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
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)
Coaxial input decoding: Up to192kHz/24bit; DSD64
Optical input decoding: Up to96kHz/24bit
Coaxial output: Up to192kHz/24bit; DSD64
Optical output: Up to192kHz/24bit
Streaming decoding: Up to384kHz/32bit; DSD256 (DOP)
Local playback: Up to384kHz/32bit; DSD256
Screen status indication:
Working mode, output mode
Track format, sampling rate
EQ, volume
Network status, Bluetooth codec
Gain, time
Adaptive impedance:
PO: 8~150Ω
BAL: 8~350Ω
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: AC 100-120V/220-240V~50/60Hz

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