FiiO JM21, portable Hi-Res music player

INFORMACIJA

FiiO JM21 - a compact Hi-Res portable music player (DAP) designed for high-quality audio enthusiasts. It features a Qualcomm Snapdragon 680 processor, dual Cirrus Logic CS43198 DACs, a fully balanced audio circuit, and the Android 13 operating system. With support for high-resolution audio formats, Bluetooth LDAC, Wi-Fi streaming, USB DAC functionality, and both 3.5 mm and 4.4 mm headphone outputs, the JM21 ensures excellent sound quality both at home and on the go.

Processor: Qualcomm Snapdragon 680 (8-core, 6 nm)
DAC: 2 × Cirrus Logic CS43198 with a fully balanced audio circuit
Output Power: up to 700 mW + 700 mW (4.4 mm balanced output, 32 Ω)
Display: 4.7" HD (750 × 1334) touchscreen
Hi-Res Support: up to 384 kHz / 32-bit and DSD256 (native playback / USB DAC)

DESCRIPTION

Portable High-Res Lossless Music Player
New octa-core 6nm Snapdragon 680 | Fully balanced audio design | 13mm ultra-thin body

Dual Cirrus Logic CS43198 DACs | Dual SGM8262 op-amps | Dual custom femtosecond crystal oscillators | Android 13 | Up to 700mW + 700mW output power | 4.7-inch HD display | Up to 16-hour battery life | Proprietary DAPS system without global SRC | 3.5mm + 4.4mm outputs | SPDIF / USB / Line Out audio outputs

Powerful Performance with Snapdragon 680

The FiiO JM21 is powered by the Qualcomm Snapdragon 680 octa-core processor, manufactured using an advanced 6nm process. With clock speeds up to 2.4GHz, it delivers smooth performance, lower power consumption, and a responsive Android 13 experience for music playback and streaming applications.

Dual Flagship DAC Architecture

Two Cirrus Logic CS43198 DAC chips independently process the left and right audio channels in a fully balanced design. Combined with dual SGM8262 operational amplifiers, segmented power supplies, and isolated circuit architecture, the JM21 delivers a wider dynamic range, lower distortion, and highly detailed sound reproduction.

Precision Clocking for Pure Audio

The JM21 utilizes dual custom femtosecond crystal oscillators together with a 5th-generation FPGA to ensure highly accurate clock synchronization. This minimizes jitter and guarantees bit-perfect playback with no unwanted sample-rate conversion when playing local files or streaming music.

Android 13 with Pure Audio Architecture

Running a deeply customized Android 13 operating system, the JM21 supports popular streaming music services while maintaining lossless audio quality through FiiO's proprietary DAPS (Digital Audio Purification System), which bypasses Android's global SRC.

Powerful Balanced Output

Despite its ultra-thin 13 mm chassis, the JM21 delivers up to 700mW + 700mW through its balanced 4.4 mm output, making it suitable for both in-ear monitors and demanding over-ear headphones. Three gain settings and three dedicated volume curves ensure optimal matching with different headphones.

High-Resolution Wireless Connectivity

The JM21 supports Bluetooth 5.0 with high-quality codecs including LDAC, LHDC, aptX HD, aptX, AAC, and SBC for wireless transmission, while also supporting Bluetooth reception with SBC, AAC, and LDAC.

Versatile Connectivity

The player features multiple analog and digital outputs, including:

3.5 mm headphone / Line Out / Coaxial output
4.4 mm balanced headphone / Line Out
USB DAC mode
USB Audio output
SPDIF digital output

It can also function as a USB DAC supporting up to 384kHz / 32-bit audio.

Long Battery Life

With optimized power management, the JM21 offers extended playback time:

Up to 16 hours (4GB + 64GB model, single-ended output)
Up to 12.5 hours (balanced output)
Fast charging via USB-C.
Slim Design

Designed for true portability, the JM21 features:

Only 13 mm thick
Weighs approximately 156 g
Premium aluminum alloy construction
Available in Sky Blue and Black

FiiO JM21 Music Player
Pre-installed PET screen protector
Transparent protective case
USB cable
Quick Start Guide
Warranty card

TECHNICAL SPECIFICATIONS

Model    FiiO JM21
Hardware    Qualcomm Snapdragon 680 (Main Controller), Dual Cirrus Logic CS43198 DAC, Dual SGM8262 Op-Amps
Operating Modes    Android Mode, Pure Music Mode, USB DAC Mode, Bluetooth Receiver Mode
Colors    Sky Blue, Black
Weight    Approx. 156 g
Dimensions    120.7 × 68 × 13 mm
Display    4.7-inch HD (750 × 1334) bezel-less display
RAM    3 GB / 4 GB
Storage    32 GB (22 GB usable) / 64 GB (52 GB usable)
Storage Expansion    microSD card slot, supports up to 2 TB
Volume Control    Physical buttons
Recommended Headphone Impedance (3.5 mm)    8–150 Ω
Recommended Headphone Impedance (4.4 mm)    8–350 Ω
Buttons & Ports
Feature    Details
Buttons    Power, Volume (+/-), Play/Pause, Previous Track, Next Track
USB    USB Type-C 2.0 (Charging / Data Transfer)
Headphone Output    3.5 mm Single-Ended
Balanced Output    4.4 mm Balanced
Line Output    Shared 3.5 mm / 4.4 mm
Coaxial Output    Shared 3.5 mm Port
Wireless & Connectivity
Feature    Details
Wi-Fi    Dual-band 2.4 GHz / 5 GHz
Wireless Features    DLNA, AirPlay, Wi-Fi Music Transfer
Bluetooth Version    5.0
Bluetooth Transmission    SBC, AAC, aptX, aptX HD, LDAC, LHDC
Bluetooth Reception    SBC, AAC, LDAC
FiiO Link    Android (Wi-Fi & Bluetooth), iOS (Bluetooth)
Firmware Upgrade    OTA, Local Storage, microSD Card
Audio Support
Feature    Details
USB DAC    Up to 384 kHz / 32-bit, Native DSD256
Local Playback    Up to 384 kHz / 32-bit, Native DSD256
USB Audio    Up to 768 kHz / 32-bit, Native DSD512
Coaxial Output    Up to 384 kHz / 24-bit, DSD128 (DoP/D2P)
Power Supply
Specification    Details
Power Input    5 V / ≥2 A
Charging Time (3 GB / 32 GB)    Approx. 2 hours
Charging Time (4 GB / 64 GB)    Approx. 2.5 hours
Battery Life
Output    3 GB / 32 GB    4 GB / 64 GB
3.5 mm Single-Ended    Up to 12.5 hours    Up to 16 hours
4.4 mm Balanced    Up to 9.5 hours    Up to 12.5 hours
Audio Performance – 3.5 mm Output (USB DAC, High Gain)
Parameter    Specification
Output Power @16 Ω    ≥360 mW + 360 mW
Output Power @32 Ω    ≥245 mW + 245 mW
Output Power @300 Ω    ≥30 mW + 30 mW
Signal-to-Noise Ratio    ≥124 dB (A-weighted)
THD+N    <0.0012%
Output Impedance    <1 Ω
Crosstalk    ≥70 dB
Peak Output Voltage    7.9 Vp-p
Noise Floor    <1.6 µV (A-weighted)
Frequency Response    20 Hz–20 kHz: <0.02 dB attenuation; 20 Hz–80 kHz: <0.7 dB attenuation
Audio Performance – 4.4 mm Balanced Output (USB DAC, High Gain)
Parameter    Specification
Output Power @16 Ω    ≥605 mW + 605 mW
Output Power @32 Ω    ≥700 mW + 700 mW
Output Impedance    <1.5 Ω
Crosstalk    ≥110 dB