I`m very satisfied with my new mixer, it works exellent on my 2 JBL eon 305 - 8ohm speakers. the voise is clean and powerfull. I had many mixers before but this is the ultimate mixer for my performance. That is why I give it 5 star rating, the Z guitar input is a beautiful feature. and 2 monitor aux channels also great, guys from Yamaha exelent job. Thank you Best regards the rocker