| Function and Configuration |
K9 AKM |
K9 |
| USB decoding chip |
XMOS XUF208 |
| Color |
Black |
| DAC |
AK4191+AK4499EX |
ES9068A*2 |
| Bluetooth |
QCC5124 reception, supports AAC/SBC/aptX/LDAC/aptX HD/aptX LL/aptX Adaptive, full codec EQ support (no LHDC) |
| Bluetooth firmware upgrade |
OTA |
Windows upgrade+OTA |
| Local firmware upgrade |
Windows upgrade |
| Line in |
√ |
| Coaxial input |
√ |
| Optical input |
√ |
| Line out |
√ |
| Amp module |
THX 788+ *2 |
| DAC filter preset |
6 kinds |
3 kinds |
| Max sampling rate support |
768k 32bit/DSD512 |
| Output power (PO) |
≥1500mW (32Ω)
≥200mW (300Ω) |
| Output power (BAL) |
≥2000mW (32Ω)
≥780mW (300Ω) |
| SNR (LO) |
SE:≥119dB (A-weighted)
BAL: ≥128dB (A-weighted) |
SE:≥119dB (A-weighted)
BAL: ≥124dB (A-weighted) |
| SNR (PO) |
SE:≥127dB (A-weighted)
BAL: ≥124dB (A-weighted) |
SE:≥124dB (A-weighted)
BAL: ≥119dB (A-weighted) |
| Noise floor (LO) |
SE:＜2.9μV (A-weighted)
BAL: ＜1.9μV (A-weighted) |
SE:＜2.9μV (A-weighted)
BAL: ＜3.1μV (A-weighted) |
| Noise floor (PO) |
SE:＜3μV (A-weighted)
BAL: ＜5.2μV (A-weighted) |
SE:＜4.8μV (A-weighted)
BAL: ＜7.1μV (A-weighted) |
| Single-chip microcomputer |
GD32 |
| Volume knob |
Analog potentiometer |
| Volume adjustment |
NJU72315 |
| USB port |
Rear panel Type-B + Side Type-C |
Rear panel Type-B |
| Indicator light |
Knob RGB light indicates sampling rate |
| Buttons |
Input switch, power supply |
| Input/Output switch |
3 levels, LO/PRE/PO |
| Gain level |
H/M/L |
| Accessory |
USB A-B cable, AC power cable, 6.35mm to 3.5mm adapter, fuse, stand, feet pads |
