Ex-movie theater projectionist Steve Guttenberg has also worked as a high-end audio salesman, and as a record producer. Steve reviewed audio products for CNET and worked as a freelance writer for ...

[Simon] wrote in to tell us about a headphone tube amp that he just built. It is based on schematics at diyaudioprojects.com that were actually featured on Hackaday in the past. [Simon’s] design adds ...

[Simon] wrote in to tell us about a headphone tube amp that he just built. It is based on schematics at diyaudioprojects.com that were actually featured on Hackaday in the past. [Simon’s] design adds ...

In the first part of this two-part blog post I talked about one of my first “up-close-and-personal” experiences with tube-based audio electronics – a home-built hybrid solid-state/tube electrostatic ...

Japanese designer Koichi Futatsumata, founder of Case-Real studio, has designed a vacuum tube amplifier for electronics manufacturer Elekit. Elekit traditionally manufacture affordable, high-end audio ...

Local musician and tinkerer Jason Harrington is breathing new life into the classic sound of tube amplification. Harrington said his custom tube amps are as unique as each musician who plays through ...

Pi 2 Design the developer behind the 503HTA, Hybrid Tube AMP/DAC is a small Hat size Raspberry Pi add-on has upgraded the design to add new features. It has added an analogue line in the 503HTA can be ...

Looking for a sound card which is a little different? The X-tube USB amplifier is made using a single vacuum tube amplifier which gives it a very unique look and Steampunk style. Paired with DTS ...

Vacuum tube amplifiers just won’t go away. I am speaking more of audio vacuum tube amps than I am of microwave amps like magnetrons, klystrons, TWTs and the like. Most other audio gear is solid state ...

Fig 1. This basic source-follower circuit is the kind of amplifier you would find in an electric bass guitar amplifier. R6 provides the feedback. On the other hand, low-distortion applications require ...

Unison Research’s Unico PRE v2 and DM v2 introduce a modern design, substantially more power, and an $18,498 system price—no streamer, no Bluetooth, just intent.

Probably like most people who learned engineering after the 1970s I was never formally taught anything about vacuum tubes. They'd long since been relegated to the electronics history books. But I had ...