Once i learned how to use it I enjoy using it. It's extremely confusing when you first get it because it comes with no manual. Once you look at the manual online and mess around with it, then its easy to understand. I used my oscope to set gains on a 2200rms amp and it did just fine. Mine came with a 10x probe so if i wanted to i could measure up to 800volts. So in short, i love using it, its confusing at first but easy to learn, and yes it can do high wattage.