The Jensen Transformers MC-2RR ISO-MAX Moving Coil Phono Cartridge Step-Up Transformer provides audiophile-quality level matching and isolation suitable for the finest analog audio playback systems.
Commonly known as an "SUT" (Step Up Transformer), the MC-2RR is a transformer-based, passive, stand-alone step-up device for use between a moving-coil phonograph needle cartridge and a conventional hi-hi phono preamp.
Two versions are available to satisfy a wide range of applications.
MC-2RR-L is the "low ratio" 1:10 step-up model, containing two JT-44K-DX step-up transformers. With this model, the audio signal coming from the m/c cartridge is increased by about 20dB.
The MC-2RR-H is the "high ratio" 1:37 step-up model, containing two JT-34K-DX step-up transformers. This model increases the audio signal coming from the m/c cartridge by about 31dB.
For most moving coil cartridges, we recommend the "L" version. The "H" version is only recommended for very low
impedance, low output cartridges that also require a resistive load of less than 100 Ohms. We have included a Selection Table (at
the upper right), but if you have any doubts as to which
model is most appropriate for your particular setup, please do not hesitate to contact us - we will be happy to make recommendations for
your specific equipment mix.
We have included a Selection Table (at the upper right), but if you have any doubts as to which model is most appropriate for your particular setup, please do not hesitate to contact us - we will be happy to make recommendations for your specific equipment mix.
Case dimensions for both models are 140mm L x 77mm W x 50mm H (~5.51" x 3.03" x 1.97") not including the small rubber feet.
With inferior products coming from all over the world, we think it is a genuine treasure to find a company like Jensen Transformers, actually designing and manufacturing some of the finest products in the world, right here in the USA, and we are proud to be able to offer their products. The MC-2RR is made in the USA, is backed by the manufacturer's comprehensive one-year warranty, and has a remarkable 20-year warranty on the transformer device itself.
Good cables are very important in the fight against hum and noise. You will need at least one pair of short patch cables in order to insert the MC-2RR into your signal path, and you may want to consider upgrading your existing cable(s) as well. The MC-2RR does not include any cables, but if you need them, we have some very high-performance unbalanced interconnect cables available. Please click here to see them!
Our Moving Coil Cartridge Transformers are now available in a Ready to Use Package
The input connectors can be seen on this end of ISO-MAX SUT.
Here is the output end of the MC-2RR. Notice that the more popular "-L" model is shown here, but we also have the "-H" version available (below) by special order.
The MC-2RR comes in the foam-lined box shown here, and we double-box it for safe shipment. We also include a printed copy of the transformer datasheet.
This Selection Table may help you decide between the "-L" and "-H" version of the MC-2RR SUT. PDF format.
Here is the datasheet for the JT-44K-DX step-up transformers used in the
MC-2RR-L model. Click to download PDF.
Datasheet for the JT-34K-DX step-up transformers used in the MC-2RR-H model. Click to download PDF.
Design excellence, high quality materials, meticulous workmanship, and superior service...put it all together and you get a superior product. Don't get stuck with bad advice, poor service, slow shipment or an inferior product. If you want the best, here it is.