stage overdirve\/saturation.\u003c\/li\u003e\n\u003cli\u003eOUTPUT – Adjusts the audio output.\u003c\/li\u003e\n\u003cli\u003eINPUT – Audio input.\u003c\/li\u003e\n\u003cli\u003eST1 CV1 – Stage 1, control voltage 1 input.\u003c\/li\u003e\n\u003cli\u003eST1 CV2 – Stage 1, control voltage 2 input.\u003c\/li\u003e\n\u003cli\u003eST2 CV1 - Stage 2, control voltage 1 input.\u003c\/li\u003e\n\u003cli\u003eST2 CV2 – Stage 2, control voltage 2 input.\u003c\/li\u003e\n\u003cli\u003eOUTPUT – Audio output.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003ePower Usage - 35mA, 12mA (+12 \/ -12)\u003c\/p\u003e","brand":"Studio Electronics","offers":[{"title":"Default Title","offer_id":44449888043111,"sku":"56779","price":239.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/studio-electronics-amp-1_c49ddf82-f872-4584-8aa8-c2d9712ac427.jpg?v=1787090823","url":"https:\/\/vintageking.mom\/products\/studio-electronics-two-stage-class-a-voltage-controller-amp","provider":"Vintage King","version":"1.0","type":"link"}