{"product_id":"fiio-darkside-pro-low-noise-regulated-linear-power-supply","title":"FiiO Darkside Pro Low-noise regulated linear power supply","description":"\u003cp\u003eThe FiiO DARKSIDE PRO is a low-noise regulated linear power supply from FiiO’s DARKSIDE power purification series, made to give your hi-fi system an ultra-silent, pitch-black background so the music shines through. It replaces the switch-mode adapter of many FiiO desktop DACs, amplifiers and players with a clean 12V or 15V at up to 3A, from an audiophile-grade 75W toroidal transformer and a fully discrete regulator, with output noise as low as 17µV.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/fiio-darkside-pro-low-noise-regulated-linear-power-supply-photo-hero.jpg?v=1791340812\" alt=\"FiiO DARKSIDE PRO power supplies in silver and black\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3\u003eAn audiophile-grade 75W toroidal transformer\u003c\/h3\u003e\n\u003cp\u003eDesigned specifically for low-noise audio, the toroidal transformer uses a grain-oriented silicon steel core for higher efficiency and lower eddy currents, and a seamless, fold-free winding for a uniform magnetic field and minimal magnetic leakage. With 75W in reserve, it handles highly dynamic transients with ease, for solid bass extension and a vivid, clear soundstage.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/FIIODARKSIDEPRO_1000x696_caafbb5a-64b1-4b0a-a199-c285206b95d9.jpg?v=1790784957\" alt=\"Toroidal transformer inside the FiiO Darkside Pro\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3\u003eA fully discrete NMOS regulator\u003c\/h3\u003e\n\u003cp\u003eTwo high-current IRFZ34N MOSFETs work in parallel to lower internal resistance, improving dynamic range and preserving every nuance of the music. With a fully discrete regulator circuit and a high-precision LT431 reference, the DARKSIDE PRO achieves ultra-low noise (17µV at 12V and 30µV at 15V, A-weighted) and a lightning-fast transient response, while keeping heat down. A relay switches the transformer’s output to match the 12V or 15V setting precisely, which maximises efficiency and greatly reduces heat.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/fiio-darkside-pro-low-noise-regulated-linear-power-supply-photo-0.jpg?v=1791152380\" alt=\"Capacitor bank inside the FiiO Darkside Pro\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3\u003eAudiophile-grade components\u003c\/h3\u003e\n\u003cp\u003eA Japanese Shindengen D15XB60 bridge rectifier runs cool and stable, reducing micro-interference from current fluctuations. Five ELNA and seven Rubycon filter capacitors and two WIMA film capacitors filter out power-supply noise, and the DC cable uses monocrystalline silver-plated copper to cut transmission loss and shield against electromagnetic interference.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/fiio-darkside-pro-low-noise-regulated-linear-power-supply-photo-parts.jpg?v=1791340817\" alt=\"The bridge rectifier, capacitors and DC cable of the FiiO DARKSIDE PRO\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3\u003ePrecise and protected\u003c\/h3\u003e\n\u003cp\u003eA three-LED display shows the output voltage, and a precision potentiometer on the back lets you fine-tune it (by ±0.2V) with a small flat-head tool if the reading drifts. A self-resetting fuse protects against overcurrent, and a 1A\/250V input fuse protects the mains side.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/fiio-darkside-pro-low-noise-regulated-linear-power-supply-photo-protect.jpg?v=1791340823\" alt=\"The trim potentiometer and self-resetting fuse of the FiiO DARKSIDE PRO\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3\u003eA minimalist aluminium chassis\u003c\/h3\u003e\n\u003cp\u003eThe heavy unibody aluminium case shares the minimalist design of FiiO’s K13 series. Its weight and metal construction suppress resonance and block electromagnetic interference, cooling grilles keep it running cool, and it stacks neatly with other FiiO desktop units for a tidy, unified system.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/fiio-darkside-pro-low-noise-regulated-linear-power-supply-photo-stack.jpg?v=1791340829\" alt=\"FiiO DARKSIDE PRO stacked under a FiiO desktop unit\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3\u003eWhich devices it powers\u003c\/h3\u003e\n\u003cp\u003eFiiO lists the FiiO K11, K11 R2R, K13 R2R, \u003ca href=\"\/products\/fiio-k15-desktop-dac-and-headphone-amplifier\"\u003eK15\u003c\/a\u003e, \u003ca href=\"\/products\/fiio-k19-studio-grade-flagship-dac-and-headphone-amplifier\"\u003eK19\u003c\/a\u003e, \u003ca href=\"\/products\/fiio-r9-flagship-desktop-media-player-with-dual-es9038pro-dac-chip\"\u003eR9\u003c\/a\u003e, R7, TT13, the K5 Pro and K7 series and Q7, and FiiO portable players powered through USB-C, using a DC to USB-C adapter made for the DARKSIDE PRO (sold separately). Always set the 12V\/15V switch to suit your device before connecting it.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/FIIODARKSIDEPRO_1000x617_6935147e-dedf-484d-811d-d338915260e4.jpg?v=1790784956\" alt=\"Rear of the FiiO Darkside Pro with DC output and voltage switch\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eTransformer\u003c\/th\u003e\n\u003ctd\u003eToroidal, 75W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRegulator\u003c\/th\u003e\n\u003ctd\u003eFully discrete, 2 × IRFZ34N N-MOS in parallel + LT431 reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRectifier and capacitors\u003c\/th\u003e\n\u003ctd\u003eShindengen D15XB60 · 5 ELNA + 7 Rubycon filter capacitors · 2 WIMA film capacitors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput\u003c\/th\u003e\n\u003ctd\u003e12V or 15V DC (switchable), 0–3A · GX16-2 aviation socket · ±0.2V fine-tuning\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNoise\u003c\/th\u003e\n\u003ctd\u003e≤17µV (12V) · ≤30µV (15V), A-weighted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInput\u003c\/th\u003e\n\u003ctd\u003e220–240V or 100–120V AC (check the label) · 1A\/250V fuse · self-resetting overcurrent fuse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize and weight\u003c\/th\u003e\n\u003ctd\u003e188 × 188 × 42.3mm · about 2.2kg · black or silver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eGood to know\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe 12V\/15V switch must match the voltage your device needs; check its manual or rating label first.\u003c\/li\u003e\n\u003cli\u003eBefore connecting to the mains, check that the input voltage on the label matches your supply.\u003c\/li\u003e\n\u003cli\u003eFor a smaller supply, see FiiO’s \u003ca href=\"\/products\/fiio-pl50-low-noise-regulated-power-supply\"\u003ePL50\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eIn the box: DARKSIDE PRO, DC power cable, AC power cable, spare fuse, quick start guide and warranty card.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FiiO","offers":[{"title":"BLACK","offer_id":62725090345347,"sku":"FIIODARKSIDEPRO-BLACK","price":139.99,"currency_code":"GBP","in_stock":true},{"title":"SILVER","offer_id":62725090378115,"sku":"FIIODARKSIDEPRO-SILVER","price":139.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/FIIODARKSIDEPRO_a5bf5074-242d-4e61-b4f8-31b8f89addfb.jpg?v=1790785459","url":"https:\/\/www.advancedmp3players.co.uk\/products\/fiio-darkside-pro-low-noise-regulated-linear-power-supply","provider":"amp3","version":"1.0","type":"link"}