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  • Dual CS43131 DACs
  • 4.4mm balanced out
  • Supports up to DSD256 and 32bit/384kHz PCM Hi-Res audio
  • Supports FiiO Control APP
  • 5 digital filters to choose
  • Compatible with Android/iOS/Windows/MacOS
  • Ring-shaped RGB indicator
  • Industrial design
  • Metal construction
  • Classic black and gold color | Hi-Res Audio certified
General specifications
Name/Model KA2 Color Classic Black
Hardware DAC: CS43131*2 FiiO Control support
Weight About 12.3g Size

fuselage: about 40mm x 15mm x 12mm.

Line length: 70mm

Audio Input Interface Type-C Cable or Lightning Headset output interface 4.4mm socket
Firmware Upgrade The system firmware can be upgraded through USB sample rate indication

Blue: below 48kHz

Yellow: above 48kHz

Green: DSD

Channel Balance


impedance adaptation

16 to 300 Ω

The Highest Supported Sampling Rate 384KHz/32bit Support DSD DSD64/128/256
Power Supply Parameters
Power Supply Battery Capacity
Audio Parameters
Headset Output Part Performance Parameters (4.4mm)
Output Power 112mW (16Ω,THD+N<1%) Output Amplitude 2.2V(32Ω/THD+N<1%)
153mW (32Ω,THD+N<1%) Channel Separation ≥ 91dB(1Khz,32 Ω load)
54mW (300Ω,THD+N<1%)
27mW(600Ω,THD+N<1%) Output Impedance <0.5 Ω (load 32 Ω)
Frequency Response 20Hz to 20KHz, the curve amplitude changes by 0.03dB. signal-to-noise ratio ≥ 125dB(32 Ω A)
20Hz to 50KHz, the curve amplitude changes by 0.05dB. ≥ 131.2dB (600 Ω A)
Bottom Noise <1.1uV(32 Ω-A) Distortion Plus Bottom Noise <0.00036%(32 Ω)
<0.00023%(600 Ω)
<1.05uV(600Ω-A) <0.00024%(32 Ω A)
<0.00014%(600 Ω A)

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