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Quadratic MC-1 Moving Coil Transformer
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Quadratic MC-1 Moving Coil Transformer

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Product Code: QUA0000001
Quadratic Audio MC-1

Impressions of the MC-1 from TONE

and another review...

https://the-ear.net/review-hardware/quadratic-mc-1-a-positive-step-up/



The Quadratic Audio MC-1 is the product of the evolution of transformer
based “Head-Units” for phono stages. It takes the low level signal from
Moving Coil cartridges and passively increases the level to be compatible with
standard phonograph pre-amplifiers.

Quadratic Audio’s objective was to design the best movingcoil transformer possible, realizing the design obstacles were daunting. Themain issues being frequency response, noise, distortion and proper grounding.On paper a transformer is the ideal step-up device for a moving coil cartridgebut proper implementation and design can be difficult.

Quadratic Audio worked in conjunction with CineMag, aleading manufacturer of audio transformers for the professional recordingindustry since 1975. This collaboration has produced a unique transformer,incorporating several proprietary technologies that works with virtually alltype of moving coil cartridge.

The design employs a Faraday shield (for low noise),hydrogen annealed laminations with a unique fabrication process and manufacturedwith exacting standards and superior materials.The design has extremely high hum and radio frequency interference rejection,wide bandwidth along with low phase shift for superior imaging and detailretrieval.

The transformers are mounted in a custom steel enclosurefurther isolating the transformers which are mounted on a printed circuit boardto minimize crosstalk between channels. Truly a technical and designtourde force.






Specifications

Gain Setting High: +28 dB

Gain Setting Low: +22 dB

Frequency Response: 10Hz – 100Khz

Recommended Load: 47k

Dimensions: W 6.5” (165mm)

D 8.0”(203mm) H3.0”(76mm)

Weight: 4.2 lbs. (1.9 kg)

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