| Name/Model No. | K19 |
| Hardware solution | DAC: ES9039SPRO*2; USB: XMOS XU316; Bluetooth decoding: QCC5125; AMP: 8-way THX788+ |
| Working mode | USB DAC mode/Coaxial decoding mode/Optical decoding mode/HDMI decoding mode/HDMI ARC decoding mode/Bluetooth receiving mode |
| Color | Black/Silver |
| Weight | About 1800g |
| Dimensions | About 250x225x36.7mm |
| Volume control type | Knob/Remote control |
| MQA | Support MQA global decoding |
| Drive-free mode (Switch mode) | Surpported |
| Gain | Ultra high gain/Super high gain/High gain/Medium gain/Low gain |
| Bluetooth reception (5.1) | SBC/AAC/aptX/aptX LL/aptX HD/atpX Adaptive/LDAC |
| Display | 1.30-inch TFT (240*240) fully laminated screen |
| Display status indication | Display indication: volume, gain, output mode, working mode, transmission format, sampling rate, EQ, etc. |
| Bluetooth format indication | Surpported |
| Sample rate indication | Surpported |
| FIIO Control | Surpported |
| Firmware upgrade | System firmware: upgrade through front panel USB interface XMOS firmware: upgrade via front or rear panel USB interface Bluetooth Firmware: Upgrade via FIIO Control |
| Coaxial input decoding: supports up to 192kHz/24bit; DSD64 | Green：DSD64/128/256/512 |
| Optical input decoding: supports up to 96kHz/24bit | Magenta：MQA |
| Optical fiber output: supports up to 192kHz/24bit | Cyan：AAC |
| HDMI decoding: supports up to 192kHz/24bit | Purple：aptX/aptX LL |
| HDMI output: supports up to 192kHz/24bit | Yellow：aptX HD |
| HDMI ARC decoding: supports 44.1/48kHz | Green：aptX Adaptive |
| Buttons | Encoder knob (volume knob with button*1+menu knob with button*1) |
| USB interface | Type-C USB (data transmission interface*2+RS232 DSP adjustment interface*1) |
| DC power input interface | Φ6.2mm DC socket |
| Toggle Switches | DC power supply and AC power supply selector switch*1+ground selector switch*1 |
| Digital optical input interface | fiber optic socket |
| Digital coaxial input interface | RCA socket |
| Digital optical output interface | fiber optic socket |
