(Click to enlarge) JC 3+ Features Specs Reviews Support Designed by John Curl - creator of the legendary Vendetta Research phono preamp Inputs and outputs use Vampire brand 24k gold-plated RCA jacks Balanced outputs use Neutrik brand premium XLR jacks MM 47k ohm, MC 47k ohm or MC variable 50-550 Ohms RIAA accurate within 0.2 dB Exclusively Vishay-Dale resistors in the audio path Triple shielding; low-carbon mild steel partitions isolate the power supplies & AC wires Dual mono design; each audio channel is separately enclosed in its own extruded aluminum enclosure Separate high speed-soft recovery rectifiers, filter caps and voltage regulators for each channel Mono switch can improve sound of mono and older LPs Built-in AC line conditioner to prevent AC noise from polluting the circuits AC polarity reverse switch can reduce hum in many systems Non-magnetic aluminum rear panel for purest sound Turn On Options switch: manual or auto with 12v trigger input Premium detachable heavy gauge IEC AC cord 2u Chassis, rack mountable with HRA2 (sold separately) How the JC 3+ improves on the original JC 3: Variable MC load adjust independent for each channel from 50-550 ohms with dual gang potentiometers specially made for Parasound by Vishay. Curl-Thompson tweaked circuits to further reduce the JC 3 silent background noise. 24k gold plated copper traces on phono module boards for utmost conductivity and most transparency/detail in the music. 47% larger low ESD power supply filter caps greater reserve for head-snapping dynamics. 82% larger R-core power transformer greater reserve for more low end impact. Ability to turn off illumination of the front panel P logo. Now Available in Silver or Black.