Description
The FiiO M21 is a portable music player for listeners wanting audiophile-grade sound without sacrificing convenience. Running Android 13 on a Snapdragon 680 with 4GB RAM and 64GB storage, it handles local libraries, streaming services, and high-resolution file playback effortlessly. A quad CS43198 DAC array delivers eight-channel fully differential output, paired with a two-stage amplifier using OPA1692 op-amps and SGM8262-2 current buffers for clean, detailed reproduction. The 4.7-inch bezel-less touchscreen has an oleophobic coating, while the CNC-machined aluminum chassis with AG frosted glass back offers a secure, premium grip.
Connectivity covers both wired and wireless: dual USB-C ports enable desktop mode (bypassing the battery for pure external power), 3.5mm and 4.4mm headphone outputs, coaxial digital out, and microSD expansion up to 2TB. Bluetooth 5.0 with LDAC, LHDC, and aptX HD transmission plus LDAC reception keeps wireless listening high-resolution. With up to 950mW per channel into 32Ω in Super High Gain desktop mode and a 4000mAh battery rated at 15 hours on 3.5mm output, the M21 drives a wide range of IEMs and headphones. Reviewers praise its clarity, detail retrieval, and versatile build — making it a compelling choice for entry-level audiophiles and experienced listeners alike.
Specifications
| SoC | Qualcomm Snapdragon 680 |
| DAC | Cirrus Logic CS43198 × 4 |
| Display | 4.7-inch (750×1334) TFT bezel-less screen |
| Battery | 4000mAh, 15h (3.5mm), 12.5h (4.4mm) |
| Output Power (BAL, Super High Gain) | ≥950mW per channel (32Ω) |
| Bluetooth TX/RX | 5.0, AAC/SBC/aptX/aptX HD/LDAC/LHDC |
| Local Decoding | Up to 384kHz/32bit; DSD256 Native |
| USB DAC | Up to 768kHz/32bit; DSD512 |
| Headphone Outputs | 3.5mm (PO/LO) + 4.4mm (BAL/LO) |
| Coaxial Output | 3.5mm, up to 384kHz/24bit; DSD128 (DOP) |
| Memory Card | microSD, up to 2TB |
| Weight / Dimensions | ~193g / 68×121×17mm |
