Despite the oldest solid state audio circuitry now qualifying for a pension and a bus pass where this is being written, the thermionic tube retains a foothold in the world of audio — cherished by ...

Although it was defeated by a vacuum tube and almost no longer used, Germany suddenly adopted it for a V2 rocket and regained its rights, but this time it was defeated by a transistor and was no ...

The circuit was designed to create a power amplifier circuit that will utilize E80CC and EL34 vacuum tubes for better results while providing 35 Watts of power. E80CC – a special quality double triode ...

The artisans of hi-fi, McIntosh Labs, has just unveiled the new MHA200 Vacuum Tube Headphone Amplifier. Made for discerning headphone/home audio enthusiasts, this new amp features a pair of 12AT7 and ...

The Decware SuperZen Triode Model SE84UFO2 is a handmade 2.3 watts/channel tube amplifier that hits much harder than its power rating would suggest. Over the past 23 years, I have had the opportunity ...

The Linear Tube Audio MZ3 has a new challenger for the title of best headphone amplifier below $3,500. During periods of instability, consumers tend to gravitate to brands that they trust. People want ...

This Design Idea is a reprint of an earlier one that contained errors in graphics (Reference 1). Even though 6L6 beam-power tubes have been around for 66 years, they are still quite popular for use in ...