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.

The O Turntable marks a bold, if slightly unconventional, entry into the crowded vinyl market from Orange Amplifiers. With its eye-catching design, built-in phono stage, and pre-installed cartridge, ...

A traveling wave tube amplifier operating above 300 GHz based on folded waveguide (FWG) slow-wave structure is presented in this paper. The design and test results of key components are presented, ...