{"product_id":"pro-ject-accu-box-s2-battery-power-supply-silver","title":"Pro-Ject Accu Box S2 Battery Power Supply - Silver","description":"\u003ch2\u003e\u003cstrong\u003ePro-Ject Accu Box S2 Battery Power Supply – Silver\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eTake your hi-fi setup a step further with the Pro-Ject Accu Box S2 Battery Power Supply, a dedicated battery-powered upgrade designed for listeners who want cleaner power and better analogue performance. Built to work in perfect harmony with selected Pro-Ject phono stages, DACs and preamps, the Accu Box S2 helps unlock more detail, better separation and a more natural soundstage from your system.\u003c\/p\u003e\n\u003cp\u003eBy replacing a standard mains-powered supply with a clean battery-driven source, it reduces unwanted electrical noise and gives your audio components a more stable foundation to perform at their best.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eCleaner Power for Better Analogue Sound\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003ePower quality plays a major role in audio performance, especially with sensitive analogue components such as phono preamps. The Accu Box S2 is designed as a \u003cstrong\u003enon-switching battery power supply\u003c\/strong\u003e, delivering pure, stable current without the electrical interference often associated with conventional switching power supplies.\u003c\/p\u003e\n\u003cp\u003eThe result is an audible improvement in overall clarity, helping music sound cleaner, more focused and more refined.\u003c\/p\u003e\n\u003cp\u003eWhether you're listening to vinyl, digital files or streamed music, the difference can be heard in quieter backgrounds, improved detail retrieval and smoother presentation.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eImproves Space, Separation and Imaging\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eOne of the most noticeable upgrades when using the Accu Box S2 is the improvement in stereo imaging and instrument placement.\u003c\/p\u003e\n\u003cp\u003eBy feeding your audio component with cleaner energy, the soundstage feels wider and more open, with instruments and vocals occupying their own space more naturally. This creates a more organised and realistic listening experience, especially with detailed recordings.\u003c\/p\u003e\n\u003cp\u003eBass response can also feel tighter and better controlled, while midrange and treble gain extra transparency.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eHigh-Quality Battery Technology\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eInside the Accu Box S2 are \u003cstrong\u003efive rechargeable Li-Pol battery cells\u003c\/strong\u003e with a capacity of \u003cstrong\u003e2.6Ah\u003c\/strong\u003e, carefully chosen for reliable and consistent performance.\u003c\/p\u003e\n\u003cp\u003eBattery operation isolates connected equipment from mains interference during playback, allowing sensitive circuitry to work in cleaner electrical conditions.\u003c\/p\u003e\n\u003cp\u003eThis battery-based approach is especially beneficial for phono stages, where even small amounts of power noise can affect sound quality.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eBuilt-In Protection for Long-Term Reliability\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eTo help protect both the battery and connected equipment, the Accu Box S2 includes multiple protection systems:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOver-charge protection\u003c\/strong\u003e to prevent battery stress\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOver-discharge protection\u003c\/strong\u003e for healthier battery life\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOver-current protection\u003c\/strong\u003e for safe operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurge protection\u003c\/strong\u003e for improved component safety\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese built-in safeguards help ensure reliable long-term performance and maintain battery health over time.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eAdvanced Transformer Design for Stable Performance\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe internal design uses an \u003cstrong\u003eaudio-grade toroidal transformer\u003c\/strong\u003e, chosen for its low mechanical hum and efficient power delivery.\u003c\/p\u003e\n\u003cp\u003eCombined with \u003cstrong\u003ecopper foil shielding\u003c\/strong\u003e, the transformer helps reduce electromagnetic interference, keeping the power path cleaner and more stable.\u003c\/p\u003e\n\u003cp\u003eA \u003cstrong\u003esoft start system\u003c\/strong\u003e also prevents sudden current surges during power-up, reducing stress on internal components and connected devices.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003ePrecision Voltage Regulation\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Accu Box S2 uses carefully regulated secondary voltage rectification to maintain a stable and accurate output.\u003c\/p\u003e\n\u003cp\u003eThis consistent power delivery helps connected devices perform with greater precision, reducing fluctuations that could affect sound quality.\u003c\/p\u003e\n\u003cp\u003eWith \u003cstrong\u003e10,000 µF filtration capacity per output\u003c\/strong\u003e and \u003cstrong\u003elow ESR capacitors\u003c\/strong\u003e, the power remains smooth and highly filtered for improved audio stability.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eUSB Power Output for Added Flexibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn addition to powering compatible Pro-Ject audio products, the Accu Box S2 also features a \u003cstrong\u003e5V USB-A output\u003c\/strong\u003e, making it useful for powering selected DACs and digital components.\u003c\/p\u003e\n\u003cp\u003eThis adds extra flexibility, allowing you to cleanly power more than just phono stages.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eWide Compatibility Across Pro-Ject Ranges\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Accu Box S2 is compatible with a broad range of Pro-Ject products across the \u003cstrong\u003eS-Line\u003c\/strong\u003e, \u003cstrong\u003eE-Line\u003c\/strong\u003e and \u003cstrong\u003eDS-Line\u003c\/strong\u003e, including popular models like:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eS-Line:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eStream Box S2, Stream Box S2 Ultra, BT Box S2, Pre Box S2 Digital, Pre Box S2 Analogue, DAC Box S2 + Head Box S2 Tube Box S2, Head Box S2 Digital, Phono Box S2, Phono Box S2 Ultra, Phono Box S3 B, Vinyl NRS Box S3\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eE-Line:\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003eOptical Box E, Phono Phono Box E, Phono Box E BT, Record Box E\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDS-Line:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ePhono Box DS2, Phono Box DS2 USB, Tube Box DS2, DAC Box DS2 ultra, Pre Box DS2 Digital, Head Box DS2 B, Pre Box DS2 Analogue, , Tube Box DS3 B, Phono Box DS3 B, CD Box DS3\u003c\/p\u003e\n\u003cp\u003eThis makes it a valuable upgrade for many Pro-Ject owners looking to improve system performance.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-end battery-powered power supply for cleaner audio performance\u003c\/li\u003e\n\u003cli\u003eNon-switching power design for reduced electrical noise\u003c\/li\u003e\n\u003cli\u003eRechargeable Li-Pol battery system (2.6Ah)\u003c\/li\u003e\n\u003cli\u003eAudio-grade toroidal transformer\u003c\/li\u003e\n\u003cli\u003eCopper foil transformer shielding\u003c\/li\u003e\n\u003cli\u003eSoft start system for safer power-up\u003c\/li\u003e\n\u003cli\u003ePrecision voltage regulation\u003c\/li\u003e\n\u003cli\u003eHigh filtration capacity (10,000 µF per output)\u003c\/li\u003e\n\u003cli\u003eLow ESR capacitors for stable performance\u003c\/li\u003e\n\u003cli\u003eSurge protection and battery protection systems\u003c\/li\u003e\n\u003cli\u003e5V USB-A output for compatible DACs and accessories\u003c\/li\u003e\n\u003cli\u003eDesigned for selected Pro-Ject phono stages, DACs and preamps\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eA Serious Upgrade for Serious Listening\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-is-only-node=\"\" data-is-last-node=\"\"\u003eFor anyone looking to get more from their Pro-Ject system, the Accu Box S2 offers a practical and effective way to improve power quality. Cleaner power means cleaner sound—and with better detail, stronger imaging and quieter backgrounds, it’s an upgrade that can make a real difference to your listening experience.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable class=\"table specification-table\" style=\"width: 51.6071%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 49.7292%; text-align: left;\"\u003eOutputs\u003c\/th\u003e\n\u003ctd style=\"width: 49.9175%;\"\u003e1 x 18V\/1A (2.5mm)\n\u003cp class=\"br\"\u003e \u003c\/p\u003e\n1 x 5V\/1A (USB A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 49.7292%; text-align: left;\"\u003ePower Supply (Charger)\u003c\/th\u003e\n\u003ctd style=\"width: 49.9175%;\"\u003e21V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 49.7292%; text-align: left;\"\u003eDimensions W x H x D\u003c\/th\u003e\n\u003ctd style=\"width: 49.9175%;\"\u003e103 x 37 x 106mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 49.7292%; text-align: left;\"\u003eWeight\u003c\/th\u003e\n\u003ctd style=\"width: 49.9175%;\"\u003e545g (without psu)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cspan style=\"display: none;\" class=\"body-search-keyword\"\u003ePro-Ject Accu Box S2 Battery Power Supply - Silver, Pro-Ject, Accu, Box, S2, Battery, Power, Supply, Silver, ACCUBOXS2-SV, project ACCUBOXS2-SV, accubox\u003c\/span\u003e\u003c\/p\u003e","brand":"Pro-Ject","offers":[{"title":"Silver","offer_id":57216044138873,"sku":"2000004664","price":279.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0636\/8224\/8931\/files\/pro-ject-accu-box-s2-battery-power-supply-silver_1.jpg?v=1777969475","url":"https:\/\/www.electricshop.com\/products\/pro-ject-accu-box-s2-battery-power-supply-silver","provider":"electricshop.com","version":"1.0","type":"link"}