{"product_id":"nordost-qsource-linear-power-supply","title":"QSOURCE Linear Power Supply","description":"\u003cdiv class=\"pa-d5\" style=\"color:#080808;line-height:1.6;font-size:15px\"\u003e\n\u003cp style=\"margin:0 0 6px;font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:#8d1935;font-weight:600\"\u003eNordost · QRT\u003c\/p\u003e\n\u003cp style=\"margin:0 0 14px;font-size:18px;line-height:1.45;font-weight:600\"\u003eA fanless linear power supply built for audio: six DC outputs, four of them 5 V for QPOINTs and two selectable between 9 and 24 V for a streamer, switch, DAC or phono stage, with an internal QRT module cleaning the output.\u003c\/p\u003e\n\u003cp style=\"display:inline-block;margin:0 0 18px;padding:4px 10px;border:1px solid #d8d5ce;border-radius:2px;font-size:13px;color:#55524c\"\u003ePrice is for one power supply. QSOURCE DC cables (LEMO to LEMO, or LEMO to 5.5 × 2.1 or 2.5 mm) are specified per component and sold separately.\u003c\/p\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:#d8d5ce;border:1px solid #d8d5ce;margin:0 0 22px\"\u003e\n\u003cdiv style=\"background:#f7f6f2;padding:12px 14px\"\u003e\n\u003cdiv style=\"font-size:20px;font-weight:600;line-height:1.2\"\u003e6\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px;color:#55524c;line-height:1.35;margin-top:3px\"\u003eDC outputs: 4 × 5 V, 2 × selectable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#f7f6f2;padding:12px 14px\"\u003e\n\u003cdiv style=\"font-size:20px;font-weight:600;line-height:1.2\"\u003e9 to 24 V\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px;color:#55524c;line-height:1.35;margin-top:3px\"\u003eoutput A: 9, 12 or 19 V; output B: 12, 19 or 24 V\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#f7f6f2;padding:12px 14px\"\u003e\n\u003cdiv style=\"font-size:20px;font-weight:600;line-height:1.2\"\u003e75 dB\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px;color:#55524c;line-height:1.35;margin-top:3px\"\u003epower supply rejection ratio\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#f7f6f2;padding:12px 14px\"\u003e\n\u003cdiv style=\"font-size:20px;font-weight:600;line-height:1.2\"\u003eFanless\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px;color:#55524c;line-height:1.35;margin-top:3px\"\u003elinear, with an internal QRT module\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin:0 0 12px\"\u003eMost streamers, network switches, small DACs and phono stages ship with a switch-mode wall supply, and that is where a good deal of a digital system's noise comes from. The QSOURCE replaces it with a fanless linear supply designed for audio: a top-grade transformer and Nordost's own circuit convert AC to DC, and an internal QRT module removes noise artifacts from the line and smooths the DC output. Nordost quotes excellent regulation, very low ripple and fast transient response.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 12px\"\u003eIt was conceived to power up to four QPOINT Resonance Synchronizers from its 5 V outputs, but the two variable outputs make it a general-purpose upgrade: output A supplies 9, 12 or 19 V and output B 12, 19 or 24 V, each selected by a switch on the back, so one QSOURCE can run a QNET or QNET7 and a streamer or DAC at the same time. Nordost publishes a compatibility chart of popular components and the cable terminations they need.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 20px\"\u003eReviewing it for Positive Feedback, Marshall Nack wrote that the refinement the QSOURCE brought exceeded his expectations and that his search for a high-end linear supply ended there. We use it under every QNET and QNET7 we install, and it is the first upgrade we suggest for a wall-wart-powered streamer.\u003c\/p\u003e\n\u003ch3 style=\"margin:0 0 8px;font-size:16px\"\u003eKey technologies\u003c\/h3\u003e\n\u003cul style=\"margin:0 0 20px;padding-left:18px\"\u003e\n\u003cli style=\"margin:0 0 5px\"\u003e\n\u003cstrong\u003eLinear, fanless design.\u003c\/strong\u003e A top-of-the-line transformer and unique circuit design replace a switch-mode supply.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 5px\"\u003e\n\u003cstrong\u003eInternal QRT module.\u003c\/strong\u003e Removes electrical anomalies and noise artifacts from the line and smooths the DC output.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 5px\"\u003e\n\u003cstrong\u003eSix outputs.\u003c\/strong\u003e Four 5 V outputs for QPOINTs; two variable outputs selectable between 9 and 24 V.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 5px\"\u003e\n\u003cstrong\u003ePurpose-built DC cables.\u003c\/strong\u003e Micro Mono-Filament, shielded twisted-pair QSOURCE DC cables in LEMO and barrel terminations; a Premium version with 18 AWG conductors is available.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 5px\"\u003e\n\u003cstrong\u003eStand Mount.\u003c\/strong\u003e The QRT Stand Mount supports the QSOURCE on Sort Kones or lets it hang on a wall.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdetails open style=\"border-top:1px solid #080808;margin:0 0 6px\"\u003e\u003csummary style=\"cursor:pointer;padding:12px 0;font-size:16px;font-weight:600\"\u003eSpecifications\u003c\/summary\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;margin:0 0 14px\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003eLinear power supply, fanless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eAC input\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003eSwitchable 110\/220 V AC, 50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eAC fuse\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003e1.25 A time-lag, ceramic body\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eDC outputs\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003e4 × 5 V (5 W combined); output A 9\/12\/19 V; output B 12\/19\/24 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eOutput power\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003e66 W per variable output at 19 or 24 V; 20 W at 12 V; 10 W at 9 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003ePSRR\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003e75 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003e280 × 121 × 67 mm (11 × 4.75 × 2.625 in) with feet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003e2.7 kg (6 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eSold as\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003eSingle unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003eTwo-year limited\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp style=\"margin:0 0 14px;font-size:13px\"\u003e\u003ca href=\"https:\/\/www.nordost.com\/qrt\/qsource-linear-power-supply.php\" target=\"_blank\" rel=\"noopener\"\u003eNordost QSOURCE product page, specifications and compatibility chart\u003c\/a\u003e Specifications from nordost.com and the Nordost USA price list (August 2026).\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"border-top:1px solid #080808;border-bottom:1px solid #080808;margin:0 0 22px\"\u003e\u003csummary style=\"cursor:pointer;padding:12px 0;font-size:16px;font-weight:600\"\u003eWhere it sits in the range\u003c\/summary\u003e\u003cdiv style=\"padding:0 0 14px\"\u003e\n\u003cp style=\"margin:0 0 8px\"\u003eNordost QRT power and network products, by price.\u003c\/p\u003e\n\u003cul style=\"margin:0;padding-left:18px\"\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/nordost-qsine\"\u003eNordost QSINE AC Enhancer\u003c\/a\u003e: passive plug-in, $325\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/nordost-qvibe-qv2\"\u003eNordost QVIBE QV2 AC Line Harmonizer\u003c\/a\u003e: active plug-in, $405\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/nordost-qwave\"\u003eNordost QWAVE AC Line Harmonizer\u003c\/a\u003e: active plug-in, $450\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/nordost-qpoint\"\u003eNordost QPOINT Resonance Synchronizer\u003c\/a\u003e: component-level resonance treatment, $875\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/nordost-qbase-qb4-mark-iii\"\u003eNordost QBASE QB4 Mark III\u003c\/a\u003e: four-outlet passive distribution, from $1,400\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/nordost-qbase-qb8-mark-iii\"\u003eNordost QBASE QB8 Mark III\u003c\/a\u003e: eight-outlet passive distribution, from $2,300\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNordost QSOURCE Linear Power Supply\u003c\/strong\u003e (this model)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/nordost-qnet-high-performance-audio-network-switch\"\u003eNordost QNET Network Switch\u003c\/a\u003e: five-port audio switch, $3,800\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/nordost-qsource-mkii-linear-power-supply\"\u003eNordost QSOURCE MKII Linear Power Supply\u003c\/a\u003e: high-power, dual transformers, $4,500\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/nordost-qnet7-network-switch\"\u003eNordost QNET7 Network Switch\u003c\/a\u003e: seven ports with SFP, nine power supplies, $5,500\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/nordost-qkore-ground-unit\"\u003eNordost QKORE Ground Unit\u003c\/a\u003e: parallel grounding, QKORE1, 3 and 6, from $3,000\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/nordost-qbase-reference\"\u003eNordost QBASE Reference (QB10)\u003c\/a\u003e: ten-outlet reference distribution with QRT inside, $18,000\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/nordost-qbase-supreme-reference\"\u003eNordost QBASE Supreme Reference\u003c\/a\u003e: Odin 2 wired, 32 A powerCON, $30,000\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/nordost-qbase-gold\"\u003eNordost QBASE Gold\u003c\/a\u003e: Odin Gold wired, 32 A powerCON, $45,000\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin:10px 0 0\"\u003eThe higher-powered \u003ca href=\"\/products\/nordost-qsource-mkii-linear-power-supply\"\u003eQSOURCE MKII\u003c\/a\u003e adds a second transformer and roughly twice the output for larger servers and multiple components.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/details\u003e\n\u003ch3 style=\"margin:0 0 8px;font-size:16px\"\u003eReviews\u003c\/h3\u003e\n\u003cul style=\"margin:0 0 22px;padding-left:18px\"\u003e\n\u003cli style=\"margin:0 0 5px\"\u003e\n\u003ca href=\"https:\/\/positive-feedback.com\/reviews\/hardware-reviews\/nordost-qsource-linear-power-supply\/\" target=\"_blank\" rel=\"noopener\"\u003ePositive Feedback: Nordost QSOURCE Linear Power Supply\u003c\/a\u003e (Marshall Nack, 2022)\u003c\/li\u003e\n\u003cli style=\"margin:0 0 5px\"\u003e\n\u003ca href=\"https:\/\/stereophile.com\/content\/nordost-qnet-network-switch-qsource-linear-power-supply\" target=\"_blank\" rel=\"noopener\"\u003eStereophile: Nordost QNet network switch and QSource linear power supply\u003c\/a\u003e (Jason Victor Serinus, October 2022)\u003c\/li\u003e\n\u003cli style=\"margin:0 0 5px\"\u003e\n\u003ca href=\"https:\/\/www.monoandstereo.com\/nordost-qnet-and-qsource-review\/\" target=\"_blank\" rel=\"noopener\"\u003eMono and Stereo: Nordost QNET and QSOURCE review\u003c\/a\u003e (Matej Isak, 2025)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"padding:16px 18px;background:#f7f6f2;border-left:3px solid #8d1935\"\u003e\n\u003cp style=\"margin:0 0 4px;font-weight:600\"\u003ePlan your Nordost system with Pearl Audio\u003c\/p\u003e\n\u003cp style=\"margin:0;font-size:14px\"\u003ePearl Audio is an authorized Nordost dealer and Nordost is the power, grounding and network foundation we recommend for high-end systems. We can plan power distribution, grounding, resonance control and the network path for your system and arrange an audition in our Portland showroom. Call \u003ca href=\"tel:+15032222599\"\u003e(503) 222-2599\u003c\/a\u003e or email \u003ca href=\"mailto:sales@pearlaudio.com?subject=Nordost%20QSOURCE%20Linear%20Power%20Supply\"\u003esales@pearlaudio.com\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Nordost","offers":[{"title":"Default Title","offer_id":50801274257506,"sku":"NORD-QSOURCE","price":2750.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2475\/2780\/files\/QSource-lightbox_8e8c0123-e050-47ce-91d0-73fb3e542768.jpg?v=1793318955","url":"https:\/\/pearlaudio.com\/products\/nordost-qsource-linear-power-supply","provider":"Pearl Audio","version":"1.0","type":"link"}