This is Mike at TubeModules.com, and I repair mostly vintage tube amps. While most are Fender, Marshall, Ampeg and the like, I get a few boutique amps and also beautiful, high-end hifi amps full of chrome and large knobs.
I repair, restore and modify based on customer requests. I'll use NOS parts if I have to, but I resist using NOS electrolytics because they don't age gracefully.
I have many happy customers, and most say their amp never sounded so good when I return it to them.
Call me if you have any questions about repairs.