Yes, I use one although I can't be of much help explaining what they do and how they do it, like many others here can. They do improve picture resolution and are worth the money, IMHO. I recently sent mine off to Tube Research Lab for mods ($550) and they brought it to another level altogether; Better focus, better motion, better white level, better sharpness and detail.
Maybe someone can link a web-site that explains in detail the difference between scalers and line doublers/quadruplers? I know I'd like to know more about them.
Maybe someone can link a web-site that explains in detail the difference between scalers and line doublers/quadruplers? I know I'd like to know more about them.