The active life of tube amp In principle, the life of the tube amplifier is semi-permanent. Compared with the crystal amplifier, the relative life of the tube amplifier is determined by the electron tube. The theoretical life of the electron tube is not too long. Generally speaking, it is only a few thousand hours, but good tubes are common for tens of thousands of...

The history of tube amplifier It has been nearly a century since the invention of the electronic tube. Since the late 1950s, due to the appearance of transistors, the territory of the electronic tube has gradually shrunk, and it has been almost forgotten. Due to energy policies, electronic tubes have even been restricted. There is also an exaggerated publicity for transistors, so the tube...

Many friends want to get started with Hi-Fi or home theater. TVs, projectors, speakers, etc. are all easy to handle, but once they reach the amplifier, it is completely a bottleneck. Don’t understand, what is pre-amplifier and post-amplifier? What is a combined amplifier? What's the difference? Is there a difference between home theater and pure Hi-Fi?   What are the application scenarios of the...