The API 512c is a discrete mic / line / instrument preamp designed to provide a low noise, unusually good sounding front end for all types of audio systems.
Sonically, it offers the distinct API sound at an extremely affordable price. Offering low noise (-129 EIN) and 65 dB of gain, the 512c includes phantom power, and 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. Fully featured and still hand assembled, the 512c carefully preserves the original sound character that made it so much a part of the early days of recording. Offering high headroom and a wide variety of inputs and input access points, it is equally at home in the commercial recording studio as it is in the home project studio.
The 512c Mic/Line Preamp makes use of the 2520 op-amp and therefore 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 50 dB of gain
Front and Back 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
Uses the famous API 2520 Op-Amp
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
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.