The 50S had a very clever 3.5mm port included in the mount. When used, it would automatically disable the helmet speakers AND switch to separarate volume controls. This was a VERY useful feature. Unfortunately, Sena took a step backward with the 60S and all models released after it as not only is the port no longer on the mount, but there are no separate volume controls when using the 3.5mm adapter harness they include. I would love to see Sena bring back separate volume controls and a dedicated 3.5mm port on the mount for earbuds. Further, if they could also include another port that their ANC earbuds could also utilize, this would be excellent!