[Marcel]’s amplifier also uses a PY88 tube rectifier instead of semiconductor diodes, making it an entirely silicon-free design. Although [Marcel] hasn’t posted up detailed build instructions ...

Mesa/Boogie is set to continue its current form of reviving cult classic tube amps with the announcement it will be bringing back the hallowed Dual Rectifier. Set to drop January 14, the upcoming ...

four 6L6 power amp tubes, and two 5U4 Rectifier tubes. Naturally, Mesa/Boogie has also fitted the returning amp with some choice upgrades in a bid to make it more attractive to modern players.

The AA5 is a common design for old AM radios that use five tubes: a rectifier, an oscillator/mixer, an IF amplifier, a detector, and a single tube for driving the speaker. [Mikrowave1] took an old ...