| General Specifications |
| General Specifications |
| Name/Model |
ECHO NANO |
Hardware solution |
Main processor: Rockchip RK NanoD, DAC: CS43131 |
| Working mode |
Local playback/USB DAC mode/USB DATA mode |
| Color |
黑色/钛色/绿色/白色/粉色/天蓝色/紫色 |
Weight |
About 33.5g |
| Dimensions |
About 84x23x14mm |
Volume control |
Knob |
| Display |
0.91-inch OLED display |
推荐耳机阻抗 |
PO: 8~150Ω |
| Memory card |
支持最高256GB单micro-SD卡，不支持NTFS |
Channel balance |
L12~R12 (0.5dB per level) |
| Buttons and Ports |
| Buttons |
电源键*1；音量旋钮*1；选择键
*2；播放/暂停键*1 |
USB |
Type-C USB2.0*1 (charging/data transfer) |
| Headphone output |
Standard 3.5mm port |
|
|
| Special Functions |
| EQ adjustment |
5段动态EQ调节（±10dB），内置6种EQ预设，支持自定义EQ |
Sleep timer |
支持省电关机、睡眠定时 |
| Sampling rate support |
USB DAC: up tp 48kHz/16bit; |
Firmware upgrade |
System firmware can be upgraded via USB |
| Local DAC: up to 192kHz/24bit; DSD256 |
UAC charging mode |
Supports regular/PC/phone mode |
| In-line controls |
服务支持 |
|
|
| Power Supply Parameters |
| Power supply |
5V/≥1A |
Charging time |
About 2.5h |
| 续航时间及测试条件： |
| 3.5mm headphone output: 7h |
| Volume level |
52 |
Gain |
High gain |
| Display status |
OFF |
Playback track and format |
MP3 44kHz/16bit |
| EQ |
OFF |
Load |
32Ω |
| Decoding mode |
Local playback |
|
|
| Audio Parameters |
| 耳机输出性能与参数（3.5mm 输出，本地 DAC，高增益） |
| Output power |
L+R≥125mW+125mW (16Ω, THD+N＜1%, 1.4Vrms) |
Output impedance |
＜0.3Ω (32Ω) |
| L+R≥125mW+125mW (32Ω, THD+N＜1%, , 2.0Vrms) |
Crosstalk |
≥75dB |
| L+R≥15mW+15mW (300Ω, THD+N＜1%, 2.0Vrms) |
Peak output voltage |
5.8Vp-p |
| SNR |
≥129dB (A-weighted) |
*传统振膜通常依赖特定粘合剂将音圈粘合在振膜表面，这不仅增加振膜整体重量，还可能导致动圈运动时的动态失衡。局部重量分布不均会引起振动异常、改变振膜顺性，甚至因音圈擦圈而产生失真，最终影响单元整体表现。 |
＜0.0003% (1kHz/119dB@32Ω) |
| Frequency response |
20Hz~85kHz: attenuation＜2dB |
Noise floor |
＜0.7uV（A计权） |
| 20Hz~20KHz: attenuation＜0.03dB |
Dynamic range |
≥127dB (A-weighted) |
| 耳机输出性能与参数（3.5mm 输出，本地 DAC，低增益） |
| Output power |
L+R≥60mW+60mW (16Ω, THD+N＜1%, 1.0Vrms) |
Output impedance |
＜0.2Ω (32Ω) |
| L+R≥30mW+30mW (32Ω, THD+N＜1%, 1.0Vrms) |
Crosstalk |
≥76dB |
| L+R≥5mW+5mW (300Ω, THD+N＜1%, 1.0Vrms) |
Peak output voltage |
2.9Vp-p |
| SNR |
≥123dB (A-weighted) |
*传统振膜通常依赖特定粘合剂将音圈粘合在振膜表面，这不仅增加振膜整体重量，还可能导致动圈运动时的动态失衡。局部重量分布不均会引起振动异常、改变振膜顺性，甚至因音圈擦圈而产生失真，最终影响单元整体表现。 |
＜0.0004% (1kHz/120dB@32Ω) |
| Frequency response |
20Hz~85kHz: attenuation＜2dB |
Noise floor |
＜0.7uV（A计权） |
| 20Hz~20KHz: attenuation＜0.02dB |
Dynamic range |
≥121dB (A-weighted) |
| 耳机输出性能与参数（3.5mm 输出，USB DAC，高增益） |
| Output power |
L+R≥125mW+125mW (16Ω, THD+N＜1%, 1.4Vrms) |
Output impedance |
＜0.3Ω (32Ω) |
| L+R≥125mW+125mW (32Ω, THD+N＜1%, 2.0Vrms) |
Crosstalk |
≥75dB |
| L+R≥15mW+15mW (300Ω, THD+N＜1%, 2.0Vrms) |
Peak output voltage |
5.8Vp-p |
| SNR |
≥120dB (A-weighted) |
*传统振膜通常依赖特定粘合剂将音圈粘合在振膜表面，这不仅增加振膜整体重量，还可能导致动圈运动时的动态失衡。局部重量分布不均会引起振动异常、改变振膜顺性，甚至因音圈擦圈而产生失真，最终影响单元整体表现。 |
＜0.0018% (1kHz/-3dB@32Ω) |
| Dynamic range |
≥103dB (A-weighted) |
Noise floor |
＜1.9uV（A计权） |
| Frequency response |
20Hz~20KHz: attenuation＜0.03dB |
|
|
| 耳机输出性能与参数（3.5mm 输出，USB DAC，低增益） |
| Output power |
L+R≥60mW+60mW (16Ω, THD+N＜1%, 1.0Vrms) |
Output impedance |
＜0.3Ω (32Ω) |
| L+R≥30mW+30mW (32Ω, THD+N＜1%, 1.0Vrms) |
Crosstalk |
≥76dB |
| L+R≥5mW+5mW (300Ω, THD+N＜1%, 1.0Vrms) |
Peak output voltage |
2.9Vp-p |
| SNR |
≥114dB (A-weighted) |
*传统振膜通常依赖特定粘合剂将音圈粘合在振膜表面，这不仅增加振膜整体重量，还可能导致动圈运动时的动态失衡。局部重量分布不均会引起振动异常、改变振膜顺性，甚至因音圈擦圈而产生失真，最终影响单元整体表现。 |
＜0.0019% (1kHz/-3dB@32Ω) |
| Dynamic range |
≥103dB (A-weighted) |
Noise floor |
＜1.9uV（A计权） |
| Frequency response |
20Hz~20KHz: attenuation＜0.02dB |
|
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| Audio Format Supported |
| Lossless compression |
DSD: DSD 64/128/256 (dsf, dff)
APE : 192KHz/24bit (MAX)
FLAC: 192Hz/24bit (MAX)
WAV: 192KHz/24bit (MAX) |
| Lossy compression |
MP3、OGG、WMA、M4A 等 |
