I have a slighltly different problem related to the Seido adapter. Based on reviews here, I bought one about 6 weeks ago now. It worked for about a week. Now, the sound cuts in and out. It's not one side or the other, just what we'd all call a bad connection. The plug fit is still very tight, but I can't tell if it is the adapter or the connection on the 8830 that is the problem. Is there anyway of figuring that out without having to pay for another adapter?