| 名称／型号 | M21 |
| 硬件方案 | SoC: Qualcomm Snapdragon 680, DAC: CS43198*4, Amp: OPA1692*2+SGM8262-2*2查看官网原文Hardware solution：SoC: Qualcomm Snapdragon 680, DAC: CS43198*4, Amp: OPA1692*2+SGM8262-2*2 |
| 工作模式 | Android/Pure music/AirPlay/USB DAC/Bluetooth Receiving查看官网原文Working mode：Android/Pure music/AirPlay/USB DAC/Bluetooth Receiving |
| 颜色 | Titanium gold/Dark blue/黑色查看官网原文Color：Titanium gold/Dark blue/Black |
| 重量 | 约 193g |
| 尺寸 | 约 68x121x17mm |
| 音量调节方式 | Button control查看官网原文Volume control type：Button control |
| 显示屏 | 4.7-inch (750x1334) bezel-less screen查看官网原文Display：4.7-inch (750x1334) bezel-less screen |
| 存储空间／可用容量 | 64GB/约 52GB |
| 声道平衡 | L20~R20 (0.5dB per level)查看官网原文Channel balance：L20~R20 (0.5dB per level) |
| 按键 | Power button*1; Multifunction button*1; Volume button*2; Play/Pause button*1; Previous track*1; Next track*1查看官网原文Buttons：Power button*1; Multifunction button*1; Volume button*2; Play/Pause button*1; Previous track*1; Next track*1 |
| USB 接口 | Type-C USB3.0*1 (charging/data transmission)+Type-C POWER IN*1 (charging/independent power supply port)查看官网原文USB：Type-C USB3.0*1 (charging/data transmission)+Type-C POWER IN*1 (charging/independent power supply port) |
| 拨动开关 | HOLD switch*1; D.MODE switch*1查看官网原文Toggle switch：HOLD switch*1; D.MODE switch*1 |
| 耳机输出 | Standard 3.5mm查看官网原文Headphone out：Standard 3.5mm |
| 线路输出 | Standard 3.5mm (shared PO)查看官网原文Line output：Standard 3.5mm (shared PO) |
| 平衡耳机输出 | Standard 4.4mm查看官网原文BAL headphone out：Standard 4.4mm |
| 平衡线路输出 | Standard 4.4mm (shared BAL)查看官网原文BAL line output：Standard 4.4mm (shared BAL) |
| COAX headphone out | Standard 3.5mm (shared PO)查看官网原文COAX headphone out：Standard 3.5mm (shared PO) |
| 外露触点 | Connect to cassette-style protective case查看官网原文Exposed contacts：Connect to cassette-style protective case |
| Wi-Fi 无线网络 | 2.4GHz/5GHz, supports DLNA, AirPlay, WiFi song transfer, etc.查看官网原文WiFi：2.4GHz/5GHz, supports DLNA, AirPlay, WiFi song transfer, etc. |
| 蓝牙发射 (5.0) | AAC/SBC/aptX/aptX HD/LDAC/LHDC查看官网原文Bluetooth transmission (5.0)：AAC/SBC/aptX/aptX HD/LDAC/LHDC |
| 蓝牙接收 (5.0) | SBC/AAC/LDAC |
| FiiO Link 功能 | Android supports WiFi and Bluetooth control, iOS supports Bluetooth control查看官网原文FIIO Link：Android supports WiFi and Bluetooth control, iOS supports Bluetooth control |
| MQA 支持 | Supports MQA full decoding查看官网原文MQA：Supports MQA full decoding |
| 全局转 DSD | Supported查看官网原文ALL TO DSD：Supported |
| 均衡器调节 | 10-band dynamic EQ adjustment (±12dB), built in 8 types of preset EQ, self-define EQ查看官网原文EQ adjustment：10-band dynamic EQ adjustment (±12dB), built in 8 types of preset EQ, self-define EQ |
| 系统导航方式 | Supports gesture navigation, 2-button navigation and 3-button navigation查看官网原文System navigation mode：Supports gesture navigation, 2-button navigation and 3-button navigation |
| 双击唤醒 | Supported查看官网原文Double tap to wake up：Supported |
| 定时关机 | Supports Sleep/Idle power off查看官网原文Power off timers：Supports Sleep/Idle power off |
| 供电方式 | Supports D2.0 and PD3.0 fast charging查看官网原文Power supply：Supports D2.0 and PD3.0 fast charging |
