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 moduleReproduction of the Original 312 PCB DesignMic Preamp with 65 dB of gainProprietary AP2516 Input Transformer20 dB pad switchSwitchable 48V phantom powerVintage Style Analog VU MeterPeak LEDLimited Production with 50th Anniversary FaceplateIndividually Serialized (1-150)
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.