Loren Howard - Fender wrote:
There is no input level control but you can adjust the track volume. Since you're making a digital (amp) to digital (computer) connection, there shouldn't be much signal loss or noise due to raising the volume.
I record in GarageBand with my Mustang II - a couple of tricks I use to get around the input control limitations is enable compression on my guitar tracks (for a bit of a boost) and then check "AutoNormalize" under "Advanced Preferences" when exporting out to iTunes. If you balance everything with the guitar, this setting will make sure the overall mix is boosted to have the peaks (loudest bits) come right in a 0db. Works very well for me.
Loren is right - with the digital to digital link, it's a very quiet connection and you can boost the track volume with a minimum of noise. I used to use the built in amps in GarageBand, but I really like the Mustang tones better - and the stereo tracking is a huge plus!
With all that said, I'd love to be able to adjust the recording level straightaway...