General Specifications
Name/Model KA13 Hardware solution DAC: CS43131 *2 
Color Midnight black/Dawn silver Dimensions About 56.5*22*10.5mm
Weight About 19g Adaptive impedance PO: 16~150Ω
Sampling rate indication RGB ambient light BAL: 16~300Ω
Max supported sampling rate 384K/32bit Firmware upgrade System firmware can be upgraded via USB
DSD64/128/256 FIIO control Supported
384K/32bit (coaxial)    
Buttons and Ports
USB port Type-C USB 3.5mm plug Single-ended/SPDIF output (shared)
Physical button Adjust volume, switch songs 4.4mm plug Balanced output
Toggle switch Desktop mode switch    
Audio Parameters
Parts of performance and parameters (3.5mm headphone out，, THD+N<1%, USB IN)
Output power L+R>290mW+290mW@16Ω(Desktop Mode ON) L+R≥70mW+70mW@160(Desktop Mode OFF) Peak output voltage ≥2.3V (32Ω, THD+N<1%)

L+R>170mW+170mW@32Ω(Desktop Mode ON)  
L+R>50mW+50mW@32Ω(Desktop Mode OFF)

 

L+R>19.5mW+19.5mW@30000(Desktop Mode ON)
L+R>5mW+5mW@30000(Desktop Mode OFF)

 

 Output impedance <1.7Ω
Frequency response 20Hz~20kHz, damping≤0.1dB  Crosstalk ≥72dB (1kHz, 32Ω)
20Hz~50kHz, damping≤0.2dB Noise floor 2.5uV&1.7uV"A"
THD+N <0.0005% (0dB, 32Ω) SNR ≥122dB (32Ω, A-weighted)
Parts of performance and parameters (4.4mm headphone out)
Output power L+R>500mW+500mW@16Ω(Desktop Mode ON) L+R>260mW+260mW@16Ω(Desktop Mode OFF) Peak output voltage ≥4.2V (32Ω, THD+N<1%)
L+R>550mW+550mW@32Ω(Desktop Mode ON) L+R≥170mW+170mW@16Ω(Desktop Mode OFF)
L+R>78mW+78mW@30000(Desktop Mode ON) L+R>20mW+20mW@160(Desktop Mode OFF) Output impedance <1.8Ω
Frequency response 20Hz~20kHz, damping≤0.1dB Crosstalk ≥110dB (1kHz, 32Ω)
20Hz~50kHz, damping≤0.1dB Noise floor 4.6uV&3.1uV"A"
THD+N <0.0005% (-5dB, 32Ω) SNR ≥122dB (32Ω, A-weighted)

Frequency response curve 1 

 

 Test conditions: USB DAC in, -5dB sinusoidal signal, 20Hz-20kHz PO output (32Ω load)

Blue: Left channel; Red: Right channel 

Frequency response curve 2

 

Test conditions: USB DAC in, -5dB sinusoidal signal, 20Hz-50kHz PO output (32Ω load)

Blue: Left channel; Red: Right channel

Frequency response curve 4

 

Test conditions: USB DAC in, -5dB sinusoidal signal, 20Hz-50kHz BAL output (32Ω load)

Blue: Left channel; Red: Right channel

Frequency response curve 3

 

Test conditions: USB DAC in, -5dB sinusoidal signal, 20Hz-20kHz BAL output (32Ω load)

Blue: Left channel; Red: Right channel

Amplitude distortion 2

 

Test conditions: USB DAC in, 0dB sinusoidal signal BAL output (600Ω)

Amplitude distortion 1 

 

Test conditions: USB DAC in, 0dB sinusoidal signal PO output (600Ω)

THD+N curve 1   

 

Test conditions: USB DAC in, -2dB sinusoidal signal, 20Hz-20kHz high gain PO output (32Ω load)

Blue: Left channel; Red: Right channel

THD+N curve 2

 

Test conditions: USB DAC in, -5dB sinusoidal signal, 20Hz-20kHz high gain BAL output (32Ω load)

Blue: Left channel; Red: Right channel