{"product_id":"cardas-hpi-headphone-interconnect-cable","title":"HPI Headphone Interconnect","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\"\u003eCardas · Headphone Cables\u003c\/p\u003e\n\u003cp style=\"margin:0 0 14px;font-size:18px;line-height:1.45;font-weight:600\"\u003eThe original portable-audio upgrade cable: a short 3.5 mm to 3.5 mm interconnect in Cardas copper for a DAP, phone or laptop feeding a portable amplifier or DAC.\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 cable.\u003c\/p\u003e\n\u003cdiv style=\"margin:0 0 22px\"\u003e\n\u003cp style=\"margin:0 0 8px;font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:#8d1935;font-weight:600\"\u003eOptions and pricing\u003c\/p\u003e\n\u003cdiv id=\"pa-cablecfg\" class=\"pa-cablecfg\" data-cfg='{\"kind\":\"product\",\"priceNote\":\"each, as configured\",\"note\":\"Choose 6 in (15 cm) for stacking a source on a portable amplifier, or 1 ft (30 cm) for side-by-side use.\"}'\u003e\u003cnoscript\u003e\u003cp style=\"margin:0;font-size:13px;color:#55524c\"\u003eTurn on JavaScript to use the cable configurator, or call (503) 222-2599 and we will configure it with you.\u003c\/p\u003e\u003c\/noscript\u003e\u003c\/div\u003e\n\u003c\/div\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\"\u003e3 conductors\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px;color:#55524c;line-height:1.35;margin-top:3px\"\u003e2 × 25.5 AWG + 1 × 23.5 AWG\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\"\u003eShielded\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px;color:#55524c;line-height:1.35;margin-top:3px\"\u003etwisted triad\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\"\u003e3.1 mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px;color:#55524c;line-height:1.35;margin-top:3px\"\u003eoutside diameter\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\"\u003e15 \/ 30 cm\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px;color:#55524c;line-height:1.35;margin-top:3px\"\u003elengths\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin:0 0 12px\"\u003eHeadphone Interconnects (HPI) bring Cardas sound to compact portable systems. Two 25.5 AWG and one 23.5 AWG Cardas Litz conductors with Golden Ratio stranding and PFA insulation form a shielded twisted triad bound in FEP tape with cotton fillers, under a PVC jacket just 3.1 mm across.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 20px\"\u003eThe standard termination is 3.5 mm stereo to 3.5 mm stereo, in 6 in (15 cm) and 1 ft (30 cm) lengths, hand terminated in Bandon, Oregon.\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\u003eUltra Pure Cardas Copper.\u003c\/strong\u003e Grade 1, 99.9999% pure oxygen-free copper, drawn and annealed slowly through silver dies, then given a single poly-nylon coat to prevent oxidation and crosstalk between strands.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 5px\"\u003e\n\u003cstrong\u003eGolden Ratio scaled Litz conductors.\u003c\/strong\u003e Multi-stranded conductors in which each layer of strands steps up in size by 1:1.618 from the centre outward, a Cardas patent that controls strand resonance.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 5px\"\u003e\n\u003cstrong\u003eShielded twisted triad.\u003c\/strong\u003e Three conductors bound in FEP tape with cotton fillers, shielded, under a slim PVC jacket.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 5px\"\u003e\n\u003cstrong\u003eMade in Bandon, Oregon.\u003c\/strong\u003e Every Cardas cable is built and hand terminated at the Cardas factory on the southern Oregon coast, and carries a transferable lifetime warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:0 0 8px;font-size:16px\"\u003eChoosing a length\u003c\/h3\u003e\n\u003cul style=\"margin:0 0 20px;padding-left:18px\"\u003e\n\u003cli style=\"margin:0 0 5px\"\u003e6 in (15 cm) suits a source strapped to a portable amplifier; 1 ft (30 cm) gives room for the two to sit side by side.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 5px\"\u003eFor a 3.5 mm to RCA connection into a hi-fi system, see the Cardas iLink.\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\"\u003e3.5 mm to 3.5 mm interconnect\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\"\u003eConductors\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003e2 × 25.5 AWG + 1 × 23.5 AWG Grade 1, 99.9999% OFC Litz, Golden Ratio stranding, PFA insulation\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\"\u003eGeometry\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003eShielded twisted triad bound in FEP tape with cotton fillers\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\"\u003eJacket\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003ePVC\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\"\u003eOutside diameter\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003e0.122 in (3.1 mm)\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\"\u003eTerminations\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003e3.5 mm stereo to 3.5 mm stereo\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\"\u003eLengths\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003e6 in (0.15 m) or 1 ft (0.3 m)\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 cable\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.cardas.com\/\" target=\"_blank\" rel=\"noopener\"\u003ecardas.com\u003c\/a\u003e · Specifications and pricing from the Cardas Spring 2025 Retail Catalog. Cable lengths are metric; Cardas builds any length to order.\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\"\u003eCardas headphone cables run from Parsec to Clear Beyond; all are built to order with the amplifier plug and headphone connectors you specify.\u003c\/p\u003e\n\u003cul style=\"margin:0;padding-left:18px\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eHPI Headphone Interconnect\u003c\/strong\u003e (this model): 3.5 mm to 3.5 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/cardas-ilink-cable\"\u003eiLink\u003c\/a\u003e: 3.5 mm to RCA for portable sources\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/cardas-parsec-headphone\"\u003eParsec Headphone\u003c\/a\u003e: shielded star-quad, the value pick\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin:10px 0 0\"\u003eWe stock or demo select Cardas lines and can order anything in the catalog, from Iridium to Clear Beyond.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/details\u003e\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 cabling with Pearl Audio\u003c\/p\u003e\n\u003cp style=\"margin:0;font-size:14px\"\u003ePearl Audio is an authorized Cardas dealer in Portland, Oregon, a short drive from the Cardas factory in Bandon. We can measure your runs, recommend terminations for your components, and special-order custom lengths and connector options. Call \u003ca href=\"tel:+15032222599\"\u003e(503) 222-2599\u003c\/a\u003e or email \u003ca href=\"mailto:sales@pearlaudio.com?subject=Cardas%20HPI%20Headphone%20Interconnect\"\u003esales@pearlaudio.com\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Cardas","offers":[{"title":"6 in (0.15 m)","offer_id":50786267627618,"sku":"CARD-HPI-15CM","price":20.0,"currency_code":"USD","in_stock":true},{"title":"1 ft (0.3 m)","offer_id":50786267660386,"sku":"CARD-HPI-30CM","price":28.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2475\/2780\/files\/Screenshot2025-07-17at4.18.56PM.png?v=1752794341","url":"https:\/\/pearlaudio.com\/products\/cardas-hpi-headphone-interconnect-cable","provider":"Pearl Audio","version":"1.0","type":"link"}