The Dynaco ST-70 is one of the most popular tube amplifiers ever. First released in 1959, it's still sought after by hi-fi enthusiasts today.

Zappa put two distinct setups to the test to see if listeners could truly tell the difference between tube amps and their digital counterparts ...

We present the experimental demonstration of a traveling-wave tube (TWT) power amplifier operating in the W-band (75-110 GHz) frequency range. The device is based on a serpentine waveguide (SWG) ...

A novel planar slow wave structure (SWS) for traveling wave tube (TWT) is proposed. The major advantage of the planar architecture is its easy realization with respect to the typical 3-D SWSs. The ...

The 6080 double triode is driven by the ever popular ECC88 (so plenty available for tube rolling) in a cascode configuration. In demonstration experiments with both valve and solid state amplifiers, ...