{"product_id":"parasound-halo-jc-1-monoblock-power-amplifier-450w-john-curl-class-a","title":"Parasound Halo JC 1+ Monoblock Power Amplifier, 450W, John Curl, Class A","description":"\u003cp\u003eThe \u003cstrong\u003eParasound Halo JC 1+\u003c\/strong\u003e is a reference monoblock power amplifier designed by John Curl, delivering 450 watts into 8 ohms, 850 watts into 4 ohms, and over 1,300 watts into 2 ohms. It operates in pure Class A up to 25 watts and transitions to Class AB beyond that. It is sold as a single monoblock. A stereo system requires two units.\u003c\/p\u003e\n\n\u003cp\u003eThe JC 1+ is an evolution of the original JC 1, with upgrades across every critical area. Output power has increased from 400W to 450W at 8 ohms. Filter capacitance has risen from 132,000 to 198,000 microfarads across six Nichicon Gold Tune capacitors. The transformer has grown from 1.9 to 2.1 kVA. Output transistors have increased from 18 to 24 Sanken 60MHz devices. Peak current capacity is now 180 amps. Net weight has risen from 64 to 83 lbs (37.6 kg). ProHiFi is an authorised Parasound dealer in India.\u003c\/p\u003e\n\n\u003cp\u003eJohn Curl's new cascode driver stage, FR-408 input circuit board material for improved high-frequency signal integrity, Bybee Music Rails active noise filters, and a selectable gain switch (29dB or 23dB) are all new to the Plus. The input circuit board is shielded, output and power supply circuit boards use double-thickness copper, and all internal audio signal path connectors are gold-plated.\u003c\/p\u003e\n\n\u003cp\u003eStereophile listed the JC 1+ as a Recommended Component in 2024 and John Atkinson described its dynamics as extraordinary and its high frequencies as smooth and clean, more like a good tube amplifier. The Absolute Sound concluded that the JC 1+ comes so close to the best in so many categories that for more than a few listeners it may seem pointless to look elsewhere. TONEaudio stated they had yet to hear a pair of solid-state amplifiers offering anywhere near this much sonic excellence for anywhere near the price. Secrets of Home Theater named it Best Monoblock Power Amplifier 2020.\u003c\/p\u003e\n\n\u003c!-- KEY FEATURES --\u003e\n\u003ch2\u003e\u003cspan style=\"color: #0F527F;\"\u003eKey Features\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e450W into 8 ohm; 850W into 4 ohm; 1300W into 2 ohm\u003c\/li\u003e\n\u003cli\u003e25W pure Class A (high bias); 10W Class A (low bias)\u003c\/li\u003e\n\u003cli\u003e180 amps peak current; slew rate greater than 130 V\/microsecond\u003c\/li\u003e\n\u003cli\u003eDesigned by John Curl; cascode driver stage; JFET input, MOSFET driver\u003c\/li\u003e\n\u003cli\u003e24 beta-matched Sanken 60MHz bipolar output transistors\u003c\/li\u003e\n\u003cli\u003e198,000 microfarad Nichicon Gold Tune filter capacitance\u003c\/li\u003e\n\u003cli\u003e2.1 kVA shielded toroid power transformer\u003c\/li\u003e\n\u003cli\u003eBybee Music Rails active high-frequency noise filters\u003c\/li\u003e\n\u003cli\u003eBalanced XLR and RCA inputs with loop-through outputs\u003c\/li\u003e\n\u003cli\u003eDual CHK Infinium 5-way speaker binding posts for bi-wiring\u003c\/li\u003e\n\u003cli\u003eGain switch: 29dB or 23dB selectable\u003c\/li\u003e\n\u003cli\u003e12V trigger and audio-sensing auto turn-on\u003c\/li\u003e\n\u003cli\u003e448 x 508 x 197mm; 37.6kg; Black or Silver\u003c\/li\u003e\n\u003cli\u003eStereophile Recommended 2024; TAS Editors' Choice; TONEaudio Exceptional Value 2020\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- WARRANTY --\u003e\n\u003ch2\u003e\u003cspan style=\"color: #0F527F;\"\u003eWarranty:\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e3-year manufacturer's warranty\u003c\/p\u003e\n\u003cdiv class=\"ph-warranty-box\"\u003e\u003c\/div\u003e\n\n\u003c!-- WHY CONSIDER --\u003e\n\u003ch2\u003e\u003cspan style=\"color: #0F527F;\"\u003eWhy Consider the Parasound Halo JC 1+\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003eThe JC 1+ is the right choice for listeners who want a reference-level monoblock power amplifier that is stable into any speaker load, delivers pure Class A warmth at normal listening levels, and has the current reserve to handle the most demanding dynamic peaks without compression. The Absolute Sound, Stereophile, TONEaudio, and Secrets of Home Theater have all independently concluded that the JC 1+ performs at a level far above its price point. With 180 amps of peak current, a damping factor above 1200, and stability into impedance dips below 1 ohm, it will get the best from any loudspeaker it is partnered with. For an Indian audiophile building the most capable two-channel system possible, a pair of JC 1+ monoblocks driven by a JC 2 BP or JC 3+ represents Parasound's ultimate expression.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cspan style=\"color: #0F527F;\"\u003eIdeal for\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eReference two-channel systems wanting maximum power, current, and Class A headroom\u003c\/li\u003e\n\u003cli\u003eDemanding speaker loads with impedance dips below 2 ohms\u003c\/li\u003e\n\u003cli\u003eSystems pairing with the Parasound JC 2 BP preamplifier or JC 3+ phono stage\u003c\/li\u003e\n\u003cli\u003eBi-wiring configurations using the dual CHK Infinium binding posts per channel\u003c\/li\u003e\n\u003cli\u003eListeners who value selectable gain (29dB\/23dB) for system matching flexibility\u003c\/li\u003e\n\u003cli\u003eHome cinema front channels needing reference-grade monoblock amplification\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- SPECIFICATIONS --\u003e\n\u003ch2\u003e\u003cspan style=\"color: #0F527F;\"\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cstyle\u003e\n  .ph-spec-wrap { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }\n  .ph-spec-wrap table { width: 100%; min-width: 360px; border-collapse: collapse; font-size: 0.95em; }\n  .ph-spec-wrap table thead th { text-align: left; padding: 9px 12px; border-bottom: 2px solid #222; font-family: Georgia, serif; }\n  .ph-spec-wrap table td { padding: 8px 12px; border-bottom: 1px solid #eee; vertical-align: top; }\n  .ph-spec-wrap table td:first-child { width: 42%; }\n  .ph-spec-wrap .ph-sec-hd td { font-weight: bold; font-size: 0.78em; text-transform: uppercase; letter-spacing: 0.05em; border-bottom: 1px solid #ddd; padding: 7px 12px; }\n  @media (max-width: 480px) {\n    .ph-spec-wrap table thead { display: none; }\n    .ph-spec-wrap table tr { display: block; margin-bottom: 12px; border: 1px solid #ddd; border-radius: 4px; overflow: hidden; }\n    .ph-spec-wrap .ph-sec-hd { display: block; }\n    .ph-spec-wrap .ph-sec-hd td { display: block; width: 100%; box-sizing: border-box; background: #f5f5f5; }\n    .ph-spec-wrap table td { display: block; width: 100% !important; box-sizing: border-box; border-bottom: 1px solid #eee; }\n    .ph-spec-wrap table td:first-child { font-weight: bold; background: #fafafa; }\n    .ph-spec-wrap table td:last-child { border-bottom: none; }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"ph-spec-wrap\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\n\u003ctr class=\"ph-sec-hd\"\u003e\u003ctd colspan=\"2\"\u003ePower Output\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Power (8 ohm)\u003c\/td\u003e\n\u003ctd\u003e450W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Power (4 ohm)\u003c\/td\u003e\n\u003ctd\u003e850W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Power (2 ohm)\u003c\/td\u003e\n\u003ctd\u003e1300W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClass A Power (High Bias)\u003c\/td\u003e\n\u003ctd\u003e25W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClass A Power (Low Bias)\u003c\/td\u003e\n\u003ctd\u003e10W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Current\u003c\/td\u003e\n\u003ctd\u003e180 amps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlew Rate\u003c\/td\u003e\n\u003ctd\u003eGreater than 130 V\/microsecond\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr class=\"ph-sec-hd\"\u003e\u003ctd colspan=\"2\"\u003eCircuit Design\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDesigner\u003c\/td\u003e\n\u003ctd\u003eJohn Curl\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopology\u003c\/td\u003e\n\u003ctd\u003eClass A\/AB monoblock; JFET input, MOSFET driver, bipolar output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Path\u003c\/td\u003e\n\u003ctd\u003eDirect-coupled; no capacitors or inductors in audio path\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDriver Stage\u003c\/td\u003e\n\u003ctd\u003eJohn Curl cascode circuit design\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Transistors\u003c\/td\u003e\n\u003ctd\u003e24 beta-matched Sanken 15A\/230V\/60MHz bipolar devices\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise Filtering\u003c\/td\u003e\n\u003ctd\u003eBybee Music Rails active high-frequency filters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Board Material\u003c\/td\u003e\n\u003ctd\u003eFR-408 (improved HF signal integrity)\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr class=\"ph-sec-hd\"\u003e\u003ctd colspan=\"2\"\u003ePerformance\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e2Hz to 120kHz, plus 0 \/ minus 2dB; 20Hz to 20kHz, plus 0 \/ minus 0.25dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD (Full Power)\u003c\/td\u003e\n\u003ctd\u003eLess than 0.15%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD (Typical Listening)\u003c\/td\u003e\n\u003ctd\u003eLess than 0.02%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntermodulation Distortion\u003c\/td\u003e\n\u003ctd\u003eLess than 0.03%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTIM\u003c\/td\u003e\n\u003ctd\u003eUnmeasurable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDamping Factor\u003c\/td\u003e\n\u003ctd\u003eGreater than 1200 at 20Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSNR (A-weighted, Low Bias)\u003c\/td\u003e\n\u003ctd\u003eGreater than 122dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSNR (A-weighted, High Bias)\u003c\/td\u003e\n\u003ctd\u003eGreater than 120dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSNR (Unweighted, Low Bias)\u003c\/td\u003e\n\u003ctd\u003eGreater than 113dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGain\u003c\/td\u003e\n\u003ctd\u003e29dB (normal) \/ 23dB (low); rear panel selectable\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr class=\"ph-sec-hd\"\u003e\u003ctd colspan=\"2\"\u003ePower Supply\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMain Transformer\u003c\/td\u003e\n\u003ctd\u003e2.1 kVA shielded toroid with premium H18 grade core\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Stage Transformer\u003c\/td\u003e\n\u003ctd\u003eSeparate R-core transformer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Capacitance (Output)\u003c\/td\u003e\n\u003ctd\u003e198,000 microfarad (6 x 33,000 microfarad Nichicon Gold Tune)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Capacitance (Input Stage)\u003c\/td\u003e\n\u003ctd\u003e22,400 microfarad (independent supply)\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr class=\"ph-sec-hd\"\u003e\u003ctd colspan=\"2\"\u003eInputs and Outputs\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBalanced XLR Input\u003c\/td\u003e\n\u003ctd\u003e1 (Neutrik locking; with loop-through output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRCA Input\u003c\/td\u003e\n\u003ctd\u003e1 (Vampire 24k gold-plated; with loop-through output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpeaker Binding Posts\u003c\/td\u003e\n\u003ctd\u003e2 x CHK Infinium custom 5-way (for bi-wiring)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Impedance (Unbalanced)\u003c\/td\u003e\n\u003ctd\u003e50k ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Impedance (Balanced)\u003c\/td\u003e\n\u003ctd\u003e100k ohm (50k ohm per leg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr class=\"ph-sec-hd\"\u003e\u003ctd colspan=\"2\"\u003eControl and Protection\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAuto Turn-on\u003c\/td\u003e\n\u003ctd\u003e12V trigger or audio sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003eDC servo, relay protection, AC inrush surge protection with relay bypass\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr class=\"ph-sec-hd\"\u003e\u003ctd colspan=\"2\"\u003ePower\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandby\u003c\/td\u003e\n\u003ctd\u003eLess than 1W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIdle (Low Bias)\u003c\/td\u003e\n\u003ctd\u003e145W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIdle (High Bias)\u003c\/td\u003e\n\u003ctd\u003e275W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical Listening\u003c\/td\u003e\n\u003ctd\u003e400W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum\u003c\/td\u003e\n\u003ctd\u003e1500W\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr class=\"ph-sec-hd\"\u003e\u003ctd colspan=\"2\"\u003eGeneral\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (W x D x H)\u003c\/td\u003e\n\u003ctd\u003e448 x 508 x 197 mm (with feet)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e37.6 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable Finishes\u003c\/td\u003e\n\u003ctd\u003eBlack \/ Silver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRack Mounting\u003c\/td\u003e\n\u003ctd\u003e4U chassis; rack mount hardware included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Design\u003c\/td\u003e\n\u003ctd\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAwards\u003c\/td\u003e\n\u003ctd\u003eStereophile Recommended Component 2024; The Absolute Sound Editors' Choice 2022; Secrets Best Monoblock Power Amplifier 2020; TONEaudio Exceptional Value Award 2020; Positive Feedback Most Enthusiastically Recommended 2020\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- END ProHiFi Product Description --\u003e","brand":"Parasound","offers":[{"title":"Default Title","offer_id":45212043640855,"sku":null,"price":1355000.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0550\/6819\/6887\/files\/Parasound_Halo_JC_1_plus.webp?v=1781292460","url":"https:\/\/prohifi.in\/products\/parasound-halo-jc-1-monoblock-power-amplifier-450w-john-curl-class-a","provider":"ProHiFi India","version":"1.0","type":"link"}