TOPPING MX3S All In One Desktop Amplifier User Manual

: June 15, 2024
: TOPPING

Table of Contents

Contents list
Attribute
Front panel
Rear panel
Display
Remote control
Operation
Setup Menu
Input range
Specifications
Trouble shooting.
Precautions for daily use
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TOPPING MX3S All In One Desktop Amplifier User Manual

Thank you for purchasing all-in-one amplifier MX3s. We hope it could bring you more fun at enjoying music! Before making any connections or using this product, we recommend you read this manual first so that you can use all the features of MX3s correctly and get the most listening pleasure.

Contents list

MX3s: x1
Power adaptor: x 1
Power cable: x1
USB cable: x1
Remote control: x1
Bluetooth antenna: x1
User manual: x1
Warranty card: x1
Note: You can download the drivers and user manual on http://www.topping.audio/.

Attribute

Measured: 12.0cm x 16.5cm x 4.0cm
Weight: 510g
Power input : DC26V/5.76A (DC base 5.5*2.1)
Signal input: USB/OPT/COAX/BT/AUX
Headphone amp output: 3.5mm headphone output jack
Power amp output: Speaker terminal (BTL output)
Sub woofer output: RCA
Display: LED
Standby power consumption : <1W

Front panel

1-1 Remote control receiver
1-2 3.5mm headphone output
1-3 LED screen
1-4 Volume knob /Multi-function Button

Rear panel

2-1 Bluetooth input
2-2 USB input
2-3 Optical SPDIF input
2-4 Subwoofer output
2-5 Coaxial SPDIF input
2-6 Right channel single-ended RCA input
2-7 Left channel single-ended RCA input
2-8 R+ speaker output: positive output of R speaker
2-9 R-speaker output: negative output of R speaker 2-10 L+ speaker output: positive output of L speaker
2-11 L-speaker output: negative output of L speaker
2-12 Power input (DC26V)

Display

3-1 Input channel
3-2 Treble indicator 3-3 Bass indicator
3-4 Gain indicator
3-5 Sample rate/volume display area
3-6 Volume unit
3-7 Output channel

Remote control

4-1 Standby
4-2 Volume up
4-3 Previous
(Valid when USB/BTinput)
4-4 Volume down
4-5 Treblesetting
4-6 Inputchannel switching (press)/Gainsetting (press and hold)
4-7 Auto poweron&standby
4-8 Mute
4-9 Play/Pause
(Valid when USB/BT input)
4-10 Next
(Valid when USB/BT input)
4-11 Basssetting
4-12 Output channel switching
4-13 Brightness

Operation

Power on & off / standby operation

Power on: When connect to power supply, MX3s enters the standby state, the screen displays a bright spot.
Standby setting: When it is working, press and hold the knob on the front panel to enter standby state and short press to exit standby state when it is in standby. Or you can directly press the standby button on remote control to enter or exit standby state.

Note

When the digital input’s automatic standby function is on,

if the current digital input is not connected or digital input signal is invalid in 1 minute, it will automatically enter the standby state. Once having detected valid digital signal, it will automatically return to working state.

Volume setting

Mute setting and volume restoring: Use the mute button on the remote control to set mute, press the mute button again or adjust the volume to restore volume.
Volume adjusting: Adjust volume by the knob on the panel or up or down button on the remote control. Long press the volume up/down button will quickly adjust the volume, so please be careful in order to protect your hearing.

Input channel switching

Press the SEL button on the remote control or the knob on the front panel to switch the input in cycle.

Output channel switching

Press the MODE button on the remote control or double press the knob on the front panel to switch the output channel. “O-1” indicates only power amp output; “O-2” indicates only headphone amp output; “O-3” indicates that both are outputting. Power amp output includes subwoofer output and speaker output.

Gain setting

Press and hold the SEL button of the remote control to set the gain of the current output channel. You also can change the gain to high by pressing the volume knob and turning it clockwise by 2 steps in 1.5 seconds while the knob is pressed. To change the gain to low, press the volume knob and turning it counterclockwise by 2 steps.
Enter the setup menu to set the gain of each output channel.

Treble and Bass setting

Settable range: -10 to 10 (default: 0).
Press the TRE/BASS button on the remote control to enter the setup, use the ‘+’ and ‘-‘ buttons on the remote control or the knob to change the setting, press the TRE/BASS button again to exit the setup.
Treble and Bass setting

Brightness

L-1, L-2 and L-3 respectively indicate low, medium and high brightness. L-A has the same brightness as L-2. The differences lie in when there is no operation after 30 seconds under L-A mode, the screen will be automatically turned off, only displays the current input. For example, when it is in USB input, MX3s displays as follow. You can press any button to light up the screen.

Enter Bluetooth pairing mode

When MX3s is in Bluetooth input state, keep pressing the brightness button for 3 seconds to disconnect the existing Bluetooth connection and forcibly enter into Bluetooth pairing state.

Factory reset

In standby state, turn the knob on the front panel counterclockwise until the screen lights up completely, and the factory settings can be restored.

Enter the setup menu

When in standby state, press and hold the knob will enter the setup menu.

Change and save of settings

The volume knob on the front panel: press the knob to enter the next setting item, rotate the knob to set different parameters. Press and hold the knob until “8-8” is displayed on the screen to save the settings.
The remote control: press the volume up/down button to enter the previous/next setting item, press the left/right button to set different parameters. Press the middle button and MX3s displays “8-8” indicating that the settings have been saved.

Setting descriptions

Screen brightness setting (Available for remote control setting)

Screen display: Description
L-1: Low
L-2: Mid (Default)
L-3: High
L-A: Mid brightness and screen will be turned off automatically after 30 seconds of no operation

Digital input’s auto power on &standby setting

Screen display: Description
A-O: Auto on (Default)
A-C: Auto off

Output channel setting (Available for remote control settin)

Screen display: Description
0-1: Power amp output
0-2: Headphone amp output
0-3: Power amp & Headphone amp output (Default)

Treble setting (Available for remote control settin)

Screen display: Description
TREB: Customized settings from -10dB to +10dB (Default:0dB)

Bass setting (Available for remote control settin)

Screen display: Description
BASS: Customized settings from -10dB to +10dB (Default:0dB)

Power amp gain (Available for remote control settin)

Screen display: Description
GAIN L (Speaker icon) : Power Amp – Low gain (Default)
GAIN=H (Speaker icon): Power Amp – High gain

Headphone amp gain (Available for remote control settin) Screen display: Description
GAIN=L (HP icon): Headphone Amp – Low gain (Default)
GAIN=H (HP icon): Headphone Amp – High gain

Power amp & Headphone amp gain (Available for remote control settin)

Screen display: Description
GAINEL (Speaker+HP icon) : Power amp & Headphone amp – Low gain (Default)
GAIN=H (Speaker+HP icon): Power amp & Headphone amp – High gain

Volume display mode

Screen display: Description
V-dB: Displays the volume in the “dB” unit
V-8:P Displays the volume in the numeric value (Default)

Remote control setting

Screen display : Description
r-O: Remote control enabled (Default)
r-C: Remote control disabled

Bluetooth setting

Screen display: Description
BT ON: Bluetooth enabled (Default)
BT OFF: Bluetooth disabled

Input range

USB IN: 44.1kHz-192kHz/16bit-24bit
COAX/OPT IN : 44.1kHz-192kHz/16bit-24bit
BT IN: AAC/SBC/APTX/APTX-HD/APTX Adaptive

Specifications

MX3s Headphone Amplifier specifications

Channel Crosstalk@1 kHz	-90dB	-90dB	-90dB
Input sensitivity	OdBFS @G=L	4.2Vrms @G=L	OdBFS @G=L
OdBFS @G=H	1.2Vrms @G=H	OdBFS @G=H
Gain	2dB (Vrms/FS) @G=L	-0.2dB @G=L	2dB (Vrms/FS) @G=L
14.8dB (Vrms/FS) @G=H	12.6dB @G=H	14.8dB (Vrms/FS) @G=H
Output Impedance	<0.50
Output Power	700mW x 2 @320 THD+N<11/0

400mW x 2 @640 THD+N<1 %
100mW x 2 @3000 THD+N<1/0
Load Impedance| >80

MX3s Power Amplifier specifications

Trouble shooting.

Phenomenon	Cause	Solution
No sound	MX3s did not power on	Check LED and cable of adapter
Wrong input was selected	Select the correct input
Wrong output was selected	Select the correct output
Incorrect cable connections	Check and reconnect
Sound is muted	Turn up the audio
Audio source no output.	Adjust or check it
Abnormal sound	One channel’s positive output and negative output are
reversed	Check and correct it
PA3s is overloaded	Turn down the volume
High temperature	Turn the power off, wait for the unit to cool down

sufficiently, and then turn the power on again. Please re-install this unit in a
| Bluetooth is disabled on MX3s| Let MX3s enter pairing mode first
| MX3s is already connected to other Bluetooth device| Take the device closer to MX3s and connect again

GAIN -1 / GAIN -2| Firmware upgrade failed| Unplug and re-plug the power cable, and then flash the firmware again.
---|---|---
GAIN -3| Incorrect firmware version| Reflash the correct firmwar.
P-U / P-d| Supply voltage too high/too low| Use TOPPING’s power adapter
r-d / r-r / r-A / P-0| Power supply anomaly or there is a problem with the internal circuitries of this unit.| Use TOPPING’s power adapter. MX3s doesn’t connect to any other devices, and then reboot.
r-H| Abnormal input| Change songs or turn down the volume

Precautions for daily use

The connection between MX3s and the speaker must be correct. L+ to the red jack(+ in) of the left speaker, L-to the black jack(-in) of the left speaker. Connection to the right channel is the same. Please ensure that step is correct before proceeding to the next step. Mx3s is a amplifier with BTL output, the L-and R-jack are separate, they are not connected to the ground or a same point. So if you make a mistake at this step, maybe it will cause serious damage to Mx3s.
Warranty is void when user’s error connection led to a damage.
Whether you need to connect or disconnect a cable, please turn off MX3s first.
To cut the power of AC adapter, please turn off MX3s first, then pull out the power cable or cut the power of adapter.
You must not keep the amplifier in a hot, humid environment or drop it.
Opening the case instantly voids the warranty!
Use TOPPING AC adapter only.
Topping accepts no liability for any loss or damage arising directly or indirectly from the failure of MX3s.
For improvement purpose, specifications subject to changes without prior notice.