{"product_id":"doepfer-a-133-2","title":"Doepfer - A-133-2","description":"\u003cp align=\"left\"\u003e\u003cspan style=\"font-family: Arial; font-size: small;\"\u003eA-133-2 is the slim version of the A-133 but has some additional features and improvements available compared to the A-133.\u003c\/span\u003e\u003c\/p\u003e \u003cp align=\"left\"\u003e\u003cspan style=\"font-family: Arial; font-size: small;\"\u003eModule A-133-2 can be used for a lot of applications: as a simple VCA, or a voltage controlled polarizer\/attuverter, or a voltage controlled inverter up to a DC coupled ring modulator. In principle the module contains two special voltage controlled amplifiers (VCAs) that allow both positive and negative amplification.\u003cbr\u003e The overall amplification is defined by the sum of the voltage generated by the \u003cb\u003eMan\u003c\/b\u003e control, the external control voltage \u003cb\u003eCV\u003c\/b\u003e and the position of the \u003cb\u003eCV\u003c\/b\u003e control which works as an attenuator for the external control voltage. Without external CV the amplification is +1 when the \u003cb\u003eMan\u003c\/b\u003e control is fully CW. In the center position the amplification is zero and fully CCW it's -1 (i.e. the incoming signal is inverted). By means of the external control voltage CV the manually adjusted amplification can be modulated.  CV can be both positive or negative (i.e. bipolar) to obtain positive or negative amplification values controlled by the external CV.\u003cbr\u003e In addition the CV signal can be modulated via the modulation control input \u003cb\u003eMod\u003c\/b\u003e by means of another control voltage. The \u003cb\u003eMod\u003c\/b\u003e socket is normalled to +5V, i.e. a constant positive voltage is used as modulation CV provided that no plug is inserted into the \u003cb\u003eMod\u003c\/b\u003e socket. The control voltage range for this socket is bipolar and can be adjusted to the user's requirements by means of a trimming potentiometer. The factory setting is -5V...+5V (i.e. -5V no modulation, 0V about 50% modulation, +5V full modulation).\u003cbr\u003e The current amplification is displayed by a dual color LED. It's not a signal display but indicates the amplification (yellow = positive amplification, red = negative amplification)\u003c\/span\u003e\u003c\/p\u003e \u003cp align=\"left\"\u003e\u003cspan style=\"font-family: Arial; font-size: small;\"\u003eApplication examples:\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp align=\"left\"\u003e\u003cspan style=\"font-family: Arial; font-size: small;\"\u003evoltage controlled amplifier (VCA) with pure positive overall amplification (Man + CV)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp align=\"left\"\u003e\u003cspan style=\"font-family: Arial; font-size: small;\"\u003evoltage controlled inverter with pure negative overall amplification (Man + CV)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp align=\"left\"\u003e\u003cspan style=\"font-family: Arial; font-size: small;\"\u003evoltage controlled polarizer\/attenuverter overall amplification changing between positive and negative (Man + CV)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp align=\"left\"\u003e\u003cspan style=\"font-family: Arial; font-size: small;\"\u003eDC coupled ring modulator with offset feature, the \"classical\" ring modulator corresponds to Man=0 and symmetrical audio signals for In and CV\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp align=\"left\"\u003e\u003cspan style=\"font-family: Arial; font-size: small;\"\u003eadditional effects by means of the modulation feature of the CV signal (using the\u003cb\u003e Mod\u003c\/b\u003e input)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr class=\"line\"\u003e \u003cp\u003ePower consumption: 20 mA at +12 V and 20 mA at -12 V\u003c\/p\u003e \u003cp\u003eDepth: 40mm\u003c\/p\u003e HP : 4","brand":"Doepfer","offers":[{"title":"Default Title","offer_id":54725920883029,"sku":null,"price":57.34,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/1872\/3413\/files\/a-133-2.jpg?v=1787442461","url":"https:\/\/climivor.myshopify.com\/products\/doepfer-a-133-2","provider":"CLIMIVOR","version":"1.0","type":"link"}