It was with considerable interest last month that I set out to track down where in the world there are still factories making tubes. My research found them in Slovakia, Russia, and China, and it&#8… ...

There are few greater follies in the world of electronics than that of an electronic engineering student who has just discovered the world of hi-fi audio. I was once that electronic engineering stu… ...

The amplifier offers the means of magnifying varying electro-motive forces and currents, otherwise imperceptible, so that they come within the range of ordinary laboratory measuring and recording ...

Copland’s CTA407 is a fuss-free valve amplifier. It is well made, decently equipped and sounds lovely ...

Analogue valve amplifiers, which are set using a screwdriver, are still justified today in some applications to facilitate the commissioning, fault diagnosis and maintenance of proportional valves ...

Normally a valve amp leaves its components exposed to aid cooling of the hot vacuum tubes, but Futatsumata’s design encases everything in a smooth metal heat-sink — even the dials are aluminum ...

Martin Young of IMS Electronics has launched a hybrid tube amp on Kickstarter that's undoubtedly something of a looker. But the Desktop Valve Amplifier – housed in an enclosure machined from a ...

Old-style valve amplifiers are the real ale of the technology world. Both are handcrafted lovingly in rural backwaters of Britain, and both have a long-standing tendency to attract middle-aged men ...

In addition, valve amps give musicians more options - thanks to the physics of how valves work. If you overdrive push a little, only the top of the sound wave is flattened.

Tube amp stories are always popular on Gadget Master, and this one certainly looks the part, a Desktop Valve Amplifier for hi-res music lovers.

Since the Mal Valve is one of the rare headphone amplifiers that can drive electrostatic and dynamic headphones, I also auditioned the sound with a pair of Stax SR 007 electrostatics.