{"product_id":"parasound-halo-jc-1-mono-power-amplifier","title":"Parasound Halo JC 1+ Mono Power Amplifier","description":"\u003cbody\u003e\n\n\n\u003cmeta charset=\"UTF-8\"\u003e\n\u003ctitle\u003eParasound Halo JC 1+ Mono Power Amplifier — Product Description\u003c\/title\u003e\n\n\n\u003cdiv style=\"max-width:720px;margin:0 auto;padding:32px 24px 48px 24px;background:#ffffff;\"\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:0 0 0.35em 0;font-weight:600;\"\u003eA Flagship Monoblock, Refined\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eThe Parasound Halo JC 1+ is the updated version of designer John Curl's original JC 1 monoblock. Parasound increased its output transistors from 18 to 24 per channel and raised power output along the way.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eEach JC 1+ delivers 450 watts into 8 ohms. That climbs to 850 watts into 4 ohms, and 1,300 watts into 2 ohms.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eA 180-amp peak current reserve and a 2.1kVA shielded toroidal transformer back up that output. Massive filter capacitance, rated at 198,000 microfarads, keeps power on tap even during the most demanding musical passages.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eA front-panel bias switch lets you choose 10 or 25 watts of pure Class A operation before the amp shifts into Class AB. It's your call between efficiency and the sound many listeners prize in Class A.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eBuilt With Headroom to Spare\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eA damping factor above 1,200 at 20Hz gives the JC 1+ exceptional control over a speaker's woofer. Signal-to-noise ratio exceeds 120dB, IHF A-weighted, even with the bias switch set to high.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eFrequency response spans 2Hz to 120kHz. That's a wider window than any source material actually uses, leaving the amp nothing but room to work within.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eDC servo and relay protection circuits guard both your speakers and the amplifier itself. AC inrush surge protection, with a relay bypass once the amp settles, protects it at power-up too.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eNeutrik locking XLR inputs, with loop outputs, join Vampire 24k gold-plated RCA inputs on the back panel. At 83 pounds each, these monoblocks are built to stay put once they're in place.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eWhat Reviewers Are Saying\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eGreg Weaver reviewed the JC 1+ for Positive Feedback on May 6, 2020. He wrote that its \"ability to render such authentic timbre, blistering attack, instrumental bloom and body...won me over in short order.\"\u003c\/p\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eHe added: \"if I were shopping for a pair of monoblocks under $25,000, the Parasound Halo JC 1+ would be my first choice.\"\u003c\/p\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eDave McNair reviewed it for PT.Audio on March 20, 2022. He said the amps have \"a cleanliness and abundance of power that works very well to unlock the potential in a lot of speakers.\"\u003c\/p\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eHis recommendation: anyone who \"needs lots of power and\/or wants very clean and clear power\" without paying for a small step of extra refinement from pricier rivals.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eWho Is This Amplifier Best For?\u003c\/h2\u003e\n\u003cul style=\"margin:0 0 0.9em 0;padding-left:1.4em;line-height:1.6;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eListeners chasing true reference-level power.\u003c\/strong\u003e 450 watts into 8 ohms, with a huge current reserve, covers nearly any speaker load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnyone building a dedicated monoblock system.\u003c\/strong\u003e Each channel gets its own fully independent amplifier and power supply.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOwners of demanding, current-hungry speakers.\u003c\/strong\u003e A damping factor above 1,200 and 180 amps of peak current handle difficult loads with ease.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eListeners who want the option of pure Class A sound.\u003c\/strong\u003e The front-panel bias switch lets you dial in Class A operation at lower listening levels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot the right fit for a compact rack or modest system.\u003c\/strong\u003e At 83 pounds per monoblock, these amps need real space and a serious equipment stand.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eHow Does It Connect to Your System?\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eConnect a preamp's balanced output to the locking XLR input for the lowest-noise connection, with a loop output available to daisy-chain a second amp. Vampire gold-plated RCA inputs work just as well for an unbalanced preamp.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eEach monoblock drives a single speaker channel, so a stereo system needs two units. Heavy-duty speaker binding posts on the back accept standard connectors or spades.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eGive each JC 1+ its own ventilated space, set directly on a sturdy shelf or floor rather than a lightweight rack.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003ePairs Well With\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eBuilding your system? Here are some great companions for the Parasound Halo JC 1+:\u003c\/p\u003e\n\u003cul style=\"margin:0 0 0.9em 0;padding-left:1.4em;line-height:1.6;\"\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.audioadvisor.com\/products\/%%GLOBAL_ShopPathSSL%%\/amplifiers-preamplifiers\/preamplifiers\/\" style=\"color:#8a5a2b;\"\u003ePreamplifiers\u003c\/a\u003e to feed each monoblock a clean, balanced signal\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.audioadvisor.com\/products\/%%GLOBAL_ShopPathSSL%%\/speakers\/floorstanding-speakers\/\" style=\"color:#8a5a2b;\"\u003eFloorstanding speakers\u003c\/a\u003e that can make full use of its power reserves\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.audioadvisor.com\/products\/%%GLOBAL_ShopPathSSL%%\/cables\/speaker-cables\/\" style=\"color:#8a5a2b;\"\u003eSpeaker cables\u003c\/a\u003e to connect to its heavy-duty binding posts\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.audioadvisor.com\/products\/%%GLOBAL_ShopPathSSL%%\/cables\/interconnect-cables\/\" style=\"color:#8a5a2b;\"\u003eInterconnect cables\u003c\/a\u003e in balanced XLR for the lowest-noise connection\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.audioadvisor.com\/products\/%%GLOBAL_ShopPathSSL%%\/furniture\/audio-racks\/\" style=\"color:#8a5a2b;\"\u003eAudio racks\u003c\/a\u003e built to support its substantial weight\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eHow is the JC 1+ different from the original JC 1?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eParasound increased the output transistor count from 18 to 24 per channel. Power output rose from 400 to 450 watts into 8 ohms, alongside other circuit refinements.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eDo I need two of these for a stereo system?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eYes. Each JC 1+ is a monoblock, meaning it amplifies a single channel. A stereo pair requires two units, one per speaker.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eWhat does the bias switch actually do?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eIt sets how much power runs in pure Class A before the amp shifts to Class AB, either 10 or 25 watts. Higher Class A bias runs the amp warmer but is favored by many listeners for its sound.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eHow much does each monoblock weigh?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003e83 pounds net, and about 107 pounds as shipped. Plan for a sturdy shelf or the floor rather than a standard equipment rack shelf.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eWhat's the warranty?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eParasound covers the Halo JC 1+ for five years, parts and labor.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eSee It in Action\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 0.5em 0;line-height:1.55;\"\u003eShane Lee pairs the JC 1+ with Focal Kanta No2 speakers for a listening review:\u003c\/p\u003e\n\u003ciframe width=\"100%\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/2Hixb86jxEw\" title=\"Parasound JC1+ Monoblock Amplifier Review w\/ Focal Kanta No2\" style=\"border:0;margin:0 0 0.9em 0;display:block;\" allowfullscreen\u003e\u003c\/iframe\u003e\n\u003cp style=\"margin:0 0 0.5em 0;line-height:1.55;\"\u003eThe Audio Analyst revisits the JC 1+ after extended listening time:\u003c\/p\u003e\n\u003ciframe width=\"100%\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/GTR7lAOvYnU\" title=\"E198: Revisiting the Parasound Halo JC1+ Amplifier\" style=\"border:0;margin:0 0 0.9em 0;display:block;\" allowfullscreen\u003e\u003c\/iframe\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eWhy Audio Advisor?\u003c\/h2\u003e\n\u003cul style=\"margin:0 0 0.9em 0;padding-left:1.4em;line-height:1.6;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003e40+ Years of Expertise\u003c\/strong\u003e — Since 1981, we’ve helped over a million music lovers find the right gear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e60-Day Money-Back Guarantee\u003c\/strong\u003e — Take your time. Listen, enjoy, and make sure it’s right for you.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReal Experts, Real Help\u003c\/strong\u003e — Our team is here to answer your questions at 800-942-0220, weekdays 9am–6pm EST.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree Shipping\u003c\/strong\u003e — On orders over $49, delivered to your door.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Payment Options\u003c\/strong\u003e — Financing available so you can start listening now.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eLearn More\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eWant to learn more about monoblock amplifiers, matching power to your speakers, or building a reference-level system? Visit our \u003ca href=\"https:\/\/learningcenter.audioadvisor.com\/\" style=\"color:#8a5a2b;\"\u003eLearning Center\u003c\/a\u003e for guides, tips, and expert advice.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\n\u003c\/body\u003e","brand":"Parasound","offers":[{"title":"New \/ Black \/ New","offer_id":45982212292781,"sku":"NEW-PAJC1P-BLK","price":8500.0,"currency_code":"USD","in_stock":true},{"title":"New \/ Black \/ Open Box","offer_id":45982212325549,"sku":"OPEN-PAJC1P-BLK","price":8500.0,"currency_code":"USD","in_stock":false},{"title":"Used \/ Black","offer_id":45982932762797,"sku":"USED-PAJC1P-BLK","price":10499.0,"currency_code":"USD","in_stock":false},{"title":"New \/ Silver \/ New","offer_id":45983274074285,"sku":"NEW-PAJC1P-SIL","price":8500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/3708\/1773\/files\/PAJC1P_BLK_02-Large__23923.1717094833.1280.1280_fc84e4e5-1197-471e-923d-861c96f46b01.jpg?v=1787152227","url":"https:\/\/www.audioadvisor.com\/products\/parasound-halo-jc-1-mono-power-amplifier","provider":"Audio Advisor","version":"1.0","type":"link"}