I just upgraded my iPhone 6 to IOS11, as a test for my iPad. The test failed. Before the test my iPhone played audio normally through the iConnectMIDI2+. Now what I get can best be described a a kind of stroboscope effect. Absolutely horrible.
When I plug in my iPad, still on IOS10, everything sounds normal. My Mac is on High Sierra. I restarted everything, but I could not fix it.
I find this hard to believe. I googled for problems before upgrading, and I could not find anything like this. There have been about ten beta's of IOS11. How is this possible?