Classic microphone preamp in a 500 Series module featuring a discrete circuit design with 2520 Op Amp and proprietary AP2516 input transformer The 312 is one of API's most sought after and famous mic... View more
500 series mic/line/instrument preamp based on the 512c with added variable output level control and 3:1 output transformer tap selection Sonically, it delivers the instantly recognizable API sound... View more
500 Series line amplifier Modeled after API's highly prized console-based 325 booster cards, the 535 can both amplify and attenuate incoming and outgoing signals for ultimate flexibility-all while... View more
500 Series discrete direct input with gain control Like the console-based API 205L, the 505-DI is specifically designed to accept a guitar, bass or keyboard direct input while minimizing any loading... View more
Single-channel microphone/line/instrument preamp for 500 Series The API 512c is a mic / line / instrument preamp, world famous for its ability to provide a low noise (-129 EIN) and unusually good... View more