Jackie and I ride two-up on an RT-Limited. Enjoyed the pair of SENA 20s we used, but then they got to be inconsistent in operation and the various functions when combined (e.g. intercom with music from phone) didn't always function correctly.
Called SENA and explained the problem. Twice.
First rep said he would send out an RMA via return email, and that we would need to document exactly what we were sending back to SENA for replacement by including very clear pictures of exactly which components we included in the box. Email with RMA never came.
I called and spoke to an entirely different rep whose reaction was sorta WTF??? No pictures necessary. Just find the INVOICE and email that to him. That would generate the RMA and I could return anything I wanted to (and, for example, retain the speakers mounted in the helmets). When received, a replacement would be sent. I sent just the bases, mics and the main units.
Today's FedEx brought an entire, complete new pair. I'll be trying them out soon to see if these play all the games all the time.
I will say the speakers were better quality than any I had used before (Starcom, Autocom)
Pete