The Doepfer A-133-2 VCA/Polarizer/Inverter/Ring Modulator is a compact module that offers a range of features for a variety of applications. With two VCAs, the module allows for positive and negative amplification, and can be used as a simple VCA, a voltage-controlled polarizer/attenuverter, or a voltage-controlled inverter. The module also includes a DC-coupled ring modulator with an offset feature, and the overall amplification is defined by the Man control, external control voltage CV, and the position of the CV control. The CV signal can be modulated via the modulation control input Mod with another control voltage. This streamlined version of the A-133 module has added features and specifications including a width of 4HP and product code A-133-2.