Parasound HALO 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
- 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 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
How the JC 3+ improves on the original JC 3:
- 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 ESR power supply filter caps greater reserve for head-snapping dynamics.
- Ability to turn off illumination of the front panel P logo.
- Now Available in Black.
Specifications
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 Capacitance
150 pF
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: 437mm
Depth: 350mm
Height, with feet: 105mm
Height, without feet: 89mm
Weight
Net: 8.6 Kg
Shipping: 11.8 Kg
