Parasound Halo JC3+ Phono Preamplifier

Parasound Halo JC3+ Phono Preamplifier

Parasound's JC3+ is an improved version of the already exceptional JC3 Phono Preamplifier.





  • Designed by John Curl - creator of the legendary Vendetta Research phono preamp

  • Inputs and outputs use Vampire brand 24k gold-plated RCA jacks

  • 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.

  • 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

  • Superior R-core type power transformer

  • 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)





  • Frequency Response 20 Hz - 20 kHz, +/- 0.2 dB

  • Total Harmonic Distortion < 0.01% at 1 kHz

  • Signal to Noise Ratio, MM > 87 dB, input shorted, IHF A-weighted > 78 dB, input shorted, unweighted

  • Signal to Noise Ratio, MC > 87 dB, input shorted, IHF A-weighted > 67 dB, input shorted, unweighted

  • Interchannel Crosstalk 72 dB at 1 kHz

  • Input Impedance MM: 47k Ω MC: 50 - 550 Ω variable, 47k Ω fixed

  • Output Impedance Unbalanced: < 100 Ω Balanced: < 100 Ω per leg

  • Input Sensitivity at 1 kHz MM: 4mV for 1 V output MC: 600µV for 1 V output

  • Total Gain MM: 48 dB MC: 64 dB

  • XLR Pin Identification 1 = Ground (Shield) 2 = Positive 3 = Negative (Return)

  • AC Power Requirement Standby: 1 watt Power On: 12 watts 115 or 230 VAC 50 - 60 Hz (Selected on Chassis Bottom)

  • Dimensions Width: 17-1/4" (437mm) Depth: 13-3/4" (350mm) Height, with feet: 4-1/8" (105mm) Height, without feet: 3-1/2" (89mm)

  • Weight Net: 19 lbs. (8.6 Kg) Shipping: 26 lbs. (11.8 Kg)