TOPPING MX3s Desktop USB DAC & Headphone Amplifier & Speaker Amplifier

Experience audio perfection with the Topping MX3S—an upgraded all-in-one desktop solution for audiophiles. This compact powerhouse combines a high-performance AKM DAC, advanced Bluetooth connectivity, and a Merus Class D power amp chipset. Whether driving speakers or powering headphones, the MX3S delivers outstanding performance with an automatic on/off function for convenience. With a built-in EQ function and comprehensive audio system capabilities, it's the ultimate choice for a versatile and immersive audio experience.

Versatile Audio Solution: An upgraded version of the classic MX3, the MX3S is the ultimate all-in-one desktop solution for audio enthusiasts. Whether you're seeking high-performance audio decoding, a powerful speaker amp, or a robust headphone amplifier, the MX3S delivers it all in a super compact form factor. Enjoy your favorite music and movies through various devices, from in-ear monitors to full-sized headphones and even a 2.1 speaker system.

High-Resolution AKM DAC: Featuring a high-performance AKM DAC chip, the MX3S supports decoding of high-resolution audio signals up to 24-bit/192kHz. Immerse yourself in rich, clean, and smooth audio output for an elevated listening experience.

Advanced Bluetooth Connectivity: Equipped with Qualcomm's QCC3040 Bluetooth Chipset, the MX3S ensures high-definition Bluetooth input with support for LDAC, AptX HD, AptX, AAC, and SBC codecs. Enjoy seamless wireless connectivity for your devices.

High-Power Headphone Output: Experience a one-stop solution for all your audio needs. The MX3S houses a high-power headphone amplifier, providing up to 700mW of clean power. With two-level gain modes, it accommodates both sensitive IEMs and high-power demanding headphones.

Built-In EQ Function: Take control of your audio with the built-in EQ function. Adjust the Bass and Treble response within a range of -10dB to +10dB, customizing the output to suit your preferences.

Auto Off for Effortless Operation: Experience convenience with the automatic on/off function on digital inputs. The MX3S detects input signals, automatically powering on, and enters standby mode when the signal is inactive for a minute.

Compact Powerhouse: With a Merus Class D power amplification chipset, the MX3S packs a punch, delivering up to 62W of clean output per channel for speakers at 4Ω. The compact size doesn't compromise on power, making it ideal for driving most bookshelf speakers.

Specifications:
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)
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

Packing list:
TOPPING MX3s
Power adapter
Power cable
USB cable
Remote control
Bluetooth antenna
User manual
Warranty card