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API 512c Mic/Line Pre - Open Box

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MSRP: $895.00
Our Price: $850.25
(You save $44.75 )

Product Description

The 512c is blisteringly fast and will push the transients of your signal to the very front of your mix - perfect for drums and anything else that needs a hefty dose of punch or bite. API preamps have always been known for their mid-range forward color which can be magnificent for certain applications, but it's important to keep in mind that this preamp is also capable of being remarkably clean and honest. It's quite hot and doesn't usually require much input gain to get a strong signal, and when run with low gain settings you'll find a lightning fast slew-rate that passes every last ounce of transient detail with a tone that's more clear and open than anything a vintage gear snob would covet. You won't hear that classic API color until you lay into the gain a good bit more, but be ready for impeccable, rich guitar tone when you do! 


American Console Tone from the 70's

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, -20 dB pad and Mic or Instrument/Line selector. Front panel XLR and 1/4 inch connectors combined with rear panel mic access allows for additional flexibility when installed into an API lunchbox®, API's 10 position 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 which are characteristic of all API products.


  • 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


Rear Connector: Output on edge connector, MIC Input on 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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