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Parasound Halo JC 3+

Phono preamplifier by John Curl

Key Features

  • 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

FEATURED REVIEW


CUSTOMER Q & A

question

Answers

The Halo JC 3+ is a high-performance dual-mono phono preamplifier built with high-quality parts, solid construction, and a very clean design. It shares the ultra-quiet presentation of its older sibling as well as an expansive soundscape. And its tidy layout and shielded amplification modules significantly contribute to the final result.

The new Halo JC 3+model has a lot of improvements over the original, beginning with variable MC load impedance adjustment of 50-550 ohms for each channel using dual gang potentiometers specially made for Parasound by Vishay. This enables precise adjustment to optimize the sound of any MC cartridge. 

  • Circuit board enhancements:  The circuit board layout in the phono modules has been tweaked to further reduce its silent background noise. John Curl reduced 1/f “shot noise” going into the input stage. 
  • Upgraded power supply: The JC 3+ uses 47 percent larger low ESD power supply filter caps, which provide greater reserve for head-snapping dynamics. The additional reserves enable even greater bass slam and impact
  • Connections and cartridge loading: The JC 3+ is a dual mono design with unbalanced inputs and outputs using Vampire RCA jacks, plus balanced outputs using Neutrik XLR jacks.
  • Super-quiet R-core transformer:  The JC 3+ uses dual mono power supplies with an R-core rather than a toroidal transformer, since toroids have very high capacitive coupling between their primary and secondary which enables noise on the AC line to pass into the power supply and ultimately into the phono gain stages. 

Product Highlights

  • Variable MC load adjust independently 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.
  • Ability to turn off illumination of the front panel P logo.
  • Now Available in Silver or Black.
  • 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 the 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)

Dimensions and Warranty

  • 17-1/4" W  x  13-3/4" D  x  4-1/8" H (with feet) /  3-1/2" H (without feet) 
  • Weight:  19 lbs.
  • Warranty: 5 years 
  • Our 30-day money-back guarantee
  • MFR #

Additional information

Brand

Parasound

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