http://theguitarbuzz.com/software/prs-jam-amp-iphone-itouch-app/

I was roaming the isles at NAMM and came across a demonstration for what quickly became a must-have electric guitar application for my iTouch.

The PRS JAM AMP combines a great-sounding guitar amp simulator, a backing track audio file player and a super-accurate tuner into an all-around first class application that allows me to jam along to backing tracks and slow down riffs and solos for optimal practice — all through my mobile device and the privacy of my headphones.

The PRS JAM AMP lets you load, loop and slow down audio clips for repeated practice of those tricky parts. Upload and play back popular riffs and songs in MP3, ACC (unprotected) or AIIF formats using the onboard web interface.

You can even adjust the tuning of your audio tracks to your guitar. For example, if the backing track was recorded in the key of C#… you can adjust the pitch upward by three tones and play along on your guitar in E!

The amp application includes the standard tone controls as well as input boost, reverb and crunch (overdrive). There is even a slider to adjust for room size.

As far as I am concerned, this is the ultimate iPhone-iTouch application. I can walk around in my house with my Les Paul strapped on and my iTouch in my pocket. The optional (but required)Guitarbud cable that connects my iTouch to my Guitar and headphones is neatly tucked in my back pocket and I am jamming along (walking room-to-room) to a backing track — all the while listening to everything through my headphones.

The best part is…. I am playing LOUD… and my wife hears nothing!

Whether you’re practicing, recording your latest idea, or just killing time, true inspiration and killer tone is finally as close as your iPhone or iTouch.

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.

The guitarist’s interface fuses your instrument with your iPhone – Now the possibilities are as endless as the apps on your phone. With the Guitarbud even the simple Voice Memos™ app (that comes with your phone) can be used to record riffs or songs anywhere – instantly email your track to your friends. All your apps become more powerful – use your iPod tuner in a noisy crowded bar, record your next tune on the 4-track recorder that’s as close as your iPhone.

This powerful, portable guitarist’s interface, is designed specifically for musicians by Bond Music Research in conjuction with PRS Guitars; makers of PRS Signature Series Cables Guitar Cables.

via ->ShadoVVerk.

The guitarist’s interface fuses your instrument with your iPhone. Now the possibilities are as endless as the apps on your phone. With the Guitarbud, even the simple Voice Memos app (that comes with your phone) can be used to record riffs or songs anywhere—instantly email your track to your friends. All your apps become more powerful: Use your iPod tuner in a noisy crowded bar; record your next tune on the 4-track recorder that’s as close as your iPhone.

via PRS Introduces Guitarbud Interface for iPhone and iPod Touch,.