Turning Off the iPhone’s phone for uninterrupted App usage.
To avoid interruption while using PRS Jam Amp, you can turn on Airplane mode in iPhone Settings (this will ensure that you are not interrupted during use but will not allow you to receive or place phone calls). If you are on a WIFI network you can use airplane mode to turn off the phone and then enable Wifi to be able to use web and PRS Jam Amp track uploading functionality without call interruption.
If you don’t turn on Airplane mode and receive a call while using , PRS Jam Amp will automatically pause. After the call ends you will be back brought back to the tracks screen if you were playing a track.
If you do turn on Airplane mode while using PRS Jam Amp make sure to turn it off when you are done to resume full phone functionality.
Input Level Issues
There is no input level control on the iPhone. The current Apple developer SDK does not let the app control the input level. To get a lower level, you either have to reduce the volume of the thing you are recording, i.e. turn down the volume control on your guitar.
Getting the “right” sound can be a bit complicated as the iPhone has an automatic gain control circuit, and we have observed differences between the various models iPhones and iPod Touch’s. You should adjust the volume control of your guitar and the Live Input volume (Amp Volume) in Jam Amp before you play with the input boost or crunch effects.
We are working to improve PRS Jam Amp with preset’s in a future release to simply this. Please use the support form on the PRS Jam Amp Support page to tell us about your experiences with specific guitars and setting so that we can use this information in future updates.
Here is some more information we have found regarding the iPhone input that we will be addressing in future versions of Jam Amp – The iPhone 3G rolls off the input signals below 100 Hz.