With the wealth of cheap and highly integrated audio amplifier modules on the market today, it takes a special dedication to roll your own from parts ... your tube-making game gets a lot harder.

Looking at the tubes available, it’s clear that if you are searching for an obscure 1050s small-signal RF tube you’ll be out of luck; these are mostly audio amplifier parts, double triodes ...

Well, the Waza Tube Amp Expander Core allows you to run your ... Assist feature to apply one of sound contour curves to their parts, with a variable transient control to make sure these parts ...