The POD HD 500 is a pedalboard that puts a huge array of amp models and effects at your fingertips. Controlled by assignable footswitch controls, and an in-built expression pedal, there is an almost infinite combination of pedals available, as well as a 48 second looper, tuning function, and tap tempo. Up to eight effects can run simultaneously, and there are inputs for guitar, XLR and mp3 to play along with. The unit also acts as a computer interface, which is handy for recording at home. The digital modeling allows you to use a realistic version of nearly every type of guitar effect. When combined with the 25 different amp models included, you can get pretty much any sound imaginable.