| 基本规格 |
| 名称/型号 |
M21 |
硬件方案 |
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 |
| 颜色 |
Titanium gold/Dark blue/Black |
重量 |
About 193g |
| 尺寸 |
About 68x121x17mm |
音量控制 |
按鈕控制項 |
| 显示 |
4.7-inch (750x1334) bezel-less screen |
Internal storage/available capacity (ROM) |
64GB/About 52GB |
| RAM |
4GB |
自适应阻抗 |
PO: 8~350Ω |
| 记忆卡 |
Single microSD card expansion, up to 2TB in theory |
BAL: 8 ~ 350Ω |
| 声道平衡 |
L20 ~ R20 （每级0.5dB ） |
|
|
| 按键与接口 |
| 按键 |
Power button*1; Multifunction button*1; Volume button*2; Play/Pause button*1; Previous track*1; Next track*1 |
USB |
Type-C USB3.0*1 (charging/data transmission)+Type-C POWER IN*1 (charging/independent power supply port) |
| 翘板开关 |
HOLD switch*1; D.MODE switch*1 |
耳机输出 |
Standard 3.5mm |
| 线路输出 |
Standard 3.5mm (shared PO) |
BAL headphone out |
Standard 4.4mm |
| BAL line output |
Standard 4.4mm (shared BAL) |
COAX headphone out |
Standard 3.5mm (shared PO) |
| Exposed contacts |
Connect to cassette-style protective case |
|
|
| Special functions |
| WiFi |
2.4GHz/5GHz, supports DLNA, AirPlay, WiFi song transfer, etc. |
蓝牙传输(5.0) |
AAC/SBC/aptX/aptX HD/LDAC/LHDC |
| 蓝牙接收(5.0) |
SBC/AAC/LDAC |
卓宁链接 |
Android supports WiFi and Bluetooth control, iOS supports Bluetooth control |
| MQA |
支持MQA全解码 |
ALL TO DSD |
支持 |
| 均衡器调整 |
10-band dynamic EQ adjustment (±12dB), built in 8 types of preset EQ, self-define EQ |
System navigation mode |
支持手势导航、2键导航与3键导航 |
| 轻触两次即可醒来 |
支持 |
Power off timers |
Supports Sleep/Idle power off |
| 最大支持采样率 |
USB DAC: Supports up to 384kHz/32bit; DSD256 (Native) |
固件升级 |
Supports upgrade from local storage/memory card/OTA |
| Local decoding: Supports up to 384kHz/32bit; DSD256 (Native) |
|
|
| USB音频： 768kHz/32bit ； DSD512 （支持DoP/D2P/Native ） |
|
|
| Coaxial output: Supports up to 384kHz/24bit; DSD128 (DOP) |
|
|
| 电源参数 |
| 电源 |
Supports D2.0 and PD3.0 fast charging |
充电时间 |
About 1.5h (PD3.0 fast charging mode) |
| Battery life and test conditions: |
| 3.5mm headphone out: 15 hours |
| 音量级别 |
44 |
增益等级 |
高增益 |
| 显示状态 |
关 |
播放曲目和格式 |
MP3 44kHz/16bit |
| EQ |
关 |
负载 |
32Ω |
| 4.4mm headphone out: 12.5 hours |
| 音量级别 |
33 |
增益等级 |
高增益 |
| 显示状态 |
关 |
播放曲目和格式 |
MP3 44kHz/16bit |
| EQ |
关 |
负载 |
32Ω |
| 音频参数 |
| Parts of performance and parameters of PO (3.5mm, USB DAC, Super High Gain mode) |
| 输出功率 |
L+R≥480mW+480mW (16Ω, THD+N＜1%) |
输出阻抗 |
＜ 1Ω |
| L+R≥405mW+405mW (32Ω, THD+N＜1%) |
串扰 |
≥74dB |
| L+R≥45mW+45mW (300Ω, THD+N＜1%) |
峰值输出电压 |
10.6Vp-p |
| SNR |
≥ 124dB （ A加权） |
THD+N |
＜0.0003% (1kHz/-4dB@32Ω) |
| 频率响应 |
20Hz ~ 85kHz ：衰减＜ 2dB |
本底噪声 |
＜2uV (A-weighted) |
| 20Hz ~ 20KHz ：衰减＜ 0.02 dB |
动态范围 |
≥ 124dB （ A加权） |
| Parts of performance and parameters of PO (3.5mm, USB DAC, High Gain mode) |
| 输出功率 |
L+R≥380mW+380mW (16Ω, THD+N＜1%) |
输出阻抗 |
＜ 1Ω |
| L+R≥290mW+290mW (32Ω, THD+N＜1%) |
串扰 |
≥74dB |
| L+R≥35mW+35mW (300Ω, THD+N＜1%) |
峰值输出电压 |
9.5Vp-p |
| SNR |
≥ 123dB （ A加权） |
THD+N |
＜0.0004% (1kHz/-4dB@32Ω) |
| 频率响应 |
20Hz ~ 85kHz ：衰减＜ 2dB |
本底噪声 |
＜ 2.1uV （ A加权） |
| 20Hz ~ 20KHz ：衰减＜ 0.02 dB |
动态范围 |
≥ 123dB （ A加权） |
| Parts of performance and parameters of LO |
| THD+N |
＜0.0005% (1kHz/-5dB@10KΩ) |
SNR |
≥ 122dB （ A加权） |
| 串扰 |
≥111dB |
本底噪声 |
＜1.6uV (A-weighted) |
| 频率响应 |
20Hz~85kHz: attenuation＜1.8dB |
线路输出电平 |
1.9Vrms |
| 20Hz ~ 20KHz ：衰减＜ 0.02 dB |
动态范围 |
≥ 122dB （ A加权） |
| Parts of performance and parameters of BAL headphone out (4.4mm, USB DAC, Super High Gain mode) |
| 输出功率 |
L+R≥540mW+540mW (16Ω, THD+N＜1%) |
输出阻抗 |
＜ 1.5Ω |
| L+R≥950mW+950mW (32Ω, THD+N＜1%) |
串扰 |
≥109dB |
| L+R≥185mW+185mW (300Ω, THD+N＜1%) |
峰值输出电压 |
21.2Vp-p |
| SNR |
≥ 126dB （ A加权） |
THD+N |
＜0.0005% (1kHz/-12dB@32Ω) |
| 频率响应 |
20Hz ~ 85kHz ：衰减＜ 2dB |
本底噪声 |
＜2.7uV (A-weighted) |
| 20Hz ~ 20KHz ：衰减＜ 0.03 dB |
动态范围 |
≥ 125dB （ A加权） |
| Parts of performance and parameters of BAL headphone out (4.4mm, USB DAC, High Gain mode) |
| 输出功率 |
L+R≥600mW+600mW (16Ω, THD+N＜1%) |
输出阻抗 |
＜ 1.5Ω |
| L+R≥720mW+720mW (32Ω, THD+N＜1%) |
串扰 |
≥109dB |
| L+R≥90mW+90mW (300Ω, THD+N＜1%) |
峰值输出电压 |
15Vp-p |
| SNR |
≥ 125dB （ A加权） |
THD+N |
＜0.0005% (1kHz/-8dB@32Ω) |
| 频率响应 |
20Hz ~ 85kHz ：衰减＜ 2dB |
本底噪声 |
＜2.7uV (A-weighted) |
| 20Hz ~ 20KHz ：衰减＜ 0.03 dB |
动态范围 |
≥ 124dB （ A加权） |
| Parts of performance and parameters of BAL LO |
| THD+N |
＜0.0003% (1kHz/-0dB@10KΩ) |
SNR |
≥ 126dB （ A加权） |
| 串扰 |
≥103dB |
本底噪声 |
＜1.9uV (A-weighted) |
| 频率响应 |
20Hz~85kHz: attenuation＜1.8dB |
线路输出电平 |
3.9Vrms |
| 20Hz ~ 20KHz ：衰减＜ 0.02 dB |
动态范围 |
≥ 125dB （ A加权） |
