PocketGK with iRiffPort is the best bass guitar amp system for practicing with your iTunes music, supporting Pitch Shift and Slow Downer for learningn High Fidelity Digital Audio IOn Builtin iPod music player with instant access to ALL YOUR iTUNES MUSICn Time Stretch and Pitch Shift your iTunes musicn universal full screen supportn plug and play with no configurationn low latency DSP processing, with very short delaynnPocketGK is designed in partnership with GallienKrueger Corporation using GK's renowned voicing filters and intuitive four band active EQ for great, easy to dial in, punchy tone.nnREVIEWS:nnotreble, "I've had three or four different amp modeler practice amps for my iPad, and this one is the easiest to use and sounds the best. I own a GK Mobile Bass amp, and must say that the sound is pretty true to the GK tone."nnThe Bass Geek, "What wins me over in this contest is the better sound for the PocketGK which models the GallienKrueger amp line faithfully."nnProMusicApps, "Given the wide app support for the iRiffPort Digital Audio Guitar Connection, and the high quality sound it produces, this is a must for guitarists working in the app world."nnBlog du mac, "A Marvel to be used without moderation".nnINSTRUMENT ADAPTER IS REQUIRED.niRiffPort on sale now worldwidennFEATURES:n Normal and Boost G.I.V.E. settingsn Contour, Boost, Horn, and Master Amp Controlsn Treble, HiMid, LoMid, and Bass EQn Adjustable Noise Gaten unlimited named presetsn iTunes music play along with Pitch Shift and Slow DownnnSystem Requirements for best performance:n1 iOS 4.3 or latern2 iPad 123, iPhone 44S, or iPod touch 4th generationn3 Guitar Interface iRiffPort or other