A few years back, [Gio] decided to try his hand at building a couple of tube amplifiers ... The second amp was built to test the performance differences between Pentode-mode and Ultra-Linear ...

You'Ll Love This Tube Amp Just Like I Do! Linear Tube Audio VeloThe Linear Tube Audio Velo delivers a warm, rich sound that’s hard to resist.#TubeAmp#LTA#HiFi Pope Francis has died at the age of ...

For the electronics enthusiast a tube audio amplifier makes for an interesting ... It follows a so-called ultra-linear circuit, with a tap on the output transformer feeding one of the pentode ...