I ride with a Schuberth C3 which is a nicely quiet helmet. When I commute (a simple half-hour ride to work) I'd like to use in-helmet speakers as it's less hassle and they work OK in such a quiet lid. However, when I head out on longer weekend rides and tours I much prefer to use my custom earphones.
Has Sena thought about making a baseplate similar to the SMH-A0304 but with both attached helmet speakers *and* an earphone jack? Just like on a cel phone, when someone plugs the earphones in to the jack the speakers would shut off, making it quick and easy to choose what type of audio output to use that day. I think a lot of commute+tour combo riders like myself would appreciate that kind of option.