There are several different types of 3.5mm. This CloudBox comes with a TRRS (Tip, Ring, Ring, Sleeve) connector to connect to an amplifier / sound system.  Please use the TRRS adaptor provided, or make sure the adaptor used is a TRRS that is CTIA-Style AV (Left Audio, Right Audio, Ground, Video). Connecting TRRS or TRS headphones that have a microphone, such as for a phone, will result in a humming sound on the audio. 

When working with the CloudBox keep in mind many 3rd party cables are not compatible with the Cloudbox and can cause issues like buzzing, humming, or audio that may not pass at all. If you aren't sure if you are, you can identify if its the correct connector type if it has 3 black bands around the end of the audio connector on the 3.5mm output. If your audio setup requires a different type of connector in conjunction to the one provided with your CloudBox.

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