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Similarly, the input pad is a proper balanced U-pad rather than the 1:1 transformer tap used on the original, so this clone can handle higher levels. With inductors from Carnhill, this is basically a clone of the Musicland 0011 input module - only rather than the Lustraphone mic input transformer originally used (and not manufactured for many years), this uses an equally top quality Jensen transformer. I've modified it to work in a standard API-style 500 series rack, and I've also tweaked a number of components using the schematics of Giorgio Moroder's legendary Musicland console - hand-selecting filter capacitors to fine-tune the EQ, and using tantalum and styroflex caps for coupling as specified in the schematics to make sure the tone is all there. This particular unit is a prototype I built using a PCB layout by boutique designers Iron Age Audioworks, and I'm selling it with their knowledge & permission. When The Beatles set up Apple Studios, they bought a Helios. The list of classic albums recorded on Helios preamps speaks for itself, and includes albums by the Rolling Stones, Led Zeppelin, Jimi Hendrix, Bob Marley, Black Sabbath, The Who, Eric Clapton, Ella Fitzgerald, Joy Division, 10CC, and many, many more. A discrete class A mic preamp and three-band passive inductor EQ in a single 500-series module, the Helios (originally known as a " 0011" module) is one of the very best preamps out there - punchier than Neve, clearer than API, it's the perfect blend of vintage tone and sonic quality. Fully featured and still hand assembled, the 512c exhibits the reliability, long life, and uniformity which are characteristic of all API products.This listing is for one of my Helios "Type 69" style input module clones. 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. The API 512c remains faithful to the circuit designs of API's founder Saul Walker. 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. Offering an impressive 65 dB of gain, the 512c includes phantom power, switchable polarity, -20 dB pad and Mic or Instrument/Line selector. Sonically, it delivers the distinct API sound at an affordable price, and in the scalable API 500 Series format. 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.
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Features API's unique Five Year Warranty.Traditional API fully discrete circuit design with 2520 Op Amp.
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