| General Specifications |
| Name/Model |
K17 |
Hardware solution |
SoC: X2000; MCU: ESP32-S3; DAC: AK4191EX+AK4499EQ*2; USB decoding: XU316; Bluetooth decoding: QCC5125; AMP: MJE243G/253G discrete transistor current amplification headphone amplifier |
| Working mode |
USB DAC mode/Coaxial decoding mode/Optical decoding mode/Line in mode/Balanced in mode/Bluetooth receiving mode/Streaming media receiving mode/Local playback mode |
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| Colors |
Black/Silver |
Weight |
About 2750g |
| Dimensions |
About 244.6x213x66.8mm |
Volume control |
Knob/Touch-on-display/Remote control |
| MQA |
Supports MQA full decoding |
Driver-free mode (Switch mode) |
Supported |
| Gain |
Ultra high gain mode/Super high gain mode/High gain/Medium gain/Low gain |
Bluetooth receiving (5.1) |
SBC/AAC/aptX/aptX LL/aptX HD/atpX Adaptive/LDAC |
| Display |
3.93-inch LCD (240*1020) bezel-less screen |
Touch-on-display |
Supported |
| PEQ |
Supports global 31-band PEQ (No PEQ processing in digital output) |
FIIO Control |
Supports settings through the app |
| WiFi |
Supports 2.4G/5G dual-band WiFi |
Firmware upgrade |
SOC firmware: Upgrade through the rear USB-A port
MCU firmware: Upgrade through the rear RS232 port
XMOS firmware: Upgrade through the front or rear USB-C port |
| Remote control |
Supports IR remote control (only the one included in the accessory) |
Knob indicator light |
Supports customizing color, brightness, supports always-on indication or RGB pulsing |
| Max. supported sampling rate |
USB decoding: Up to 768kHz/32bit; DSD512 (Native) |
Screen status indication |
Working mode, output mode |
| Coaxial input decoding: Up to192kHz/24bit; DSD64 |
Track format, sampling rate |
| Optical input decoding: Up to96kHz/24bit |
EQ, volume |
| Coaxial output: Up to192kHz/24bit; DSD64 |
Network status, Bluetooth codec |
| Optical output: Up to192kHz/24bit |
Gain, time |
| Streaming decoding: Up to384kHz/32bit; DSD256 (DOP) |
Adaptive impedance |
PO: 8~150Ω |
| Local playback: Up to384kHz/32bit; DSD256 |
BAL: 8~350Ω |
| Buttons and Ports |
| Knob |
Power on/off knob*1+Analog output level knob*1+Gain level knob*1+Volume knob with button*1+Menu knob with button*1 |
USB port |
Type-C USB*3 (Data transmission port*2+RS232 DSP regulating port*1)
USB-A*1 (Data transmission port) |
| Balanced headphone out |
Standard 4.4mm port*1+XLR4 balanced plug*1 |
Headphone out |
Standard 3.5mm port |
| Digital optical input port |
Optical plug |
Digital coaxial input port |
RCA plug |
| Digital optical output port |
Optical plug |
Digital coaxial output port |
RCA plug |
| Balanced line output port |
XLR3 balanced plug |
Single-ended line output port |
RCA plug |
| Balanced line input port |
Standard 4.4mm port |
Single-ended line input port |
RCA plug |
| Slide switch |
Ground selector switch |
Housing grounding terminal |
M4 banana plug (Can be directly connected to use) |
| Ethernet port |
1000Mbps |
TRIGGER IN port |
Standard 3.5mm port |
| Power Supply Parameters |
| Power supply |
AC 100-120V/220-240V~50/60Hz |
Battery capacity |
N/A |
| Audio Parameters |
| Performance and parameters of headphone output (6.35mm out, USB DAC/Coaxial decoding/Optical decoding, Ultra high gain mode) |
| Output power 1 |
L+R≥1800mW+1800mW (16Ω, THD+N＜1%) |
Output impedance |
＜1Ω (32Ω) |
| Output power 2 |
L+R≥1850mW+1850mW (32Ω, THD+N＜1%) |
Crosstalk |
≥76dB (1kHz@32Ω) |
| Output power 3 |
L+R≥240mW+240mW (300Ω, THD+N＜1%) |
THD+N |
＜0.0005% (1kHz/-12dB@32Ω) |
| Noise floor |
＜5μV (A-weighted) |
SNR |
≥124dB (A-weighted) |
| Frequency response |
20Hz~20kHz: attenuation＜0.05dB
20Hz~90kHz: attenuation＜3dB |
Peak output voltage |
＞24Vp-p |
| Performance and parameters of headphone output (6.35mm out, USB DAC/Coaxial decoding/Optical decoding, Super high gain mode) |
| Output power 1 |
L+R≥1800mW+1800mW (16Ω, THD+N＜1%) |
Output impedance |
＜1Ω (32Ω) |
| Output power 2 |
L+R≥1000mW+1000mW (32Ω, THD+N＜1%) |
Crosstalk |
≥76dB (1kHz@32Ω) |
| Output power 3 |
L+R≥120mW+120mW (300Ω, THD+N＜1%) |
THD+N |
＜0.00056% (1kHz/-9dB@32Ω) |
| Noise floor |
＜5μV (A-weighted) |
SNR |
≥121dB (A-weighted) |
| Frequency response |
20Hz~20kHz: attenuation＜0.05dB
20Hz~90kHz: attenuation＜3dB |
Peak output voltage |
＞17Vp-p |
| Performance and parameters of single-ended line output (RCA out, USB DAC/Coaxial decoding/Optical decoding) |
| THD+N |
＜0.00053% (1kHz/-10dB@10kΩ) |
SNR |
≥121dB (A-weighted) |
| Crosstalk |
≥118dB (1kHz@10kΩ) |
Noise floor |
＜2.2μV (A-weighted) |
| Frequency response |
20Hz~20kHz: attenuation＜0.05dB
20Hz~90kHz: attenuation＜3dB |
Line output level |
2.5Vrms (1kHz@10kΩ) |
| Performance and parameters of balanced headphone output (4.4mm/XLR4 out, Coaxial decoding/Optical decoding, Ultra high gain mode) |
| Output power 1 |
L+R≥1800mW+1800mW (16Ω, THD+N＜1%) |
Output impedance |
＜1.5Ω (32Ω) |
| Output power 2 |
L+R≥4000mW+4000mW (32Ω, THD+N＜1%) |
Crosstalk |
≥119dB (1kHz@32Ω) |
| Output power 3 |
L+R≥950mW+950mW (300Ω, THD+N＜1%) |
THD+N |
＜0.00049% (1kHz/-13dB@32Ω) |
| Noise floor |
＜7.9μV (A-weighted) |
SNR |
≥124dB (A-weighted) |
| Frequency response |
20Hz~20kHz: attenuation＜0.05dB
20Hz~90kHz: attenuation＜3dB |
Peak output voltage |
＞48Vp-p |
| Performance and parameters of balanced headphone output (4.4mm/XLR4 out, Coaxial decoding/Optical decoding, Super high gain mode) |
| Output power 1 |
L+R≥1800mW+1800mW (16Ω, THD+N＜1%) |
Output impedance |
＜1.5Ω (32Ω) |
| Output power 2 |
L+R≥3900mW+3900mW (32Ω, THD+N＜1%) |
Crosstalk |
≥119dB (1kHz@32Ω) |
| Output power 3 |
L+R≥480mW+480mW (300Ω, THD+N＜1%) |
THD+N |
＜0.00054% (1kHz/-10dB@32Ω) |
| Noise floor |
＜7.9μV (A-weighted) |
SNR |
≥123dB (A-weighted) |
| Frequency response |
20Hz~20kHz: attenuation＜0.05dB
20Hz~90kHz: attenuation＜3dB |
Peak output voltage |
＞34Vp-p |
| Performance and parameters of balanced line output (XLR3, USB DAC/Coaxial decoding/Optical decoding) |
| THD+N |
＜0.00045% (1kHz/-10dB@10kΩ) |
SNR |
≥125dB (A-weighted) |
| Crosstalk |
≥121dB (1kHz@10kΩ) |
Noise floor |
＜2.6μV (A-weighted) |
| Frequency response |
20Hz~20kHz: attenuation＜0.05dB
20Hz~90kHz: attenuation＜3dB |
Line output level |
5Vrms (1kHz@10kΩ) |
