This is an Apos Certified product. That means it's refurbished, like new, eligible for our 45-day return policy, carries an Apos Certified One-Year Warranty, and ships from our US facility. Currently, Apos Certified products are only available to customers with a US shipping address. We appreciate your understanding as we aspire to expand our offerings to a broader audience in the future.

A system in a box

The TOPPING MX3s is a comprehensive audio solution that combines a DAC, headphone amplifier, and power amplifier. With this versatile system, you can experience your favorite music and movies through a variety of devices, including in-ear monitors, full-sized headphones, and even a 2.1 speaker system.

24-bit Bluetooth

Stream hi-def music from all of your devices, such as tablets, phones, and laptops. The 24-bit Bluetooth chip supports AAC, SBC, aptX, aptX HD, and aptX Adaptive, achieving lossless transmission with distortion below 0.001%.

Subwoofer output

Don’t just hear the music—feel it with a subwoofer. Connect a subwoofer to the MX3s for a full 2.1-channel premium entertainment experience.

Two-step gain

The MX3s plays well with headphones and speakers of all impedances. Choose high gain or low gain, whether you’re listening to a pair of headphones through the headphone output or a pair of speakers + subwoofer.

On-the-fly EQ adjustments

Grab your remote and make quick adjustments to the bass and treble. Movie night? Increase the treble to bring out that too-subtle dialogue. House party? Bump the bass by a full 10 decibels.

Auto off

A true set-it-and-forget-it unit, the MX3s will automatically go into standby mode sixty seconds after you stop playing music.

Product highlights

• 62W x 2 Class D speaker output
• 700mW x 2 headphone amp
• 24-bit/192kHz AKM DAC chip
• Bluetooth support
• Bass & treble EQ
• Subwoofer out
• Remote control
  

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)
• 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
  

What’s included

• TOPPING MX3s
• Power adapter
• Power cable
• USB cable
• Remote control
• Bluetooth antenna
• User manual
• Warranty card