API is represented in the current MicPro catalogue by 512V 500-series discrete microphone and line preamp. The listed range is relevant to high-gain studio preamplification in a 500-series format. When comparing these products, check rack format, gain, headroom, input and output connections, phantom power, pad and the available 500-series chassis. It is relevant when a microphone needs a dedicated front end rather than another general-purpose interface input. This description is kept catalogue-led, so the individual model listing remains the source for exact specifications, compatibility and included accessories.