Dedicated phono preamp for MM/MC cartridges. JC3+ delivers clean analog sound with variable loading and vinyl clarity.
Read moreAt a glance
All specifications- Frequency Response
- 20 Hz - 20 kHz, +/- 0.2 dB
- Total Harmonic Distortion
- < 0.01% at 1 kHz
- Interchannel Crosstalk
- 72 dB at 1 kHz
- Input Capacitance
- 150 pF
- Total Gain
- MM: 48 dB MC: 64 dB
Overview
Rediscover Vinyl with Precision and Clarity
The Parasound JC3+ extracts every drop of warmth, detail, and emotion from your records—so your favorite albums sound alive and full of feeling.
Designed by legendary audio engineer John Curl, it features a dual-mono, all-analog architecture for ultra-low noise and stunning musicality. With support for both MM and MC cartridges (adjustable loading), and balanced XLR plus gold-plated RCA outputs, the JC 3+ integrates seamlessly into high-end analog systems.
Winner of The Absolute Sound’s Golden Ear Award (2025) plus:
Stereophile Recommended Components (2024 & 2025)
AVTech Media Awards “Best Phono Stage” (2015/16)
StereoTimes “Most Wanted Components” (2015)
Secrets of Home Theater & High Fidelity “Best of 2015”
Highlights
- 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
- 2u Chassis, rack mountable with HRA2 (sold separately)
Specifications
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 120 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)
Downloads
2
- JC3+ Phono Amp JC3+ ManualManual · English · PDF, 589 KBDownload
- JC3+ Phono Amp JC3+ Cut SheetDatasheet · English · PDF, 611 KBDownload
Awards and press
13
Thoroughly upgraded, the JC 3+ not only adds loading adjustments to the (now-discontinued) JC 3 but improvements to signal-to-noise, tweaks to the mm/mc gain stages, a beefier power supply, and a larger power transformer. With every rotation from an LP collection the JC 3+ conveys a heady mix of profound silence and kick-butt energy, a kiss of romance through the mids, and an ability to extract low-level information and define it in acoustic space.
The Absolute Sound May 2022John Curl's preamplifier achievements are legendary. The JC 3+ phono preamplifier expresses the character, verve and impact of all music genres with an insightful 'deep look' into the grooves of records. The JC 3+ is extremely satisfying and an outstanding value.
Input Audio April 2022Parasound’s JC 3+ Phono Amplifier is a masterpiece and its creators John Curl and Carl Thompson spared no expense to achieve sound quality and performance that is impeccable.
Audiotechnique (Hong Kong), March 2020Time has not dampened its sonic bona fides one iota. Its ability to see into a symphony orchestra and define each section is uncanny. Backgrounds remain eerily quiet, instrumental timbres ripe as plums, and channel separation exquisite.
The Absolute Sound September 2018Best Phono Stage.
AVTech Awards for 2015/16 (UK)The Parasound seems to infuse instruments with air and musical life. Soundstage depth cues seemed almost tube-like in their dimensionality, and instrumental and vocal layering often left me wide- eyed and slack-jawed. High-end sound reproduction doesn't get much better than this. Thoroughly and very highly recommended!
Stereo Times, March 2016Outstanding-amongst the best. The soundstage was tight and honed, delivery was crisp, precise and accurate... forceful and exciting. Vocals were nothing less than haunting, while the low noise design offered a clean and open presentation.
Hi-Fi World (UK) March 2016This sturdy, well-built, and - at nearly 20 pounds - quite beefy unit, represents electronics wunderkind John Curl's latest thinking on affordable phono pre-amplification. The results are magical: impressively wide dynamics, superb neutrality, excellent detail retrieval, wide staging, holographic imaging, and more than a whiff of the air and ambiance one gets from great tube gear. In the real world, it doesn't get much better.
Stereo Times Most Wanted Components 2015 AwardParasound's uncompromising approach has resulted in a truly stunning piece of gear. I'm confident that how the JC 3+ breathes life and energy into music is exceptional. After you've experienced it, it seems impossible to take even the smallest of steps backward. It invigorates everything it touches.
Secrets of Home Theater & High Fidelity Best of 2015The JC 3+ conveys a heady mix of profound silence and kick-butt energy.
The Absolute Sound 2016 High-End Buyer's GuideEssentially, the JC 3+ is an unerringly clean and crisp, modern-sounding design, yet one that remains fully able to communicate the alluring sound of vinyl replay.
HiFi News (UK) Finest Products 2015There is no shortage of phono stages on sale at the Parasound's price point, but the Halo JC 3+ stands out. A beautifully designed and built package, it boasts a good - if not totally comprehensive - range of facilities. Best of all is its superb sound quality; I have heard few better designs at any price, and the fact that it's able to achieve this for a sensible sum of money makes it an exceptional product.
HiFi News (UK) October 2015I'm confident that how the JC 3+ breathes life and energy into music is exceptional. After you've experienced it, it seems impossible to take even the smallest of steps backward. It invigorates everything it touches. The extraordinary thing is that every time you listen, it feels special and reminds you that this strange alchemy called audio sometimes fulfills its promise.
Home Theater HiFi (March 2015)
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