KA17

This versatile DAC and headphone amplifier is not only portable but also features desktop mode an external dedicated Type-C power port. When there is sufficient USB power, or the independent power port is connected to a power adapter, the Desktop Mode will be enabled, and it will automatically adjust the DAC, amp power, and headphone amplifier to a high-performance state, fully unleashing the potential and output power of the device.

Name/Model: KA17
Hardware Solutions:

• DAC: ES9069Q*2
• USB Decoding: XMOS XU316*1

Color: Black/Blue
Volume Control: Physical buttons
Weight: About 33.5g
Dimensions: About 64×27.7×12.7mm
Driver-Free Mode (Switch Mode): Supported
Desktop Mode: Supported
MQA: Full MQA decoding supported
Channel Balance: <0.2dB

Gain Level: L/H
Status Display: On the display: Transfer format, volume level, gain level, USB mode, sampling rate, etc.
Display: 0.91-inch OLED display
Firmware Upgrade: Supports upgrade via USB

Max Supported Sampling Rate:

• PCM: Supports up to 768kHz/32bit
• DSD: Supports up to SD512 (Native), DOP256
• SPDIF: Supports up to 96kHz/24bit

Recommended Impedance:

• PO: 8~150Ω
• BAL: 8~300Ω

Buttons and Ports

Buttons:

• Multifunction button*1
• Volume up/down*1

USB:

• Type-C USB2.0 (power/data transfer)
• USB Type-C POWER IN (orange, powering)

Headphone Output:

• Standard 3.5mm port (PO/coaxial out shared)

BAL Output:

• Standard 4.4mm port

Toggle Switch:

• Desktop mode switch*1

Power Supply Parameters

Power Supply:

• DC 5V ≥1A

Audio Parameters

Headphone Output Performance and Parameters (3.5mm, UAC Decoding, Desktop Mode: High Gain)

• Output Power:
  L+R ≥320mW+320mW (16Ω, THD+N <1%)
  L+R ≥270mW+270mW (32Ω, THD+N <1%)
  L+R ≥30mW+30mW (300Ω, THD+N <1%)
• Output Impedance: <1Ω
• Crosstalk: ≥75dB
• Output Amplitude: 3Vrms
• THD+N & Noise: <0.0015% (1kHz/-15dB@32Ω)
• SNR: ≥123dB (A-weighted)
• Frequency Response: 20Hz~50kHz: damping <0.5dB
• Noise Floor: <2.1uV (A-weighted)
  20Hz~20kHz: damping <0.1dB

Headphone BAL Output Performance and Parameters (4.4mm, UAC Decoding, Desktop Mode: High Gain)

• Output Power:
  L+R ≥460mW+460mW (16Ω, THD+N <1%)
  L+R ≥650mW+650mW (32Ω, THD+N <1%)
  L+R ≥90mW+90mW (300Ω, THD+N <1%)
• Output Impedance: <1.5Ω
• Crosstalk: ≥114dB
• Output Amplitude: 4.5Vrms
• THD+N & Noise: <0.0004% (1kHz/-8dB@32Ω)
• SNR: ≥126dB (A-weighted)
• Frequency Response: 20Hz~50kHz: damping <0.5dB
• Noise Floor: <2.2uV (A-weighted)
  20Hz~20kHz: damping <0.1dB

Headphone Output Performance and Parameters (3.5mm, UAC Decoding, Non-Desktop Mode: High Gain)

• Output Power:
  L+R ≥110mW+110mW (16Ω, THD+N <1%)
  L+R ≥140mW+140mW (32Ω, THD+N <1%)
  L+R ≥20mW+20mW (300Ω, THD+N <1%)
• Output Impedance: <1Ω
• Crosstalk: ≥80dB
• Output Amplitude: 2Vrms
• THD+N & Noise: <0.0015% (1kHz/-10dB@32Ω)
• SNR: ≥120dB (A-weighted)
• Frequency Response: 20Hz~50kHz: damping <0.5dB
• Noise Floor: <2.0uV (A-weighted)
  20Hz~20kHz: damping <0.1dB

Headphone BAL Output Performance and Parameters (4.4mm, UAC Decoding, Non-Desktop Mode: High Gain)

• Output Power:
  L+R ≥150mW+150mW (16Ω, THD+N <1%)
  L+R ≥300mW+300mW (32Ω, THD+N <1%)
  L+R ≥30mW+30mW (300Ω, THD+N <1%)
• Output Impedance: <1.5Ω
• Crosstalk: ≥110dB
• Output Amplitude: 3Vrms
• THD+N & Noise: <0.0005% (1kHz/-3.5dB@32Ω)
• SNR: ≥120dB (A-weighted)
• Frequency Response: 20Hz~50kHz: damping <0.5dB
• Noise Floor: <2.2uV (A-weighted)
  20Hz~20kHz: damping <0.1dB

• Machine Mode 650mW 650mW Strong Thrust
• Dual Channel Flagship DAC ES9069Q
• Ten-segment high-precision PEQ adjustment
• professional grade XMOS 16 core XU316
• Four-way fully balanced THX AAA 78 amp
• Multi-level HiFi audio architecture
• Anti-crosstalk design of digital-analog split board
• PCM: Supported up to 768kHz/32bit
• DSD: Supported up to SD512 (Native), DOP256
• Supported MQA full decoding