Part of the popular POD series, the POD HD500 is a floor unit with 27 amp models and over 100 effects. This includes models of a wide range of amps as well as delay, modulation, distortion, compressor, EQs, filters, and reverbs effects. If you don't have the cash to build a world class pedalboard from scratch and keep a room full of classic amps, this will get you 95% of the way there for 1% of the price.