FiiO M21 Hi-Res Music Player

The FiiO M21 Hi-Res Music Player combines a Snapdragon 680 SoC with Android 13 for smooth and responsive performance. Its 4.7-inch display offers clear, vibrant visuals, enhancing user interaction. Equipped with four CS43198 DACs, it delivers precise, high-fidelity audio for an immersive listening experience. Designed for audiophiles seeking portability and professional-grade sound quality in one compact device.

Basic specifications
Color: Titanium gold, dark blue
Color: About 68mmx121mmx17mm
Weight: About 193g
Hardware configuration
SoC: Snapdragon 680
OS: Android13
DAC: CS43198*4
Display: 4.7 inch (750x1334)fully laminated screen
Battery capacity: 4000mAh
Charging: Supports PD2.0 and PD3.0 PPS fast charging
Battery life: 15h single-ended, 12.5h balanced
RAM: 4GB
Internal storage/available capacity: 64GB/about 52GB
Storage expansion: microSD card, supports 2TB
Headphone outputs: Single-ended 3.5mm PO/LO/SPDIF+
Balanced 4.4mm PO/LO
USB interfaces: Type-C USB3.0*1 (charging/data transmission)+
Type-C POWER IN*1 (charging/independent power supply)
Bluetooth specifications
Bluetooth version: 5.0
Bluetooth transmission: AAC/SBC/aptX/aptXHD/LDAC/LHDC
Bluetooth reception: SBC/AAC/LDAC

Headphone output
Output power 1: L+R950mW+950mW
(320/THD+N <1%/balanced/Over-ear headphone mode)
Output power 2: L+R≥185mW+185mW
(300D/THD+N<1%/balanced/Over-ear headphone mode)
Output power 3: L+R405mW+405mW
(32/THD-N<1%/single-ended/Over-ear headphone mode)
Output power 4: L+R45mW+45mW
(300Q/THD+N<1%/single-ended/Over-ear headphone mode)
Output power 5: L+R720mW+720mW
(32Q/THD+N<19/balanced/high gain)
Output power 6: L+R290mW+290mW
(320/THD+N<19/single-ended/high gain)

Audio parameters
Signal-to-noise ratio: 126dB (A-weighted)
Noise floor: <1.6uV (A-weighted)
Output impedance <10
THD+N: <0.0003%(1kHz/-4dB@320)