True Stereophonic Sound is Marshall's unique solution for multi-directional sound and custom tuning that makes the speaker produce a sound much larger than its size. True Stereophonic Sound creates a rich sound image that sounds more or less the same from all angles.

A device’s IP rating indicates how well it’s protected against water and dust. Stockwell III is IP55-rated meaning that it is protected from dust ingress and low-pressure water jets.

Yes, you can charge a device such as a phone or tablet using the USB-C cable provided with the speaker. Turn on the speaker, plug in your device using the cable and charge it.

Yes, you can repair your Stockwell III yourself by replacing certain parts, such as the silicone sleeve, strap or metal grille. As the battery ages, you can also replace it yourself. The spare parts you can replace yourself are available on marshall.com. If you have a valid warranty claim, we offer repair at one of our authorised service partners. If your product needs repairs after your warranty period, we offer a paid repair service by authorised service partners using original Marshall parts. Note that repair service may vary between different markets.