API 512v is a mic / line / instrument preamp, world famous for its ability to provide a low noise (-129 EIN) & unusually good sounding front end for all types of audio applications
Sonically, it delivers the instantly recognizable API sound at an affordable price, and in the scalable API 500 Series format. Offering an impressive 65 dB of gain, the 512v includes front panel Variable Output control, switchable 3:1 output transformer selection, phantom power, switchable polarity, -20 dB pad, and Mic or Instrument/Line selector. The front panel Combo-style XLR and 1/4 inch connector combined with rear panel mic access allows for additional flexibility when installed into an API lunchbox®, API's 10 position 500V vertical rack, or into an API console.
The API 512v 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 512v 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 512v exhibits the reliability, long life, and uniformity which are characteristic of all API products.
Mic Preamp with 65 dB of gain
Variable Output Level Control
3:1 Output Transformer Tap Selection
Front and Back Panel Mic Input Access
Line/Instrument Preamp with 45 dB of gain
Front Panel Combo-style XLR + 1/4 inch Line/Instrument Input
LED VU meter for Gain Level indication
20 dB pad switch, applies to mic/line/instrument
48v Phantom switchable power
Traditional API fully discrete circuit design with 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.