PARASOUND HALO JC3+

Phono Preamplifier by John Curl

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Parasound JC3 er en av John Curl’s legendariske phono forforsterkere. Hans tilnærming til å forsterke ekstremt lave signaler gir lytteren den beste sjansen til å oppleve musikken slik den er tenkt gjengitt. I Parasound JC 3 er den fysiske kretstopologi så kompakt som overhodet mulig for å minimalisere påvirkningen av ekstern støy. Hver kanal har sitt eget kretskort og hver kanal er helt lukket i sitt egen ekstruderte aluminiumshus. Dette huset skiller sensitive kretser fra strømforsyningen og fra eksterne støykilder.

Parasound JC 3 er en av Halo seriens i alt 8 modeller som er på Stereophil’s “Recommended Component” liste for 2015.

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
Superior R-core type power transformer
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
2u Chassis, rack mountable with HRA2 (sold separately)
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 ESD power supply filter caps greater reserve for head-snapping dynamics.
82% larger R-core power transformer greater reserve for more low end impact.
Ability to turn off illumination of the front panel P logo.
Now Available in Silver or Black.

» Tekniske data

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 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: 17-1/4" (437mm)
Depth: 13-3/4" (350mm)
Height, with feet: 4-1/8" (105mm)
Height, without feet: 3-1/2" (89mm) Weight
Net: 19 lbs. (8.6 Kg)
Shipping: 26 lbs. (11.8 Kg) Rack Mount Accessory
HRA 2 (may be purchased separately)

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