Like most of us during what advertisers like to call “this difficult time,” I was compelled to spend a fair amount of it “working” from home. Truth be told, I hadn’t worked so hard in years. My wife ...

Stylish 19-Tube Preamp Ingeniously Lets Users Select Input Tubes For Each Audio Source; Only One in the World to Do So Einstein Audio Components, a leading German designer and manufacturer of premium ...

The circuit was designed to create a line preamplifier by acquiring the use of double triode tubes. The circuit comprises of three parts, the main preamplifier circuit with tubes, the input selector ...

When most people think of tube circuits, the first thing that comes to mind is often the use of high-voltage power supplies. It wasn’t a given for tube circuits, though, as a range of low-voltage ...

If you’ve ever worked with vacuum tubes, you’ll probably have a healthy appreciation for high voltage power supplies. These components require higher potentials to get those electrons moving, or so we ...

Circuit boards etched and drilled. This is a closeup of one side of the microphone PCB board. As you can see it is a little crowded. The copper pipe before work began. Success! The mic head’s windows ...

The three circuits were based on the vacuum tube ECC83 designed to produce phono preamplifiers in compliance with the RIAA standards. Recording Industry Association of America (RIAA) – the trade group ...

Tone King has unveiled the Imperial Preamp, a “high-voltage tri-tube” preamp pedal that takes the tones of the Baltimore, Maryland high-end guitar amp brand’s Imperial MKII combo and repackages them ...

Massive Unity has announced a special 10th-anniversary edition of the TAE Preamp – a powerful preamp unit in a guitar effects pedal, inspired by Brian May's warm valve overdrive. The TAE 10th ...