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MK-1 A-B Audio Switch Box : 2 Input 1 Output

Selects Two Inputs to One Output

Now you can Easily Choose between your Audio Devices!

Uses Standard 3.5 mm (1/8 inch) Stereo TRS Mini Plug Input & Output Jacks

 3.5mm 2 Port AB Audio Switch audio switch box


Diagram for connecting the MK-1 audio switch

Connecting a ground loop isolator to the MK-1 audio switch


The MK-1 Audio Switch quickly and easily chooses between any two stereo audio input sources to one output. Easy A-B switching!

Two standard 3.5 mm stereo input jack ports for your audio sources

One 3.5mm stereo output jack port

Size: 2.6 x 2.5 x 1.1 inches - a small, compact, and convenient size that's perfect for many audio installations.

For line level and headphone level audio sources only. CD players, MP3 players, satellite radios, computer sound cards, etc... are examples of unamplified low level audio sources.

Prevent possible equipment damage from repeated insertion and removal of audio cable plugs. A simple audio switcher can eliminate this "wear and tear" on your audio equipment.

One Year Warranty

30 Day Money Back Guarantee

Designed and Assembled in the USA

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For Indoor Use Only

In Stock / Quick Ship!

Need Cables? Mini-Paddle Cables

Quality 3.5 mm Stereo Shielded Audio Cables:

MK-92 : 2 Foot
MK-96 : 6 Foot

Have a question? Scroll down for our FAQ.


Our cables have 1/8 inch ( 3.5 mm ) Stereo Mini Plugs on each end.

Mini-Paddle Cables

MK-96 Six Foot Cable: $2.00
MK-92 Two Foot Cable: $2.00

Looking for a 1 Input 2 Output Audio Switch?

Check out the Model MK-2.

audio switcher a-b audio switch

FAQ: Frequently Asked Questions

Will the MK-1 and MK-2 also work in reverse? Answer: Yes, each switch is bi-directional. These audio switches are labeled for clarity, operational convenience, and ease of use, to avoid confusion for the user. This makes them totally understandable and VERY easy to install! They are the same exact switch.

Do you design and build custom switches? Answer: No.

Are your switches for stereo mini plug (3.5 mm / 1/8 inch) type audio devices? Answer: Yes

Do you make a 5.1 Surround Sound switch? Answer: No.

What do you mean by "low level audio"? Answer: Our audio switches are intended for headphone level and line level output audio. This is un-amplified audio. MP3 players, CD players, satellite radios, computers, etc.... all have this type of un-amplified low level audio output.

Will the MK-1 and MK-2 work in mono with 3.5mm mono plugs and cables? Answer: Yes.

Are the MK-1 and MK-2 audio switches weatherproof and waterproof? Answer: NO. We get a lot of inquiries about using our switches outdoors. Our switches are NOT INTENDED for outdoor use. They are simply not designed to be exposed to moisture or any outdoor environment.

Related Products

audio switches

MK-5 Computer Headset Speaker Switch: Select audio between Speakers and Headphones, with Microphone Feedthrough connection as well.

MK-7 Computer Speaker Switch: Select audio between TWO separate computers and ONE speaker set.

MK-10 Computer Speaker Switch: Choose TWO sets of speakers with ONE computer.

MK-4 Computer Microphone Switch : Switch TWO microphones with ONE computer.


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