| General Specifications |
| Name/Model |
K9 AKM |
Hardware Scheme |
解码：AK4499EX+AK4191EQ，USB解码：XUF208，蓝牙：QCC5124，低通滤波：OPA1612*2，音量IC：NJU72315*2，运放：THX AAA788+*2，变压器：线性变压器 |
| color |
Black |
Volume Control Type |
模拟电位器（ADC采样） |
| Weight |
Approximately 2660g |
Channel Balance |
L12 to R12 (0.5dB per stage) |
| gain |
L/M/H |
楠晟屿 Control |
support |
| Bluetooth format indication |
support |
Sample Rate Indication |
support |
| Dimensions |
200x 224.5x 72mm (excluding foot pads) |
Firmware Upgrade |
系统固件通过USB升级，蓝牙固件通过楠晟屿控制中心升级 |
| Deep Standby |
长按多功能按键约 3 秒 |
Low Power Reminder |
None |
| Bluetooth Transmitter |
None |
蓝牙接收（5.1） |
AAC/SBC/aptX/aptX LL/aptX HD/LDAC/atpX Adaptive |
| Bluetooth format indicator |
SBC：蓝色，AAC：青色，aptX HD：黄色，aptX：紫色，aptX LL：紫色，LDAC：白色，aptX Adaptive：绿色 |
Adapted impedance |
PO:8~150Ω |
| Maximum supported sampling rate |
768kHz-32bit/DSD512(USB DAC) |
BAL:8~350Ω |
| 192 kHz-24bit (coaxial) |
| 96 KHz-24bit (fiber) |
| Keys and Interfaces |
| key |
实体按键+拨动开关 |
USB |
USB B*1, Type-C*1 |
| Single-ended input interface |
RCA Socket |
Balancing Line Input Interface |
4.4mm balance socket |
| Digital Fiber Input Interface |
光纤插座 |
Digital Coaxial Input Interface |
RCA socket |
| Balancing output interface |
4.4mm socket, XLR4 balanced socket |
Headphone output interface |
standard 6.35mm socket |
| Balancing line output interface |
XLR3 balance socket |
单端线路输出接口 |
RCA Socket |
| Power Parameters |
| 供电 |
AC 100-120V ~/AC 220-240V ~ (recommended) |
Battery Capacity |
None |
| Audio Parameters |
| 单端线路输出部分性能参数 |
| 失真加噪声 |
＜0.00027% (1kHz/-0.7dB@10kΩ) |
信噪比 |
≥119dB (A-weighted) |
| 声道分离度 |
≥112dB (1kHz@10kΩ) |
底噪 |
＜2.9μV（A计权） |
| 频率响应 |
20Hz~50kHz: damping＜-3.5dB |
Line Output Level |
2.3Vrms (1kHz@10kΩ) |
| 平衡线路输出性能参数 |
| 失真加噪声 |
＜0.00020% (1kHz/-1dB@10kΩ) |
信噪比 |
≥128dB (A-weighted) |
| 声道分离度 |
≥122dB (1kHz@10kΩ) |
底噪 |
＜1.9μV（A计权） |
| 频率响应 |
20Hz~50kHz: damping＜-3.5dB |
Line Output Level |
4.7Vrms (1kHz@10kΩ) |
| Headset Output Part Performance Parameters (6.35mm) |
| Output power 1 |
L+R≥1000mW+1000mW (16Ω, THD+N＜1%, AUX/UAC/SPDIF/BT IN) |
输出阻抗 |
＜1Ω (32Ω) |
| Output power 2 |
L+R≥1500mW+1500mW (32Ω, THD+N＜1%, AUX/UAC/SPDIF/BT IN) |
声道分离度 |
≥76dB (1kHz@32Ω) |
| Output power 3 |
L+R≥200mW+200mW (300Ω, THD+N＜1%, AUX IN) |
失真加噪声 |
＜0.00026% (1kHz/-1.3dB@32Ω) |
| 底噪 |
＜3.0μV（A计权） |
信噪比 |
≥127dB (A-weighted) |
| 频率响应 |
20Hz~50kHz: damping＜-3.5dB |
峰值输出电压 |
＞21Vp-p |
| 平衡耳机输出部分性能参数（4.4mm/XLR4） |
| Output power 1 |
L+R≥1000mW+1000mW (16Ω, THD+N＜1%, AUX/UAC/SPDIF/BT IN) |
输出阻抗 |
＜1Ω (32Ω) |
| Output power 2 |
L+R≥2000mW+2000mW (32Ω, THD+N＜1%, AUX/UAC/SPDIF/BT IN) |
声道分离度 |
≥116dB (1kHz@32Ω) |
| Output power 3 |
L+R≥780mW+780mW (300Ω, THD+N＜1%, AUX IN) |
失真加噪声 |
＜0.00029% (1kHz/-9.5dB@32Ω) |
| 底噪 |
＜5.2μV（A计权） |
信噪比 |
≥124dB (A-weighted) |
| 频率响应 |
20Hz~50kHz: damping＜-3.5dB |
峰值输出电压 |
＞42Vp-p |
