This reminds us that hi-fi is more about behavioural psychology than, say, the divisive and entirely false dichotomy of “100% ...

Abstract: Electric circuits containing vacuum tubes form an integral part of various audio equipment, such as guitar amplifiers, certain equalizers, microphone preamplifiers, and dynamic range ...

Abstract: D-band high speed communication applications require an amplifier with broad bandwidth and high power. The vacuum high-power amplifiers, however, exhibit a limitation in bandwidth, while ...