Sure, the heaters glow as bright as light bulbs, but that’s all part of the charm. Speaking of charm, we just love the amp these tubes went into. Built in 1920s breadboard-style, the features ...

The HTA100’s glowing preamp tubes and signal meters make it the best-looking amp we’ve ever tested, too, but its eye-catching aesthetic may not appeal to everyone. This tiny integrated amp ...

two selectable amps: solid state or tube. The latter of which is the more interesting. That’s right, the Nunchaku houses a pair of Raytheon JAN6418 tubes — which you see glowing through its ...