With jack adapters, is it possible to use this to play sound from 2 computers to a single output?

I know this is an old question, but for the benefit of others reading these, I'll answer it. In THEORY - YES, but in practice, not advised. You'd need to feed pc1 left into input 1, pc1 right into input 2, pc2 left into input 3 and pc2 right into input 4. You'd then get 1 output (consisting of a mono output of left AND RIGHT channels from both pc's on a single socket - as I said, less than satisfactory. Far better use the Xenyx 502, which will support stereo outs!

Does it work on 240 volts?

The power input is for 12 volts, but in the UK it comes with an adaptor so it can run off the mains supply (which is nominally 230 volts).The information on the adaptor states that it can handle voltages from 100 to 240 volts and draws 300 milliamps.Output is 12volts Direct Current - 150 mA.

Would this work between a low impedance mic to an active speaker like most bands use now?

I use it for line level instruments into a guitar amp, which works fine. It has quarter inch inputs, not cannon, so any mics would need to use quarter inch cables. There is no gain or eq, so I would probably go for a mixer with more controls for a band. Saying that, it’s only £20, so if it doesn’t work as you want, you can always use it to chain four more inputs into a larger mixer.

Since its mono, I'd only hear a signal through one speaker or do I hear same signal through both of my speakers? My speaker only has one 3.5 mm cable.

Depends on your cable. I assume your 3.5 mm cable is stereo, this will produce sound in 1 speaker. use a stereo>mono adapter to get same sound in both speakers.

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Behringer MX400 MicroMIX 4-Channel Mono Line Mixer for Guitar, Synth, Podcast & Studio, Ultra Low-Noise Audio Blender with Level Controls, 12V Adapter Included

Product ID: 48215608

Details

Brand
Behringer
Connectivity technology
1/4" TS
Item weight
0.01 Ounces
Number of channels
4
Product dimensions
103D x 46W x

📏Compact 103x46x103mm footprint

🔇Ultra-low noise with premium 4580 op-amps

🎚️4 mono channels for precise blending

S$31

Duties & taxes included

In stock

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Description

🎛️ Mix like a pro, wherever you go—because your sound deserves the spotlight.

PLUG PLAY READY - Includes 12V adapter for instant setup—just add your UK plug adapter if needed.
CRYSTAL CLEAR SOUND - Premium op-amps ensure ultra-low noise, preserving every sonic detail at max volume.
MONO MIXING MASTERY - Seamlessly blend up to 4 audio sources into one clean output—perfect for pro setups.
SPACE SAVING DESIGN - Compact and portable, fits effortlessly on your desk, pedalboard, or podcast rig.
PRECISION VOLUME CONTROL - Dedicated level knobs on each channel let you craft the perfect balanced mix.

The Behringer MX400 is a compact 4-channel mono line mixer designed for musicians, podcasters, and studio pros. Featuring ultra-low noise 4580 op-amps and individual level controls, it blends multiple audio sources into a pristine, balanced output. Its small footprint and included 12V power adapter make it an essential, ready-to-use tool for streamlined audio setups.

Specifications

ASIN	B000KGYAYQ
Audio Input	Auxiliary
Best Sellers Rank	2,565 in Musical Instruments & DJ ( See Top 100 in Musical Instruments & DJ ) 2 in Unpowered Audio Mixers
Brand Name	Behringer
Connectivity Technology	1/4" TS Connectors
Country of Origin	China
Customer Reviews	4.2 4.2 out of 5 stars (2,573)
Global Trade Identification Number	04033653020633
Item Dimensions D x W x H	103D x 46W x 103H millimetres
Item Weight	0.01 Ounces
Manufacturer	Behringer
Manufacturer Part Number	MX400
Model Number	MX400
Noise Level	16 Decibels
Number of Channels	4
Number of Items	1
Output Connector Type	Jack 3.5 mm
Power Source	DC Power Supply
Product Warranty	Community. Musictribe. Com. Support.
Software Update Supported to Date	unknown
UPC	689076752374 700315912479 738878219612 133587590951 411378073051
Unit Count	1.0 count
Voltage	12 Volts

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