I've been using the Korg pandora for a few years now as a headphone/practice amp. As an effects processor it is a POS. It sounds alright through headphones, but you'll never be able to use it live for many reasons. It has a pretty cheap feel to it and I've already broken off the battery door, but it is still working. I never use the drum track that are programmed into the thing, but I guess some might find it useful. Most of the time I'm playing along to a CD through the AUX input jack on the Korg. The unit is very portable because of its size. It will run on AAA batteries for a pretty long time.