{"product_id":"audioquest-preamp-jumper","title":"AudioQuest PreAmp-Jumper","description":"\u003cp\u003eThe AudioQuest PreAmp-Jumper is a pair of short RCA bridges with a solid Perfect-Surface Copper+ conductor that replaces the factory sheet-metal straps between Pre-Out and Main-In in an integrated amplifier. Each bridge measures roughly 13 centimeters and has gold-plated RCA connectors at both ends.\u003c\/p\u003e\n\u003cp\u003eHardly any component is so reliably overlooked – probably because most owners have never consciously looked at it.\u003c\/p\u003e\n\u003ch2\u003eWhat Pre-Out and Main-In actually are\u003c\/h2\u003e\n\u003cp\u003eAn integrated amplifier internally consists of two devices: the preamp, which selects sources and controls the volume, and the power amp, which turns that into power for the speakers. Many manufacturers bring both sections out to the back panel – Pre-Out is the preamp's output, Main-In the power amp's input. That lets you insert a separate power amp or an external sound processor between them later. As long as you don't do that, the connection needs to stay closed, and two small metal straps come included from the factory for exactly that.\u003c\/p\u003e\n\u003ch2\u003eWhy these straps get in the way\u003c\/h2\u003e\n\u003cp\u003eThe entire music signal between preamp and power amp passes through them – at a low-level point where any interference gets amplified along with the signal later on. A stamped piece of sheet metal is the cheapest conceivable component for this. The PreAmp-Jumper puts a solid, direction-controlled PSC+ conductor with polyethylene air-tube insulation and gold-plated contacts in that exact same spot.\u003c\/p\u003e\n\u003ch3\u003eWho is the PreAmp-Jumper for – and who isn't it for?\u003c\/h3\u003e\n\u003cp\u003eFor any integrated amplifier or receiver with separate Pre-Out\/Main-In sockets on the back panel. Honestly: if that separation is missing, there's simply nothing to replace – and on some devices the bridge sits internally, in which case it stays where it is. A look at the back panel or the manual clarifies this in a minute, and we're happy to take a look with you.\u003c\/p\u003e\n\u003ch2\u003eOur verdict\u003c\/h2\u003e\n\u003cp\u003eNo modification, no tools, no warranty risk – just pull off two straps and plug in two proper conductors. The effect is fine-tuning, not a new device, and it's more noticeable on high-resolution systems than on compact ones. At HD Zürisee in Wädenswil, we'll tell you beforehand whether your amplifier is even built for this.\u003c\/p\u003e\n\u003ch2\u003eTechnical data\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eType:\u003c\/strong\u003e preamp bridge for Pre-Out\/Main-In\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eConductor:\u003c\/strong\u003e solid Perfect-Surface Copper+ (PSC+)\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eInsulation:\u003c\/strong\u003e polyethylene air-tube\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eConnection type:\u003c\/strong\u003e RCA, plug to plug\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eConnector coating:\u003c\/strong\u003e gold-plated\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eLength per bridge:\u003c\/strong\u003e roughly 13 cm (5 inches)\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eInstallation:\u003c\/strong\u003e plug-in, no soldering, no opening the device\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePrerequisite:\u003c\/strong\u003e amplifier with separate Pre-Out and Main-In sockets\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eIncluded:\u003c\/strong\u003e 2 bridges (for the left and right channel)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003ch3\u003eHow do I tell if my amplifier has Pre-Out and Main-In?\u003c\/h3\u003e\n\u003cp\u003eLook at the back panel: two pairs of RCA sockets next to each other, labeled Pre-Out and Main-In and connected by small U-shaped metal straps – that's the spot you're looking for. If you don't find any such straps, the connection is resolved internally and the jumper won't do anything for you.\u003c\/p\u003e\n\u003ch3\u003eWhy are there two bridges in the set?\u003c\/h3\u003e\n\u003cp\u003eBecause stereo has two channels. One bridge goes to the left channel, one to the right. That's all you need for a classic integrated amplifier. With multi-channel receivers that have Pre-Out for every channel, the requirement rises according to the number of bridged paths.\u003c\/p\u003e\n\u003ch3\u003eDo I lose my amplifier's warranty by doing this?\u003c\/h3\u003e\n\u003cp\u003eNo. You don't open anything or modify the device – you're just swapping out an accessory part that's accessible from outside. Keep the original straps anyway: on a later resale, they're part of the included scope, and for a service case, you'll want the device in its as-delivered state.\u003c\/p\u003e\n\u003ch3\u003eWhy get the PreAmp-Jumper from HD Zürisee?\u003c\/h3\u003e\n\u003cp\u003eBecause we check first whether your model even offers that separation, instead of just shipping it out. We know details like this from daily work on customer systems. You can reach us at 044 680 22 00, via WhatsApp \u003ca href=\"https:\/\/wa.me\/41765342200\"\u003e076 534 22 00\u003c\/a\u003e (text only, no calls) and at shop@hdzuerisee.ch.\u003c\/p\u003e\n\u003ch2\u003eGoes well with\u003c\/h2\u003e\n\u003cp\u003eObvious companions: \u003ca href=\"\/en\/collections\/vollverstarker\"\u003eintegrated amplifiers\u003c\/a\u003e with Pre-Out, matching \u003ca href=\"\/en\/collections\/cinchkabel\"\u003eRCA cables\u003c\/a\u003e, and the rest of the \u003ca href=\"\/en\/collections\/audioquest\"\u003eAudioQuest range\u003c\/a\u003e.\u003c\/p\u003e","brand":"AudioQuest","offers":[{"title":"Default Title","offer_id":53020001665360,"sku":null,"price":54.95,"currency_code":"CHF","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0932\/3262\/8048\/files\/audioquest-preamp-jumper-setansicht.png?v=1785437772","url":"https:\/\/hdzuerisee.ch\/en\/products\/audioquest-preamp-jumper","provider":"HD Zürisee AG","version":"1.0","type":"link"}