My question is ...  should I get one???   I think I've been doing too much reading and have convinced myself that i need a HPF to protect speakers and improve efficiency etc. My amp doesn't have one and dedicated pedals seem a tad pricey for such an apparently simple thing. When I say pricey I mean they don't come up 2nd hand and are hard to justify when I am not sure if they are going to make an audible difference. What 's your experience been and is it worth the cash and having to carry a