{"product_id":"used-open-box-fiio-jm21-dap","title":"Used \/ Open-Box FiiO JM21 DAP","description":"\u003csection\u003e\n\u003ch2\u003eProduct overview\u003c\/h2\u003e\n\u003cp\u003eThe FiiO JM21 is a DAP for portable headphone listening and dedicated music playback. HiFiLoop uses this page as a focused model page for used \/ open-box private-quote requests.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eKey features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePortable high-resolution Android music player for streaming apps, local files, and compact headphone systems.\u003c\/li\u003e\n\u003cli\u003eQualcomm Snapdragon 680 platform and Android 13 support modern portable-player operation.\u003c\/li\u003e\n\u003cli\u003eDual CS43198 DAC chips and dual SGM8262 op-amps support balanced portable output.\u003c\/li\u003e\n\u003cli\u003eAndroid, Pure Music, USB DAC, and Bluetooth receiving modes support multiple playback workflows.\u003c\/li\u003e\n\u003cli\u003e3.5mm single-ended and 4.4mm balanced outputs also support line output functions.\u003c\/li\u003e\n\u003cli\u003eWiFi, AirPlay, DLNA, USB Audio, local decoding, and microSD expansion support flexible music libraries.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct type\u003c\/th\u003e\n\u003ctd\u003eAndroid digital audio player\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMain controller\u003c\/th\u003e\n\u003ctd\u003eQualcomm Snapdragon 680\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDAC \/ amplifier\u003c\/th\u003e\n\u003ctd\u003eCS43198 x2 DAC; SGM8262 x2 op-amp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating modes\u003c\/th\u003e\n\u003ctd\u003eAndroid, Pure Music, USB DAC, Bluetooth receiving\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDisplay\u003c\/th\u003e\n\u003ctd\u003e4.7-inch 750 x 1334 display\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMemory \/ storage\u003c\/th\u003e\n\u003ctd\u003e3GB \/ 4GB RAM versions; 32GB \/ 64GB ROM versions; microSD expansion up to 2TB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutputs\u003c\/th\u003e\n\u003ctd\u003e3.5mm headphone \/ line \/ coaxial output; 4.4mm balanced headphone \/ line output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWireless\u003c\/th\u003e\n\u003ctd\u003e2.4GHz \/ 5GHz WiFi; Bluetooth 5.0 transmission and reception\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSupported formats\u003c\/th\u003e\n\u003ctd\u003eLocal and USB DAC playback up to 384kHz \/ 32-bit and DSD256 Native; USB Audio up to 768kHz \/ 32-bit and DSD512\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBalanced output power\u003c\/th\u003e\n\u003ctd\u003eUp to L+R \u0026gt;= 700mW + 700mW at 32 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eSeries \/ category notes\u003c\/h2\u003e\n\u003cp\u003eThe JM21 sits in the FiiO \/ Jade Audio JM Series and fits the Portable media players category, making it relevant for buyers comparing DAP options in similar listening setups.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eCondition \u0026amp; availability\u003c\/h2\u003e\n\u003cp\u003eReference page only. Manual availability check required.\u003c\/p\u003e\n\u003cp\u003eThis is a used \/ open-box reference listing.\u003c\/p\u003e\n\u003cp\u003eFinal pricing, condition, accessories, and availability are confirmed case by case.\u003c\/p\u003e\n\u003cp\u003eReference price is for price context only. Availability and final quote are confirmed manually before payment. New or like-new options can be checked on request.\u003c\/p\u003e\n\u003cp\u003eFor this DAP unit, HiFiLoop checks functional status, cosmetic condition, included accessories, version details, photos, and known limitations before quoting. Where relevant, battery behavior, charging, controls, ports, and connectivity are reviewed for the specific unit being offered.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eShipping \u0026amp; support\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e3–5 business days processing after confirmation\u003c\/li\u003e\n\u003cli\u003e7–15 days typical international shipping\u003c\/li\u003e\n\u003cli\u003eFree shipping over $199\u003c\/li\u003e\n\u003cli\u003e14-day DOA support\u003c\/li\u003e\n\u003cli\u003eRepair path from day 15 to day 180\u003c\/li\u003e\n\u003cli\u003eBuyer may be responsible for return shipping, taxes, and duties\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003ch3\u003eWhat does Reference price mean?\u003c\/h3\u003e\n\u003cp\u003eReference price is for price context only. It is a planning guide, not a final selling price. Final terms are confirmed with the exact unit.\u003c\/p\u003e\n\u003ch3\u003eIs this exact unit ready to ship?\u003c\/h3\u003e\n\u003cp\u003eManual availability check required. This page identifies the model, not a guaranteed ready-to-ship unit. Timing is confirmed during the quote process.\u003c\/p\u003e\n\u003ch3\u003eCan HiFiLoop help me find another unit?\u003c\/h3\u003e\n\u003cp\u003eYes. New or like-new options can be checked on request. Share your preferred condition, accessories, budget range, and region so HiFiLoop can look for another suitable used \/ open-box option.\u003c\/p\u003e\n\u003c\/section\u003e","brand":"FiiO","offers":[{"title":"Default Title","offer_id":48313388761302,"sku":null,"price":129.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0790\/7445\/9862\/files\/SKU__1_10d3bf42-a139-4e86-ad34-65663eafa420.jpg?v=1780372587","url":"https:\/\/www.hifiloop.com\/products\/used-open-box-fiio-jm21-dap","provider":"HiFiLoop","version":"1.0","type":"link"}