API Audio 512c

SKU: 512c

Discrete Mic/Line/Instrument Pre


About this item



API Audio 512c Features

Mic Preamp with 65 dB of gain
Front and Back Panel Mic Input Access
Line/Instrument Preamp with 45 dB of gain
Front Panel Line/Instrument Input
LED VU meter for monitoring output level
20 dB pad switch, applies to mic/line/instrument
48v Phantom switchable power
Traditional API fully discrete circuit design with 2520 Op Amp
Features API’s unique Five Year Warranty

The API 512c is a mic/line/instrument preamp, world-famous for its ability to provide a low noise (-129 EIN) and unusually good-sounding front end for all types of audio applications. Sonically, it delivers the distinct API sound at an affordable price, and in the scalable API 500 Series format. Offering an impressive 65 dB of gain, the 512c includes phantom power, switchable polarity, a -20 dB pad, and Mic or Instrument/Line selector. Front panel XLR and 1/4 inch connectors combined with rear panel mic access allow for additional flexibility when installed into an API lunchbox®, API’s 10 positions 500V vertical rack, or an API console.

The API 512c remains faithful to the circuit designs of API’s founder Saul Walker. Artfully combining those circuits with API’s proprietary transformers and the incomparable 2520 op-amp, the 512c is a highly musical and rich-sounding analog mic pre, equally at home in commercial recording spaces as it is in smaller home studios. Fully featured and still hand assembled, the 512c exhibits the reliability, long life, and uniformity that are characteristic of all API products.


Rear Connector: Output on the edge connector, MIC Input on the edge connector,
can be defeated
Front Connectors: XLR MIC Input, HI-Z 1/4″” Unbal Input
Gain Range: MIC: 34dB to 65dB (14dB to 45dB w/PAD). HI-Z: 14dB to
45dB (-6dB to 25dB w/PAD)
Maximum Input Levels: MIC, +8 dBu, Unbal HI-Z Input, +36 dBu
Input Impedance: MIC Input, 1500 Ohms (150 Ohm mic), HI-Z Unbal Input,
400 K Ohms (20 K Ohms with pad)
Output Impedance: Less than 75 Ohms, Transformer Balanced
Clipping Level: +30 dBu
Frequency Response: +0, -.3, 30 to 20 kHz
Noise: Equivalent Input Noise: -129, Mic In. -125, Un-Balanced In.
Actual Metered Noise: Mic, -95 dBu, Un-Bal., -90 dBu
Distortion: Less than .05% @ +4 Out, Less than .1% @ +28 Out
Power Consumption: ±12/18 Volts/DC, @40 ma.
Size: 1.5″” X 5.25″” X 7″” Deep
Size (Boxed for Shipping): 4.5″” X 6.5″” X 10.25″”
Actual Weight: 1.41 lbs.
Shipping Weight: 1.94 lbs.”

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