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Bob's Devices Sky Cinemag

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Product Description

Manufacturer's Description:

Ultra High quality laminations, lower inductance and superior sound. These transformers were especially designed and tested with several low-output moving coil cartridges. These are very difficult transformers to construct and require a precision manufacturing process that can only be done by David Geren at CineMag. The same construction techniques are used as in the 1131, except that the inductance of the SKY is even lower. In addition, the bandwidth is extended a little further.

Hand Crafted, Moving Coil (MC) Cartridge Step-up Transformer (SUT) built with new CineMag SKY (Blue Version) Transformers and gold plated hardware in a hand polished black powder coated cast-aluminum enclosure. All lettering is laser etched. Included are 2 switches: high/low gain and ground/lift.

Includes premium construction with C&K Brand Silver contact toggle switches, and Deluxe Gold Plated RCA jacks.

Optional XLR connectors are available on a larger custom chassis without laser etching
These specially designed transformers are wired to connect a moving coil cartridge (on a turntable) to a phono preamplifier, phono input of a receiver, or your preamp's phono input.

The SKY 30 is switchable for 1:15 (24 dB gain) or 1:30 (30 dB gain). The SKY 20 is switchable for 1:10 (20dB) or 1:20 (26dB), The SKY 10 is switchable for 1:5 (14dB) or 1:10 (20dB).  The SKY 40 is not switchable and is set at 1:40 (32 dB).  Any of the SKY Step up transformers are available at a fixed ratio, without a switch at the same price,  just email bob@bobsdevices.com for that order.

CONSTRUCTION TECHNIQUES:  All connections are Resistance soldered using the American Beauty system which avoids heat damage to the delicate insulation on the hair-like wires of the transformers.  Test equipment is very low current to avoid saturating the transformer cores.  You can count on a premier product that is state-of-the-art.

This unit includes a grounding post that can be used to connect your turntable ground and your preamplifier ground.  It also includes a ground "lift" switch.  In all modes, the transformer cases and faraday shield internal to the transformers are connected to the ground screw.  In the "ground" mode, the phono system minus sides (negative sides) are connected to the grounding lug.  This configuration works well for those systems where the turntable ground is connected to the negative leads coming from the phono cartridge or where the negative inputs to the preamp are internally connected to ground.  In the "lift" mode, none of the conductors in the RCA jacks are connected to the case, ground, or shield and there is no electrical connection between channels.  This design allows you much flexibility to mitigate for ground loops regardless of the configuration of your other equipment.

I take pride in each and every set and provide customer support to make sure that they work well in your system.   


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