{"product_id":"fiio-jm21-digital-audio-player-with-4-64gb-memory","title":"FiiO JM21 Digital Audio Player with 4+64GB Memory","description":"\u003cp\u003eThe FiiO JM21 puts flagship-level audio chips into an entry-level Android music player, and this is the version with 4GB of RAM, 64GB of storage and a bigger battery for up to 16 hours of listening. Two Cirrus Logic CS43198 DACs in a fully balanced design deliver up to 700mW per channel from the 4.4mm output, a 6nm Snapdragon 680 runs a smooth Android 13 for your streaming apps, and FiiO’s DAPS system keeps every app bit-perfect. It is just 13mm thin and 156g, and won both a Gold Award and a Planning Award at VGP 2025 Summer in Japan.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/fiio-jm21-digital-audio-player-with-4-64gb-memory-photo-colours.jpg?v=1791330483\" alt=\"FiiO JM21 music player in sky blue\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3\u003eA 6nm Snapdragon 680\u003c\/h3\u003e\n\u003cp\u003eInside is a Qualcomm Snapdragon 680 with eight Kryo 265 cores running at up to 2.4GHz, made on a 6nm process, for a big step up in performance with noticeably lower power use and a silky-smooth experience.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/fiio-jm21-digital-audio-player-with-4-64gb-memory-photo-soc.jpg?v=1791330488\" alt=\"The Snapdragon 680 processor of the FiiO JM21\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3\u003eDual CS43198 DACs in a fully balanced design\u003c\/h3\u003e\n\u003cp\u003eTwo flagship Cirrus Logic CS43198 DACs work with two high-performance SGM8262 op-amps in a fully balanced audio design. Building on lessons from many earlier players, FiiO further optimised the segmented power supply and the front and rear gain stages for wider dynamic range and richer musicality: up to 129dB signal-to-noise from the balanced output, with distortion as low as 0.0006%.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/fiio-jm21-digital-audio-player-with-4-64gb-memory-photo-dacs.jpg?v=1791330494\" alt=\"The two Cirrus Logic CS43198 DACs of the FiiO JM21\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe digital and analogue sections have independent power supplies. A three-stage segmented supply gives the DAC, voltage amplification and current amplification stages their own power, and each op-amp in the four-channel amplifier has four independent precision LDO regulators. The main control, DAC and amplifier sections each sit in their own shielded zone, reducing crosstalk and outside interference for purer sound.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/fiio-jm21-digital-audio-player-with-4-64gb-memory-photo-blocks.jpg?v=1791330499\" alt=\"The FiiO JM21 signal path: FPGA, two CS43198 DACs and SGM8262 amplifiers\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3\u003eDAPS: no resampling, from any app\u003c\/h3\u003e\n\u003cp\u003eAndroid normally resamples audio. FiiO’s DAPS (Digital Audio Purification System) uses a fifth-generation FPGA with two custom femtosecond crystal oscillators, 10ppm low-drift parts with ceramic gold-plated bases and ultra-low phase noise, each screened by FiiO, to give one precise, low-jitter clock source. Whether you play local music in FiiO Music, stream from Apple Music or another app, or send audio to an external USB DAC, the original sample rate is left untouched.\u003c\/p\u003e\n\u003ch3\u003eThree gain levels, three volume curves\u003c\/h3\u003e\n\u003cp\u003eLow, medium and high gain each have their own volume curve, so the JM21 suits everything from sensitive earphones to full-size headphones. The 4.4mm balanced output gives 700mW per channel into 32Ω and the 3.5mm output 245mW.\u003c\/p\u003e\n\u003ch3\u003eSmooth, customised Android 13\u003c\/h3\u003e\n\u003cp\u003eFiiO’s deeply customised Android 13 is intuitive and smooth, and lets you install the major streaming apps. Because Android 13 uses a lot of memory, FiiO recommends focusing on music apps and not running many apps at once, for the best sound and performance. Five modes cover different uses: Android, Pure Music, Bluetooth receiver, USB DAC and AirPlay.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/fiio-jm21-digital-audio-player-with-4-64gb-memory-photo-apps.jpg?v=1791330503\" alt=\"Streaming apps on the FiiO JM21\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3\u003eThin, light and up to 16 hours\u003c\/h3\u003e\n\u003cp\u003eThe JM21 is just 13mm thin and 156g, easy to hold in one hand, with an aluminium alloy frame and a 4.7-inch HD screen. This 4GB + 64GB version has a 3,100mAh battery for about 16 hours from the 3.5mm output or 12.5 hours balanced (the standard 3GB + 32GB model gives about 12.5 and 9.5 hours). It charges in about 2.5 hours from a 5V 2A charger; it doesn’t support fast charging.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/fiio-jm21-digital-audio-player-with-4-64gb-memory-photo-battery.jpg?v=1791330509\" alt=\"FiiO JM21 with up to 16 hours of battery\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3\u003eTwo-way Bluetooth with LDAC\u003c\/h3\u003e\n\u003cp\u003eTwo-way Bluetooth 5.0 lets the JM21 send to wireless headphones in LDAC, LHDC, aptX HD, aptX, AAC or SBC, or receive from your phone in LDAC, AAC or SBC, so it can be a hi-fi Bluetooth receiver too. With FiiO Link you can control the JM21’s FiiO Music app from your phone: over Wi-Fi or Bluetooth from Android, and over Wi-Fi from an iPhone.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/fiio-jm21-digital-audio-player-with-4-64gb-memory-photo-bluetooth.jpg?v=1791330515\" alt=\"FiiO JM21 next to a phone\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3\u003eUSB DAC, USB audio, coaxial and line out\u003c\/h3\u003e\n\u003cp\u003eConnected to a Mac or Windows computer, the JM21 becomes an asynchronous USB DAC at up to 384kHz\/32-bit (FiiO notes slightly higher latency, so it isn’t ideal for video). In the other direction, USB audio output sends up to 768kHz\/32-bit and DSD512 to an external DAC through an OTG cable, and the 3.5mm socket doubles as a coaxial output (384kHz\/24-bit, DSD128). Both headphone sockets switch to line out for active speakers or an amplifier, and Wi-Fi supports DLNA and AirPlay.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/fiio-jm21-digital-audio-player-with-4-64gb-memory-photo-usbdac.jpg?v=1791330520\" alt=\"FiiO JM21 connected to a laptop and headphones\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/fiio-jm21-digital-audio-player-with-4-64gb-memory-photo-speaker.jpg?v=1791330523\" alt=\"FiiO JM21 with an active speaker\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3\u003eLights that tell you what’s playing\u003c\/h3\u003e\n\u003cp\u003eThe indicator light shows the format at a glance. In local playback it glows blue for lossy files, cyan for CD quality, yellow for hi-res and green for DSD; over Bluetooth it shows green for LDAC, yellow for LHDC, purple for aptX and aptX HD, cyan for AAC and blue for SBC. You can set its brightness or turn it off.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/fiio-jm21-digital-audio-player-with-4-64gb-memory-photo-parts.jpg?v=1791330527\" alt=\"Buttons and connections of the FiiO JM21\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePlatform\u003c\/th\u003e\n\u003ctd\u003eSnapdragon 680 (6nm, 8 cores, 2.4GHz) · Android 13 · 4GB RAM · 64GB (about 52GB free) · microSD up to 2TB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAudio\u003c\/th\u003e\n\u003ctd\u003e2 × CS43198 · 2 × SGM8262 · FPGA with 2 femtosecond oscillators (DAPS) · PCM 384kHz\/32-bit, DSD256\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutputs\u003c\/th\u003e\n\u003ctd\u003e4.4mm balanced: 700mW\/ch @ 32Ω · 3.5mm: 245mW\/ch @ 32Ω · line out on both · coaxial via 3.5mm · USB audio 768kHz\/DSD512\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePerformance\u003c\/th\u003e\n\u003ctd\u003eSNR ≥129dB (4.4mm) \/ ≥124dB (3.5mm) · THD+N \u0026lt;0.0006% (4.4mm) · 3 gain levels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWireless\u003c\/th\u003e\n\u003ctd\u003eBluetooth 5.0 two-way (LDAC) · Wi-Fi 2.4\/5GHz · DLNA · AirPlay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBattery\u003c\/th\u003e\n\u003ctd\u003e3,100mAh · about 16h (3.5mm) \/ 12.5h (4.4mm) · about 2.5h to charge, 5V 2A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eScreen, size and weight\u003c\/th\u003e\n\u003ctd\u003e4.7-inch 750 × 1334 · 120.7 × 68 × 13mm · about 156g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eColours\u003c\/th\u003e\n\u003ctd\u003eBlack or sky blue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/fiio-jm21-digital-audio-player-with-4-64gb-memory-photo-box.jpg?v=1791330532\" alt=\"FiiO JM21 box contents\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3\u003eGood to know\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThis is the 4GB RAM, 64GB, 16-hour version of the JM21.\u003c\/li\u003e\n\u003cli\u003eCases: the \u003ca href=\"\/products\/fiio-nest-pod-protective-case-for-the-jm21\"\u003eFiiO NEST POD\u003c\/a\u003e and the \u003ca href=\"\/products\/leatherette-case-for-the-fiio-jm21\"\u003eleatherette case for the JM21\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eFor more power and FiiO’s desktop mode, see the \u003ca href=\"\/products\/fiio-m21-digital-audio-player\"\u003eFiiO M21\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eIn the box: JM21, screen protector (fitted), transparent case, USB-A to USB-C cable, quick start guide and warranty card.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FiiO","offers":[{"title":"BLACK","offer_id":57551122628995,"sku":"FIIOJM21-64-BLACK","price":199.99,"currency_code":"GBP","in_stock":true},{"title":"SKY BLUE","offer_id":57551122661763,"sku":"FIIOJM21-64-BLUE","price":199.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/img_proxy_efad6417-397b-4681-8f72-6c7129212adf.jpg?v=1773119029","url":"https:\/\/www.advancedmp3players.co.uk\/products\/fiio-jm21-digital-audio-player-with-4-64gb-memory","provider":"amp3","version":"1.0","type":"link"}