Features 

  • Circuitry designed by legendary John Curl
  • Circuit board layout by Carl Thompson
  • Cartridge options for 47k Ω MM and MC/MI
  • Variable MC impedance adjustment of 50-550 ohms
  • Gain select for 40 dB/50 dB/60 dB unbalanced (46 dB/56 dB/66 dB balanced)
  • Balanced and unbalanced outputs
  • Mono switch can improve sound of mono & older LPs
  • Convenient auto turn-on by 12V trigger
  • RIAA accurate to within 0.2 dB
  • Incredible S/N up to 94 dB and THD less than 0.02%
  • Vishay-Dale resistors in the audio path
  • Aluminum shield separates power supply and audio circuits
  • Shielded toroid power transformer
  • High speed-soft recovery bridge rectifiers and common mode inductors
  • Vampire brand 24k gold-plated RCA jacks
  • Neutrik brand locking balanced XLR outputs connectors
  • Compact 1U chassis (2.5" high with feet)
  • Available in silver or black

Parasound Halo JC 3 Jr. Phono Preamplifier by John Curl

C$2,100.00Price
  • Frequency Response: 20-20Khz, +/- 0.2dB

     

    Total Harmonic Distortion: < 0.02% at 1 kHz

     

    Signal to Noise Ratio, 40 dB Setting
       >85dB, input shorted, IHF A-weighted
       >80dB, input shorted, unweighted

     

    Signal to Noise Ratio, 50 dB Setting
       >89dB, input shorted, IHF A-weighted
       >84dB, input shorted unweighted

     

    Signal to Noise Ratio, 60 dB Setting
       > 94dB, input shorted, IHF A-weighted
       > 91dB, input shorted, unweighted

     

    Inter-channel Crosstalk: >80 dB at 1 kHz

     

    Input Impedance
       MM or MI: 47k Ω
       MC Variable: 50- 550 Ω

     

    Output Impedance

       Unbalanced: < 100 Ω
       Balanced: < 100 Ω per leg

     

    Input Capacitance: 150 pF

     

    Input Sensitivity at 1 kHz, 4mV Input
       40 dB: 4 mV for 450mV output
       50 dB: 4 mV for 1.4 Volts output
       60 dB: 4 mV for 4.25 Volts output

     

    Input Sensitivity at 1 kHz, 1V Output
       40 dB: 9 mV for 1.0 Volt output
       50 dB: 3 mV for 1.0 Volt output
       60 dB: 0.9 mV for 1.0 Volt output

     

    Total Gain
       40 dB / 50 dB / 60 dB (unbalanced output)
       46 dB / 56 dB / 66 dB (balanced output)

     

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

     

    AC Power Requirement
       Standby: <1 watt
       Power On: 9 watts
       115 VAC or 230 VAC 50 - 60 Hz

     

    Dimensions: 
       Width: 17-1/4" 
       Height without feet: 1-3/4" 
       Height with feet: 2-1/2"  
       Depth: 14-3/4" 

       Depth with cables: 17"
     

    Net Weight: 13 lbs. (5.9 kg)

     

    Shipping Weight: 19 lbs. (8.6 kg)