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Halo by Parasound® Phono Preamplifier
Model #: JC 3 Jr. Silver
136414
Parasound
At a Glance
The JC 3 Jr. is John Curl's ultimate value-engineered phono preamplifier. John Curl has designed acclaimed phono stage preamps for Vendetta research, Constellation Audio, Audible Illusions and for Parasound, whose JC 3+ is a Stereophile Class A Recommended Component. The JC 3 Jr. is his most affordable...ever.
Price Starting At
$1,699.00
Get to know this product.
- Circuitry designed by legendary John Curl
- Circuit board layout by Carl Thompson
- Cartridge options for 47k O 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)
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 O
- MC Variable: 50- 550 O
Output Impedance
- Unbalanced: < 100 O
- Balanced: < 100 O per leg
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
- 115 VAC or 230 VAC 50 - 60 H
Dimensions
- Depth without cables: 14.75
- Height without feet: 1.75
Useful Documents
Proposition 65 Warning for California Residents