There are a small handful of old tubes that need an impressively low voltage to work, though, and [J.G.] has put a few of them to work in this battery-powered audio tube amplifier. The key to the ...

It’s not every day we see the results of someone putting their own spin on a vintage tube ... amplifier, but looked like a plain box. The McIntosh, however, proudly showed off its tubes and ...

Solid-state tube replacements are innovative devices that can act as a substitute for traditional tubes in your guitar amplifier. Unlike their fragile tube counterparts, these replacements utilize ...