All amps support wav and mp3, those are just 2 sound formats, one which is a lossless, the other is lossy (i.e compressed). Therefore the question is whether the source will support the mentioned sound formats and if so, many cd players do not support mp3 cd's, therefore you would be at a digital source i.e. pc, or ps3 etc. However if the question is solely about amps, well what is your budget? you can pick up a second hand amp for cheap prices but obviously new amps are a different proposition price wise, so would need to know your budget.