Topping MX3S

Specs :
Max playback support
USB: 24-bit/192kHz
Coax/opt: 24-bit/192kHz
Bluetooth: AAC, SBC, aptX, aptX HD, aptX Adaptive

MX3s headphone amplifier specs :
THD+N@1kHz (A-wt)
USB/OPT/COAX: <0.003% @270mW (300Ω) / <0.001% @30mW (300Ω)
AUX: <0.003% @270mW (32Ω) / <0.001% @30mW (300Ω)
Bluetooth (aptX adaptive): <0.003% @270mW (32Ω) / <0.002% @30mW (300Ω)
SNR @ 1kHz (A-wt)
USB/OPT/Coax: 115dB
AUX: 127dB
Bluetooth: 115dB
Dynamic range @1kHz (A-wt)
USB/OPT/Coax: 115dB
AUX: 127dB
Bluetooth: 115dB

Frequency response :
USB/OPT/Coax: 20Hz - 20kHz (+0.1dB/-0.3dB)
AUX: 20Hz - 20kHz (+0.1dB/-0.1dB)v Bluetooth: 20Hz - 20kHz

Output level :
USB/OPT/Coax: 3.4Vpp (low gain) / 15.6Vpp (high gain)
AUX: 10.2Vpp (low gain) / 14.4Vpp (high gain)
Bluetooth: 3.4Vpp (low gain) / 15.6Vpp (high gain)

Noise (A-wt) :
USB/OPT/Coax: <2.0uVrms (low gain) / <7.0uVrms (high gain)
AUX: <2.0uVrms (low gain) / <7.0uVrms (high gain)
Bluetooth: <2.0uVrms (low gain) / <7.0uVrms (high gain)

Channel crosstalk :
USB/OPT/Coax: -90dB
AUX: -90dB
Bluetooth: -90dB

Input sensitivity :
USB/OPT/Coax: 0dBFS (low gain) / 0dBFS (high gain)
AUX: 4.2Vrms (low gain) / 1.2Vrms (high gain)
Bluetooth: 0dBFS (low gain) / 0dBFS (high gain)

Gain :
USB/OPT/Coax: 2dB (low gain) / 14.8dB (high gain)
AUX: -0.2dB (low gain) / 12.6dB (high gain)
Bluetooth: 2dB (low gain) / 14.8dB (high gain)
Output impedance: <0.5Ω

Output power :
700mW x2 @32Ω THD+N <1%
400mW x2 @64Ω THD+N<1%
100mW x2 @300Ω THD+N<1%
Load impedance: >8Ω

MX3s power amplifier specs :
THD+N@1kHz (A-wt)
USB/OPT/COAX: <0.005% @5W (4Ω) / <0.004% @5W (8Ω)
AUX: <0.005% @5W (4Ω) / <0.004% @5W (8Ω)
Bluetooth (aptX adaptive): <0.005% @5W (4Ω) / <0.004% @5W (8Ω)
SNR @ 1kHz (A-wt)
USB/OPT/Coax: 110dB
AUX: 110dB
Bluetooth: 110dB
Dynamic range @1kHz (A-wt)
USB/OPT/Coax: 110dB
AUX: 110dB
Bluetooth: 110dB

Frequency response :
USB/OPT/Coax: 20Hz - 20kHz (+0.1dB/-0.5dB)
AUX: 20Hz - 20kHz (+0.1dB/-01.5dB)
Bluetooth: 20Hz - 20kHz

Output level :
USB/OPT/Coax: 40Vpp (4Ω) / 44Vpp (8Ω)
AUX: 40Vpp (4Ω) / 44Vpp (8Ω)
Bluetooth: 40Vpp (4Ω) / 44Vpp (8Ω)

Noise (A-wt) :
USB/OPT/Coax: <60uVrms (low gain) / <100uVrms (high gain)
AUX: <60uVrms (low gain) / <100uVrms (high gain)
Bluetooth: <60uVrms (low gain) / <100uVrms (high gain)

Channel crosstalk :
USB/OPT/Coax: -90dB
AUX: -90dB
Bluetooth: -90dB

Input sensitivity :
USB/OPT/Coax: -2.0dBFS (low gain) / -8dBFS (high gain)
AUX: 1.0dBFS (low gain) / 0.5dBFS (high gain)
Bluetooth: -2.0dBFS (low gain) / -8dBFS (high gain)

Gain
USB/OPT/Coax: 26.5dB (low gain) / 32.5dB (high gain)
AUX: 24dB (low gain) / 30dB (high gain)
Bluetooth: 26.5dB (low gain) / 32.5dB (high gain)
Output impedance: <0.2Ω

Output power :
62W x2 @4Ω THD+N<10%
50W x2 @4Ω THD+N<1%
40W x2 @8Ω THD+N<1%
30W x2 @8Ω THD+N<1%
Load impedance: 4-8Ω