We know you've been waiting on pins and needles, and at long last, the gap between announcement and "now shipping" has been closed. IK Multimedia has just revealed that its AmpliTube iRig adapter is shipping, enabling iPod touch, iPad and iPhone users to jack their guitar or bass directly into their iDevice and access all sorts of effects. From there, users can pipe the audio to a pair of headphones or a guitar amp, theoretically allowing your handheld to supplant your mess of pedals. We're also told that the iRig can be used with line level signal sources such as synthesizers, keyboards or mixing consoles, so there's that.