I've read a lot of opinions and I'm quite confused... Some say that if you have a more powerful head than cab, you can burn the cab and others say that if you push the head to the cab's limits, the head will fry. So, should one of them be more powerful or should they both be able to handdle the same amount of watts?? There is one more question for you, is there a device able to count the amount of power (watts) that is being sent to the cabinets??