API 312 - 50th Anniversary Edition

Faithful reproduction of the original 312 microphone preamp used in API consoles from the 1970s and still highly sought after today
API 312 - 50th Anniversary Edition
API 312 - 50th Anniversary Edition API 312 - 50th Anniversary Edition API 312 - 50th Anniversary Edition
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Please note: This item requires a 500 Series Rack for operation. Shop racks.

The API 312 50th Anniversary Edition is a faithful reproduction of the original 312 microphone preamp used in API consoles from the 1970s. Limited to 50 units, these stunning 500 series modules are built using Saul Walker’s original design and feature limited edition gold faceplate.


The original 312 is one of API’s most popular mic preamps and was used extensively in their consoles, as well as the highly successful 3124 rack unit. Known for its bright, open, punchy sound, the API 312 has been a go-to preamp for engineers recording drums, rock guitars, bass, vocals and more.

The API 312 50th Anniversary Edition utilizes an exact reproduction of Saul Walker’s original 312 printed circuit board, including the hand-wired gain pot and switches. Equipped with API’s AP2516 Input Transformer, the 312 50th Anniversary Edition will instantly bring any track to life.


Featuring 65 dB of gain and a 20 dB pad switch, the API 312 is capable of withstanding blisteringly high SPLs, making it an excellent choice for heavy-hitting drummers, screaming guitar amps, and particularly emphatic vocalists. Don’t worry though, the peak LED indicator will help keep you from clipping – or intentionally drive signals for added saturation.

The vintage-style analog VU meter pays homage to the golden era of analog recording. The individually serialized, limited production 50th-anniversary faceplate give each unit a sleek, elegant feel.



  • API's Classic 312 Microphone Preamp in a 500 Series module
  • Reproduction of the Original 312 PCB Design
  • Mic Preamp with 65 dB of gain
  • Proprietary AP2516 Input Transformer
  • 20 dB pad switch
  • Switchable 48 V phantom power
  • Vintage Style Analog VU Meter
  • Peak LED
  • Limited Production with 50th Anniversary Faceplate
  • Individually Serialized (1-150)

Additional Information

Condition New
Chassis Module
Module Type 500 Series
Module Slot Count 1 Slot
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