{"product_id":"naim-nap-500-dr-stereo-power-amplifier-with-500-ps-bundle-copy","title":"NAIM - NAP 500 DR  Stereo Power Amplifier with 500 PS Bundle (Open Box)","description":"\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003eNaim NAP 500 Reference Stereo Power Amplifier with 500 PS (open box)\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eNaim NAP 500\u003c\/strong\u003e is the reference stereo power amplifier from Naim's legendary 500 Series, engineered for systems where control, speed, dynamics and musical resolution matter far more than simply chasing the largest wattage number.\u003c\/p\u003e\n\u003cp\u003eDelivering \u003cstrong\u003e140 watts per channel into 8 ohms\u003c\/strong\u003e, the NAP 500 was developed over six years and employs an uncompromising \u003cstrong\u003etwo-chassis architecture\u003c\/strong\u003e, separating the amplifier itself from its massive dedicated \u003cstrong\u003e500 PS power supply\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe result is one of Naim's most ambitious power amplifier designs—a component built not simply to make loudspeakers play louder, but to exert extraordinary control over them while preserving the timing and musical information coming from the preamplifier.\u003c\/p\u003e\n\u003ch2\u003e140 Watts That Doesn't Tell the Whole Story\u003c\/h2\u003e\n\u003cp\u003eOn paper, the NAP 500 produces \u003cstrong\u003e140 watts per channel into 8 ohms\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThat's only part of the story.\u003c\/p\u003e\n\u003cp\u003eThe amplifier is designed to remain capable of sustained operation into loads as low as \u003cstrong\u003e2 ohms\u003c\/strong\u003e, allowing it to maintain control when loudspeaker impedance becomes considerably more demanding.\u003c\/p\u003e\n\u003cp\u003eThat's particularly important with reference loudspeakers, where impedance can vary dramatically depending on frequency.\u003c\/p\u003e\n\u003cp\u003eThe NAP 500 also offers \u003cstrong\u003e700VA of transient output capability\u003c\/strong\u003e, giving it the reserves required to reproduce sudden musical peaks with authority.\u003c\/p\u003e\n\u003cp\u003eThe objective isn't simply maximum volume.\u003c\/p\u003e\n\u003cp\u003eIt's effortless control.\u003c\/p\u003e\n\u003ch2\u003eA Fully Bridged Amplifier Design\u003c\/h2\u003e\n\u003cp\u003eThe NAP 500 uses a \u003cstrong\u003ebridged power amplifier configuration\u003c\/strong\u003e engineered to maximize both open- and closed-loop speed.\u003c\/p\u003e\n\u003cp\u003eEach channel incorporates \u003cstrong\u003eten stages of local regulation\u003c\/strong\u003e, an unusually elaborate approach designed to provide the amplifier circuitry with extremely stable power exactly where it is required.\u003c\/p\u003e\n\u003cp\u003eThat level of regulation reflects one of the central ideas behind Naim engineering:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe quality of the power feeding an audio circuit is inseparable from the performance of the audio circuit itself.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThat philosophy becomes even more obvious when you look at the other half of the NAP 500.\u003c\/p\u003e\n\u003ch2\u003eThe 500 PS: Power Gets Its Own Chassis\u003c\/h2\u003e\n\u003cp\u003eThe NAP 500 isn't a single-box amplifier.\u003c\/p\u003e\n\u003cp\u003eIts dedicated \u003cstrong\u003e500 PS power supply\u003c\/strong\u003e occupies an entirely separate chassis, physically removing the large transformer and associated electromagnetic interference from the sensitive amplifier circuitry.\u003c\/p\u003e\n\u003cp\u003eInside the 500 PS is an enormous \u003cstrong\u003e1,100VA toroidal transformer\u003c\/strong\u003e supplying \u003cstrong\u003e12 raw DC power feeds\u003c\/strong\u003e to the amplifier.\u003c\/p\u003e\n\u003cp\u003eSeparating the power supply from the amplifier circuitry creates a cleaner electrical environment while allowing Naim to build a considerably more substantial power supply than would normally share the same enclosure.\u003c\/p\u003e\n\u003cp\u003eThe NAP 500 and 500 PS aren't an amplifier with an optional upgrade.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThey're one amplifier designed as two components.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eDesigned for Difficult Loudspeakers\u003c\/h2\u003e\n\u003cp\u003eReference loudspeakers can present an amplifier with a far more difficult electrical load than their published specifications might suggest.\u003c\/p\u003e\n\u003cp\u003eNominal impedance doesn't tell you what happens when impedance drops dramatically during a demanding musical passage.\u003c\/p\u003e\n\u003cp\u003eThat's why the NAP 500's ability to operate into \u003cstrong\u003e2-ohm loads\u003c\/strong\u003e is important.\u003c\/p\u003e\n\u003cp\u003eCombined with its substantial power supply and transient capability, the amplifier is engineered to maintain its composure when the loudspeaker starts asking for serious current.\u003c\/p\u003e\n\u003cp\u003eBass control, dynamic contrasts and large musical peaks all depend on the amplifier's ability to respond quickly without losing control.\u003c\/p\u003e\n\u003cp\u003eThe NAP 500 was designed for exactly that job.\u003c\/p\u003e\n\u003ch2\u003eSpeed Matters as Much as Power\u003c\/h2\u003e\n\u003cp\u003eA reference power amplifier shouldn't simply be powerful.\u003c\/p\u003e\n\u003cp\u003eIt needs to be fast.\u003c\/p\u003e\n\u003cp\u003eThe NAP 500's frequency response extends from approximately \u003cstrong\u003e1.5Hz to 100kHz at -3dB\u003c\/strong\u003e, giving the amplifier bandwidth far beyond the audible range.\u003c\/p\u003e\n\u003cp\u003eThat isn't because anyone needs to listen to a 100kHz tone.\u003c\/p\u003e\n\u003cp\u003eWide bandwidth and carefully controlled circuit speed contribute to the amplifier's ability to respond quickly to changes in the incoming signal.\u003c\/p\u003e\n\u003cp\u003eFor Naim, that ability to follow the timing, attack and decay of music has always been central to the listening experience.\u003c\/p\u003e\n\u003ch2\u003eSerious Thermal Management\u003c\/h2\u003e\n\u003cp\u003eThe NAP 500's substantial black-anodized chassis incorporates its distinctive heatsink structure as part of the amplifier's thermal management system.\u003c\/p\u003e\n\u003cp\u003eNaim also incorporates an \u003cstrong\u003eintelligent variable-speed fan system\u003c\/strong\u003e that can provide additional cooling when operating conditions require it.\u003c\/p\u003e\n\u003cp\u003eRather than running continuously, additional cooling is available when necessary, allowing the amplifier to maintain appropriate operating conditions during demanding listening sessions.\u003c\/p\u003e\n\u003cp\u003eAt approximately \u003cstrong\u003e55 pounds for the amplifier chassis alone\u003c\/strong\u003e, there isn't much about the NAP 500 that's lightweight.\u003c\/p\u003e\n\u003ch2\u003eBuilt in Salisbury\u003c\/h2\u003e\n\u003cp\u003eThe NAP 500 was developed as the debut product of Naim's reference 500 Series.\u003c\/p\u003e\n\u003cp\u003eIts development required years of work with specialist component suppliers, and construction involves extensive assembly by Naim's experienced technicians in Salisbury, England.\u003c\/p\u003e\n\u003cp\u003eThat approach makes sense when you look inside the architecture.\u003c\/p\u003e\n\u003cp\u003eThis isn't simply a larger version of a conventional stereo amplifier.\u003c\/p\u003e\n\u003cp\u003eThe bridged topology, extensive local regulation, separate 500 PS, custom power architecture and mechanical construction all reflect a product developed without the constraints normally associated with mass-market electronics.\u003c\/p\u003e\n\u003ch2\u003eThe Natural Partner for the NAC 552\u003c\/h2\u003e\n\u003cp\u003ePair the \u003cstrong\u003eNAP 500\u003c\/strong\u003e with the \u003cstrong\u003eNAC 552 Reference Preamplifier\u003c\/strong\u003e and the logic behind Naim's 500 Series becomes particularly clear.\u003c\/p\u003e\n\u003cp\u003eThe NAC 552 separates its sensitive preamplifier circuitry from its dedicated 552 PS.\u003c\/p\u003e\n\u003cp\u003eThe NAP 500 does essentially the same thing at the power-amplifier level with the 500 PS.\u003c\/p\u003e\n\u003cp\u003eSource, preamplification and power amplification remain individually optimized, while dedicated power supplies keep large transformers and their associated electrical noise away from the most sensitive audio circuitry.\u003c\/p\u003e\n\u003cp\u003eIt's a very Naim way of building a reference system.\u003c\/p\u003e\n\u003cp\u003eAnd it's about as far removed from an all-in-one amplifier as you can get.\u003c\/p\u003e\n\u003ch2\u003eNaim NAP 500 Specifications\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eType:\u003c\/strong\u003e Reference Two-Channel Power Amplifier\u003cbr\u003e\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Two chassis — NAP 500 + 500 PS\u003cbr\u003e\u003cstrong\u003ePower Output:\u003c\/strong\u003e 140 watts per channel into 8 ohms\u003cbr\u003e\u003cstrong\u003eMinimum Load Impedance:\u003c\/strong\u003e 2 ohms\u003cbr\u003e\u003cstrong\u003eTransient Capability:\u003c\/strong\u003e 700VA\u003cbr\u003e\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e -3dB at 1.5Hz and 100kHz\u003cbr\u003e\u003cstrong\u003eGain:\u003c\/strong\u003e +30dB\u003cbr\u003e\u003cstrong\u003eInput Impedance:\u003c\/strong\u003e 18kΩ\u003c\/p\u003e\n\u003ch3\u003eAnalog Inputs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2 x XLR\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpeaker Outputs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLeft and Right\u003c\/li\u003e\n\u003cli\u003e4mm banana connections\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eNAP 500 Power Amplifier\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e\u003cbr\u003e17.01\" W x 6.30\" H x 14.72\" D\u003cbr\u003e(432 x 160 x 374 mm)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e\u003cbr\u003e55.1 lbs. (25 kg)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFinish:\u003c\/strong\u003e\u003cbr\u003eBrushed black-anodized aluminum\u003c\/p\u003e\n\u003ch2\u003e500 PS Dedicated Power Supply\u003c\/h2\u003e\n\u003cp\u003eAt the heart of the NAP 500 system is its dedicated \u003cstrong\u003e500 PS external power supply\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe 500 PS features:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMassive \u003cstrong\u003e1,100VA toroidal transformer\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e12 raw DC supplies for the power amplifier\u003c\/li\u003e\n\u003cli\u003eSeparate chassis for improved electromagnetic isolation\u003c\/li\u003e\n\u003cli\u003eDedicated connection to the NAP 500\u003c\/li\u003e\n\u003cli\u003ePower-Line mains cable\u003c\/li\u003e\n\u003cli\u003eBurndy connection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eMains Supply:\u003c\/strong\u003e\u003cbr\u003e100V, 115V or 230V; 50\/60Hz depending on market configuration\u003c\/p\u003e\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNaim NAP 500 Reference Stereo Power Amplifier\u003c\/li\u003e\n\u003cli\u003eNaim 500 PS Dedicated Power Supply\u003c\/li\u003e\n\u003cli\u003eNaim Power-Line mains cable\u003c\/li\u003e\n\u003cli\u003eBurndy connection\u003c\/li\u003e\n\u003cli\u003eRequired factory accessories and documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eThe Grid's Take on the NAP 500\u003c\/h2\u003e\n\u003cp\u003eThe NAP 500 is a good example of why we don't recommend choosing an amplifier based solely on its wattage rating.\u003c\/p\u003e\n\u003cp\u003eThere are amplifiers advertising considerably more than 140 watts per channel.\u003c\/p\u003e\n\u003cp\u003eThat's not the point.\u003c\/p\u003e\n\u003cp\u003eThe engineering story here is \u003cstrong\u003ehow those 140 watts are delivered\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eA separate 1,100VA power supply. Twelve raw DC feeds. Ten stages of local regulation per channel. Bridged amplifier topology. 700VA transient capability. Stability into demanding 2-ohm loads.\u003c\/p\u003e\n\u003cp\u003eNaim has put an extraordinary amount of engineering around the simple task of taking the signal from the preamplifier and controlling a pair of loudspeakers.\u003c\/p\u003e\n\u003cp\u003eThat's what makes the \u003cstrong\u003eNAC 552 + NAP 500\u003c\/strong\u003e combination so compelling.\u003c\/p\u003e\n\u003cp\u003eThe NAC 552 is designed to preserve the signal.\u003c\/p\u003e\n\u003cp\u003eThe NAP 500 is designed to take control of the loudspeaker.\u003c\/p\u003e\n\u003cp\u003eTogether, they represent one of the defining reference systems in Naim's classic separates lineup.\u003c\/p\u003e\n\u003cp\u003eAt \u003cstrong\u003eThe Grid HiFi\u003c\/strong\u003e, we can help configure the NAP 500 as part of a complete reference Naim system, including preamplification, source components, loudspeaker matching, cabling, equipment support and system setup.\u003c\/p\u003e","brand":"Naim","offers":[{"title":"Default Title","offer_id":54805925298513,"sku":"NAIMNAP500-DR","price":31999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1047\/7178\/0945\/files\/nap500_1.jpg?v=1786058244","url":"https:\/\/gridhifi.com\/products\/naim-nap-500-dr-stereo-power-amplifier-with-500-ps-bundle-copy","provider":"The Grid","version":"1.0","type":"link"}