Sorry, the product API 312 - 50th Anniversary Edition is not available anymore on Studio Economik's website.

Interested in other Mic Preamps products?

Do you want to see other API products?
We have a few suggestions you could be interested in;


The API 312 50th Anniversary Edition is a faithful reproduction of the original 312 microphone preamp used in API consoles from the 1970s and still highly sought after today.

Packaged into a modern 500 Series module, the 312 is one of API's most famous mic preamps and is the basis of the highly successful 3124. Starting from an exact reproduction of Saul Walker's original 312 printed circuit board, API engineered this classic design true to the original, including the hand-wired gain pot and switches. The 312 also features API's AP2516 Input Transformer, and has included a vintage style analog VU meter and a Peak LED indicator. Each unit carries an individual serial number noting the limited run of 150 Anniversary Edition Units.


  • 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 48V phantom power
  • Vintage Style Analog VU Meter
  • Peak LED
  • Limited Production with 50th Anniversary Faceplate
  • Individually Serialized (1-150)
  • Specifications

    Gain Range: +34 dB to +69 dB (+14 dB to +49 dB with PAD)
    Maximum Input Level: -4 dBu (+16 dBu with PAD)
    Maximum Output Level: +31 dBu
    Peak LED: Set to +18 dBu output level
    Output Impedance: Less than 75 Ohms, Transformer Balanced
    Frequency Response: +/-0.5 dB, 20 Hz to 40 kHz
    Signal to Noise Ratio: 120 dB
    Connections: API VPR 500 Edge Connector
    Size: 1.5" x 5.25" x 7" Deep
    Weight: 1.5 lbs.
    Now accepting
    Financing available
    Like us
    Follow us
    ©2004-2024 - Studio Economik Inc.® All Right Reserved.