API 312 500 Series Discrete Microphone Preamp


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SKU API-312-999-0967 Categories , ,
Brands: API

API 312 500 Series Discrete Microphone Preamp

API’s classic 312 microphone preamp in a 500 series module featuring a discrete circuit design with 2520 Op Amp and proprietary AP2516 input transformer

The API 312 has long been known as one of the most important preamps in recording history. In 2019, API Audio celebrated its 50th anniversary with a limited edition run of the mic pre, but in 2020, the brand is bringing the 500 Series module back to regular production.

This standard production version of the API 312 is based on the original design of company co-founder Saul Walker. The fully discrete circuit design uses 2520 op-amps and proprietary AP2516 input transformers to get that familiar sound of 1970s American rock records with lots of warmth. Following in the footsteps of the limited run of the 50th Anniversary Edition, the new API 312 features a beautiful vintage style analog VU meter, in addition to a 20 dB pad switch and peak LED. The 500 Series module also offers a maximum 69 dB of gain.


  • API’s Classic 312 Microphone Preamp in a 500 Series module
  • Vintage Style Analog VU Meter
  • Maximum 69 dB of gain
  • Traditional API fully discrete circuit design with 2520 Op Amp
  • Proprietary AP2516 Input Transformer
  • 20 dB pad switch
  • 3:1 Output Transformer Tap Selection
  • Switchable 48V phantom power
  • Peak LED
  • API’s Five Year Warranty

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