I have the same problem, with both iPhone 6 Plus and iPad Air 2 with iOS 8.2. App crashes consistently after about 10 seconds whether I am connected to AMPLIFI 75 via Bluetooth or not.
Here are all the troubleshooting steps I have tried:
- Uninstalled app, forget Bluetooth device, restart iDevice, reinstall app, reconnect via Bluetooth, restart app, crash.
- Connected amp via USB directly to Win7 PC, use AMPLIFI utility to reinstall 2.1 firmware, retry the steps above with the same result.
- Connected amp via USB directly to Win7 PC, use AMPLIFI utility to downgrade to 2.0 firmware, retry the steps above with the same result.
I'm out of ideas at this point.