There are plenty of tube amplifiers now being manufactured, with a popular choice being headphone amplifiers that use a tube as a gain stage followed by an op-amp as a buffer with a low impedance ...

Steve Morse is also a fan, but he’s conceded there is one thing ... For that reason, while Morse owns a Kemper, he’s sticking ...

For the electronics enthusiast a tube audio amplifier makes for an interesting and unusual project, and for that reason it’s one tackled by many. [Keri Szafir] is no exception, and she’s ...

But while tube amps are still a key part of his live rig ... so it’s understandable that gear-obsessed fans saw a lack of amps on The Sphere’s stage and made the assumption.