Model New K3 K3 E10K TC
USB Type C (data transfer) Type C (data transfer Type C (data transfer
PO-single-ended 3.5mm 3.5mm 3.5mm
PO-balanced 2.5mm 2.5mm /
LO output 3.5mm port 3.5mm port 3.5mm
Optical output SC SC /
Coaxial output RCA RCA RCA
Volume knob Power on/off+Volume adjustment Power on/off+Volume adjustment Power on/off+Volume adjustment
USB Audio USB1.0 supports 44.1/48/88.2/96kHz;
USB2.0 supports 44.1/48/88.2/96/176.4
/192/384kHz and DSD64, DSD128, DSD256
USB1.0 supports 44.1/48/88.2/96kHz;
USB2.0 supports 44.1/48/88.2/96/176.4
/192/384kHz and DSD64, DSD128, DSD256
USB2.0supports44.1/48/88.2/96/176.4
/192/384KHz

 
GAIN 6dB per level; ON/OFF 6dB per level; ON/OFF Toggle switch, 2 levels available
BASS ON/OFF ON/OFF Toggle switch, 2 levels available
Indicator light Sampling rate indication:
≤48kHz: blue light;
>48kHz: yellow light
DSD: green light
Sampling rate indication:
≤48kHz: blue light;
>48kHz: yellow light
DSD: green light
Non RGB indicator light
1. Working status: blue light is on when powered on
2. DC protection: blue light is off
XMOS XUF208-256-TQ64 XUF208-256-TQ64 XMOS  XUF208-128-QF48
MCU UM8005 STM8  /
DAC ES9038Q2M AK4452 PCM5102
LPF SGM8264-2 OPA1612 OPA1662
Switch for driver-free mode Yes Yes NO
USB Audio Mode UAC2.0/UAC1.0 UAC2.0/UAC1.0 UAC2.0
AMP voltage ±4.3V ±4.2V /
Housing material Aluminium alloy Aluminium alloy Aluminium alloy
Color Black Black Black
Dimensions Approx. 70.2*58*22mm Approx. 70.2*58*22mm 79mm x 49.1mm x21mm
Weight Approx. 82g Approx. 82g Approx.78g
Output Power (THD<1%) PO 114mW(32Ω) PO 117mW(32Ω) PO 2.65V&219mW(32Ω)
BAL 200mW(32Ω) BAL 200mW(32Ω) LO 1.47V&217mW(10Ω)
SNR (G=H, A-weighted+Low pass) PO 121dBr PO 114dBr PO 114dB
BAL 120dBr BAL 112.5dBr BAL /
LO 121dBr LO 114dBr LO 116dB
Noise floor (G=H, low pass) PO ≤4μV PO ≤8μV

PO

7.8uV(Bass=off)
BAL ≤6μV BAL ≤12μV 8.7uV(Bass=on)
LO ≤3μV LO ≤7μV LO 3.3uV
Crosstalk (1kHz, 32Ω) PO 79dB PO 80dB PO /
BAL 109dB BAL 106dB BAL /
LO 91dB LO 93dB LO /
Output Level (THD<1%, 32Ω) PO 1.9V PO 1.9V PO /
BAL 2.6V BAL 2.57V BAL /
LO 1.95V LO 1.9V LO /
THD+N
(G=H, 1kHz 32Ω)
PO 0.002% PO 0.005% 0.006%
BAL 0.003% BAL 0.007%
LO 0.002% LO 0.005%
Frequency response (Tone OFF 1/8 rated power) PO 0.13dB, 5dB bass boost PO 0.3dB, 5dB bass boost PO

20~20kHz

0.42dB curve amplitude variation

BAL 0.13dB, 5dB bass boost BAL 0.3dB, 5dB bass boost LO
LO 0.2dB LO 0.3dB BASS up to 5.5dB promoted
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