Premium MC Phono Step-Up (SUT) Kits
The Premium Kit is supplied with the new LL1931, LL1933, LL1941 or LL1943 MC step-up transformers. (click on the model numbers to bring up the data sheet) These were developed as a higher performance alternative to the LL9226 and LL1678. They use the same amorphous cobalt core material, but are substantially larger. The coils are wound with Cardas “6 nines” high purity copper wire.
The design was optimized for low to medium output MC cartridges and the sonic performance with these transformers is exceptional.
The LL1931 and LL1933 provides 18dB and 24 dB step-up capability that is switch selectable, A higher step-up ratio version of the LL1931/1933, the LL1941/1943, is also available for very low output cartridges or for use with low gain phono preamps, yielding 24dB and 30dB step-up.
For the Ultimate in MC Step-up the LL1931, LL1933, LL1941 and LL1943 are all available wound with high purity silver wire as an option.
There is also grounding flexibility designed into the kit to allow the best performance with different types of tonearm cabling.
Solder pads for resistors (1/4 or 1/2W) on the secondary side of each transformer are provided on the PC board so that the user can optimize resistive loading for the best sound.
The kit includes connectors, transformers, PC board, generic high purity copper wire, hardware, and enclosure.
NOTE: we need the specs of your MC cartridge in order to get the correct R-LOAD resistor value!
Important note about the R-LOAD resistor.
We base the R-LOAD resistor value, shipped with your kit, on the data on your MC cartridge you provided us with.
This value is not completely set in concrete, and can in fact be varied with a resistor value above and below with what is shipped with your kit.
The relevant different values which can be tried for a given SUT model are detailed in the Applications Guide. Experimenting with different R-LOAD resistor values will change the resulting tone of your turntable and cartridge in use and allows you to really fine tune your MC cartridge.
To aid in trying out different R-LOAD resistor value, our kits come with gold plated pcb pins, onto which the R-LOAD resistor is mounted/soldered to. This makes changing out the R-LOAD resistor easier and safer, as constant de soldering and re soldering of parts directly on a pcb pad can and will damage that pad in time.
Please see the photo's below showing how the R-LOAD resistoe is mounted to these pcb pins.
The enclosures is a diecast aluminum case that provides exceptional RF shielding. The enclosure is physically small (4.57″ x 3.03″ x 1.48″, 16cm x 7.7cm x 3.8cm), so it can be located conveniently.
The standard color for the case is Cobalt Blue, but we can also offer the following colors, depending on availability. Please contact us first if you wish to have a color other than Cobalt blue, as it may not be available straight away.
For more information on MC SUT's, and how to apply proper loading to cartridges, we suggest you visit this page, Applications Guide