So I am working on a personal project and am figuring out that I just don't know where to look for some stuff. I am trying to build a tube amp combo/head with the primary focus being light weight. But I am having trouble finding parts and understanding some specs. I have only built small amps from kits, or direct from schematics. But anyway... So how could you build a pretty loud amp lightly? Where would you shave off weight and still have decent reliability and sound? So first, use toroidal transformers. More expensive but could be worht it. Who do you buy from? Plitron is the only source i know of that even has audio specs. But they use strange impedances. But looking at weights of some hammond transformers, you can shave off up to 10 lbs. Then the chassis. Maybe go to 18 Ga steel? Or what about Aluminum? It is really hard to find those specs. Would 18Ga be strong enough? Would Aluminum be too light? Would Aluminum/Titanium be too expensive? Where do you find this info? Then the wood itself. In a head you are looking for mostly strength. What type of wood would be best? What about carbon fiber, or molded plastic, or completely aluminum? Where can you find weight and manufacturing information? In a combo you have to worry about tone. The speaker is fairly easy, go Neodymium, shave off 10lbs best case. More like 5-7lbs. But the wood or other material? Anyway if someone steals my idea (which based on the Rules, I think it is blown anyway) no big deal. I would probably buy this if it was reasonably priced from someone else. But imagine a 20-100 Watt amp that weighs under say 30 lbs or so and is tube, with great tone. I would buy one.