{"product_id":"parasound-halo-a-52-5-channel-180w-power-amplifier-class-a-ab-john-curl","title":"Parasound Halo A 52+ 5-Channel 180W Power Amplifier, Class A\/AB, John Curl","description":"\u003cp\u003eThe \u003cstrong\u003eParasound Halo A 52+\u003c\/strong\u003e is a five-channel power amplifier designed by John Curl, delivering 180 watts per channel into 8 ohms and 255 watts into 4 ohms with all five channels driven simultaneously. It sits between the A 23+ stereo and A 51 five-channel amplifiers in the Parasound Halo lineup.\u003c\/p\u003e\n\u003cp\u003eThe A 52+ uses a high-bias Class A\/AB topology with a direct-coupled signal path containing no capacitors or inductors. Each channel is built as a separate module with its own independent power supply winding from the custom toroidal transformer. Peak current capacity is 45 amps per channel, and the damping factor exceeds 1100 at 20Hz. ProHiFi is an authorised Parasound dealer in India.\u003c\/p\u003e\n\u003cp\u003eBalanced XLR and gold-plated RCA inputs are provided for all five channels, with 12V trigger or audio-signal sensing for automatic turn-on. The 3U chassis includes rear carry handles and is rack-mountable with optional adaptors. A black anodised extruded front panel with solid aluminium end caps provides a clean, professional appearance.\u003c\/p\u003e\n\u003cp\u003eStereophile's Kalman Rubinson concluded he really liked the A 52+ in every way, praising its consistent soundstage with no blurring of individual voices or instrumental details. Sound and Vision described it as a versatile performer delivering clean power with ample headroom for both movies and music. Enjoy the Music noted it never gave ground to even the most demanding electrostatic speakers.\u003c\/p\u003e\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\u003e180W x 5 into 8 ohm; 255W x 5 into 4 ohm; all channels driven\u003c\/li\u003e\n\u003cli\u003e225W x 2 into 8 ohm; 350W x 2 into 4 ohm; 2 channels driven\u003c\/li\u003e\n\u003cli\u003eDesigned by John Curl; high-bias Class A\/AB topology\u003c\/li\u003e\n\u003cli\u003eDirect-coupled; no capacitors or inductors in signal path\u003c\/li\u003e\n\u003cli\u003e45A peak current per channel; slew rate greater than 130 V\/microsecond\u003c\/li\u003e\n\u003cli\u003eSeparate module per channel; independent transformer windings\u003c\/li\u003e\n\u003cli\u003eBalanced XLR and gold-plated RCA inputs for all 5 channels\u003c\/li\u003e\n\u003cli\u003eSNR greater than 112dB A-weighted; damping factor greater than 1100\u003c\/li\u003e\n\u003cli\u003eDC servo and relay protection; auto turn-on by 12V trigger or audio\u003c\/li\u003e\n\u003cli\u003e3U chassis; rear carry handles; rack mountable\u003c\/li\u003e\n\u003cli\u003e437 x 149 x 508mm; 25kg; Black\u003c\/li\u003e\n\u003cli\u003eStereophile Recommended; Sound and Vision Reviewed; Enjoy the Music Reviewed\u003c\/li\u003e\n\u003c\/ul\u003e\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\u003cbr\u003e\u003c\/div\u003e\n\u003c!-- WHY CONSIDER --\u003e\n\u003ch2\u003e\u003cspan style=\"color: #0f527f;\"\u003eWhy Consider the Parasound Halo A 52+\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003eThe A 52+ is the right choice for home cinema enthusiasts who want John Curl-designed multichannel amplification at a more accessible price than the A 51. With 180 watts per channel across all five channels driven simultaneously, it provides genuine headroom for demanding surround setups. Stereophile confirmed its consistent, unblurred soundstage, and Enjoy the Music demonstrated it could drive power-hungry electrostatic speakers without flinching. The separate channel modules and independent power supply windings give it a level of channel isolation and current delivery that integrated AV receiver amplification cannot match. For an Indian audiophile upgrading from AVR-powered speakers to dedicated amplification, the A 52+ is the most practical entry into Parasound's multichannel range.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: #0f527f;\"\u003eIdeal for\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHome cinema systems needing five channels of dedicated amplification\u003c\/li\u003e\n\u003cli\u003eListeners upgrading from AVR-powered speakers to separate amplification\u003c\/li\u003e\n\u003cli\u003eSurround processors and AV receivers with five-channel pre-outs\u003c\/li\u003e\n\u003cli\u003eSystems where the A 51 is more power than needed but AVR amplification is not enough\u003c\/li\u003e\n\u003cli\u003eDemanding speaker loads requiring 45A peak current and 255W into 4 ohms per channel\u003c\/li\u003e\n\u003cli\u003eRack-mounted installations requiring a 3U chassis with carry handles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- SPECIFICATIONS --\u003e\n\u003ch2\u003e\u003cspan style=\"color: #0f527f;\"\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h2\u003e\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\u003cdiv class=\"ph-spec-wrap\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr class=\"ph-sec-hd\"\u003e\n\u003ctd colspan=\"2\"\u003ePower Output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAll 5 Channels Driven (8 ohm)\u003c\/td\u003e\n\u003ctd\u003e180W x 5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAll 5 Channels Driven (4 ohm)\u003c\/td\u003e\n\u003ctd\u003e255W x 5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2 Channels Driven (8 ohm)\u003c\/td\u003e\n\u003ctd\u003e225W x 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2 Channels Driven (4 ohm)\u003c\/td\u003e\n\u003ctd\u003e350W x 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Current per Channel\u003c\/td\u003e\n\u003ctd\u003e45 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\u003ctr\u003e\n\u003ctd\u003eDynamic Headroom\u003c\/td\u003e\n\u003ctd\u003eGreater than 1.5dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"ph-sec-hd\"\u003e\n\u003ctd colspan=\"2\"\u003eCircuit Design\u003c\/td\u003e\n\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\u003eHigh-bias Class A\/AB; direct-coupled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Path\u003c\/td\u003e\n\u003ctd\u003eNo capacitors or inductors in signal path\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Architecture\u003c\/td\u003e\n\u003ctd\u003eSeparate module per channel; independent transformer windings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"ph-sec-hd\"\u003e\n\u003ctd colspan=\"2\"\u003ePerformance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e5Hz to 100kHz, plus 0 \/ minus 3dB; 20Hz to 20kHz, plus 0 \/ minus 0.3dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD (Full Power)\u003c\/td\u003e\n\u003ctd\u003eLess than 0.05%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD (Typical Listening)\u003c\/td\u003e\n\u003ctd\u003eLess than 0.03%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntermodulation Distortion\u003c\/td\u003e\n\u003ctd\u003eLess than 0.04%\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\u003eSNR (A-weighted)\u003c\/td\u003e\n\u003ctd\u003eGreater than 112dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSNR (Unweighted)\u003c\/td\u003e\n\u003ctd\u003eGreater than 102dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDamping Factor\u003c\/td\u003e\n\u003ctd\u003eGreater than 1100 at 20Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrosstalk at 1kHz\u003c\/td\u003e\n\u003ctd\u003eGreater than 78dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrosstalk at 20kHz\u003c\/td\u003e\n\u003ctd\u003eGreater than 63dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGain\u003c\/td\u003e\n\u003ctd\u003e29dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"ph-sec-hd\"\u003e\n\u003ctd colspan=\"2\"\u003ePower Supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMain Transformer\u003c\/td\u003e\n\u003ctd\u003eCustom toroidal with independent secondary windings per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Capacitance\u003c\/td\u003e\n\u003ctd\u003e100,000 microfarad\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"ph-sec-hd\"\u003e\n\u003ctd colspan=\"2\"\u003eInputs and Outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBalanced XLR Inputs\u003c\/td\u003e\n\u003ctd\u003e5 (one per channel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRCA Inputs\u003c\/td\u003e\n\u003ctd\u003e5 (gold-plated, one per channel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpeaker Terminals\u003c\/td\u003e\n\u003ctd\u003e5 pairs; heavy-duty gold-plated 5-way\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Impedance (Unbalanced)\u003c\/td\u003e\n\u003ctd\u003e47k ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Impedance (Balanced)\u003c\/td\u003e\n\u003ctd\u003e94k ohm (47k ohm per leg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"ph-sec-hd\"\u003e\n\u003ctd colspan=\"2\"\u003eControl and Protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAuto Turn-on\u003c\/td\u003e\n\u003ctd\u003e12V trigger or audio signal sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003eDC servo, relay protection circuits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFront Panel Indicators\u003c\/td\u003e\n\u003ctd\u003e5 x blue channel status LEDs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"ph-sec-hd\"\u003e\n\u003ctd colspan=\"2\"\u003eGeneral\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (W x H x D)\u003c\/td\u003e\n\u003ctd\u003e437 x 149 x 508 mm (with feet)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e25 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable Finishes\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChassis\u003c\/td\u003e\n\u003ctd\u003e3U; rear carry handles; rack mountable with optional adaptors\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 (Kalman Rubinson) 2018; Sound and Vision Reviewed 2018; HiFi Review Hong Kong Recommended 2018\u003c\/td\u003e\n\u003c\/tr\u003e\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":45214008213527,"sku":null,"price":655000.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0550\/6819\/6887\/files\/a52__front_black.webp?v=1781288656","url":"https:\/\/prohifi.in\/products\/parasound-halo-a-52-5-channel-180w-power-amplifier-class-a-ab-john-curl","provider":"ProHiFi India","version":"1.0","type":"link"}