hey i just got my 4000plus from zzsounds its just the 4000 with more memory i think anyways it worked fine when i first got it like 3 days ago butr i think i like changed something or i don't know what i did but i can't hear any of the pads theres notes assigned and everything i can only hear when i sample and when i hit the pads or try and play some songs it it showing the in meter not the out? thats while i am playing not recording? i looked everywhere manual and everything and have no idea whats going on. theres nothign wrong with the hookup or anything... any help would be awesome. im new here and this is my first post. thanks for invitin; me 
