HALO JC3 JR phono amp

Save £750.00

Price:
Sale price£1,749.00 Regular price£2,499.00

Drawing from the key elements invoked in the JC3+, the JC3 JR is a new, slimmer, lower cost Parasound 'Reference class' HALO Phono Pre-amplifier with many of the features and benefits of the multi-award winning JC3+!

The JC3 JR has also again been designed by the legendary pre-amp designer John Curl.

Although the unit is half the size, it hones in on some of the key features and performance of it's bigger family member. In terms of hardware and components there are certain core elements: Vishay-Dale resistors in the audio path, aluminium shielded power supply and audio circuits (with shielded toroid power transformer), high speed-soft recovery bridge rectifiers and common mode inductors, vampire brand 24k gold-plated RCA jacks and also Neutrik brand locking balanced XLR outputs connectors.

Again, certain key fundamentals can be seen in the acceptance of multiple cartridge options and loading options as there are cartridge options for 47k Ω MM and MC/MI, plus variable MC impedance adjustment of 50-550 ohms and also designated gain select for 40 dB/50 dB/60 dB unbalanced (46 dB/56 dB/66 dB balanced). On the performance front the shrewd design and performance seen in the larger JC3+ can be extended to the 'JR', with an RIAA accurate to within 0.2 dB alongside the incredibly consistent S/N up to 94 dB and THD less than 0.02%.

Currently shipping from our European warehouse - allow 7 days for delivery.

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
Aluminium 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)
Premium detachable heavy gauge IEC AC cord
1U Chassis, rack mountable with HRA1 (sold separately)

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 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 & Specification:
 230 VAC 50 - 60 Hz
 Standby:  Power On: 9 watts
Dimensions:
 Width: 437mm
 Depth: 375mm (Depth with cables: 432mm)
 Height: 63.5mm (Height without feet: 45mm)
Weight: 5.9 Kg

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