MC-2RR-H Moving coil step up transformer

600.00 Request

Moving coil step up transformer

  • Boost signal from magnetic cartridges for phono inputs
  • 31 dB of gain for low impedance (Ortofon) styluses
  • Passive SUT design does not add any system noise
  • Jensen equipped for the ultimate in pure tone

The MC-2RR-H is a passive device that employs two ultra high performance Jensen transformers to boost the low-level signal produced by a moving coil cartridge without any amplification or the associated noise that they produce.

The design begins with a 14 gauge steel casing to shield the low level signals from external magnetic fields and RF contamination. Gold-plated RCA input and output connector pairs are employed that will not tarnish over time, thus optimizing signal flow. Inside, each Jensen transformer is double shielded with heat treaded (annealed) nickel composite cans and supplemented with internal Faraday shielding to deliver over 145 dB of hum rejection at 60 Hz and then hand wired to the connectors in a twisted pair configuration. With less than 0.05% distortion, virtually zero phase shift and a frequency response that spans from 10 Hz to over 100 kHz, you can rest assured that the signal transfer is pure and uncolored.

Designed to boost the signal of low impedance moving coil cartridges (5 Ω or less), the MC-2RR-H employs a Jensen JT-34K-DX transformer with a 1:37 turns-ratio that adds 31 dB of noise-free gain. This is ideally suited for Ortofon or similar cartridges that are often selected by the most demanding audiophiles. Simply connect the turntable to the MC-2RR-H, the output signal to a standard RIAA phono input on the receiver or preamp and the MC-2RR-H will quietly do the work without adding noise, distortion or artifact.

Applications

Designed to boost the signal of low impedance moving coil cartridges (5 Ω or less), the MC-2RR-H employs a Jensen JT-34K-DX transformer with a 1:37 turns-ratio that adds 31 dB of noise-free gain. This is ideally suited for Ortofon or similar cartridges that are often selected by the most demanding audiophiles. Simply connect the turntable to the MC-2RR-H, the output signal to a standard RIAA phono input on the receiver or preamp and the MC-2RR-H will quietly do the work without adding noise, distortion or artifact.

Specifications

All levels are input unless noted.

PARAMETER CONDITIONS MINIMUM TYPICAL MAXIMUM
Input impedance, Zi 1kHz, -40 dBu, test circuit 1   31 Ω  
Voltage gain 1 kHz, -40 dBu, test circuit 1 30.95 dB 31.05 dB 31.15 dB
Magnitude response, ref 1 kHz

20 Hz, -40 dBu, test circuit 1

-0.5 dB

-0.37 dB

±0.0 dB

20 kHz, -40 dBu, test circuit 1 -0.1 dB -0.05 dB +0.1 dB
Deviation from linear phase (DLP) 20 Hz to 20 kHz, -40 dBu, test circuit 1   +7° +10°
Distortion (THD) 1 kHz, -60 dBu, test circuit 1   <0.001%  
20 Hz, -60 dBu, test circuit 1   0.125 % 0.25% 
Maximum 20 Hz input level 1% THD, test circuit 1 -26 dBu -23 dBu  
Common – mode rejection ratio (CMRR)  60 Hz, test circuit 2   145 dB   
3 kHz, test circuit 2  90 dB  106 dB  
 Output impedance, Zo 1 kHz, 50 mV RMS output, test circuit 1   4.85 kΩ   
 Turns ratio    1:36.69 1:36.71  1:36.73 
 Optimal cable length  Input      
Output   1 m (3’)   2 m (6’)
 Temperature range Operation or storage 0°C    70°C 
 Breakdown voltage* Primary or secondary to shield and case, 60 Hz, 1 minute test duration  250 V RMS    

 

*IMPORTANT NOTE: THIS PRODUCT IS NOT INTENDED FOR USE IN CIRCUMSTANCES WHERE THE DC OR PEAK AC VOLTAGE BETWEEN INPUT AND OUTPUT CONNECTIONS EXCEEDS 34 VOLTS OR WHERE ITS FAILURE COULD CAUSE INJURY OR DEATH.

Graphs

Phase Distortion
THD vs Frequency
THD vs Input
Frequency Response

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