5Y3 full-wave high-vacuum 8 pin rectifier audio vacuum tube valve

The 5Y3 is a medium-power directly heated full-wave rectifier vacuum tube introduced by RCA in 1935. It has found wide use in tube radios and early guitar amplifiers (of the Fender Champ type). It is virtually identical, electrically, to the older four-pin type 80 tube, but with an octal base. 5Y3G, 5Y3GT, and 5Y3WGTA are variants with essentially the same specification;^[1] the 6087 is similar and a plug-in replacement, but with indirectly heated cathode.

https://en.wikipedia.org/wiki/5Y3

https://www.radiomuseum.org/tubes/tube_5y3.html

A rectifier is an electrical device that converts alternating current (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction. The reverse operation (converting DC to AC) is performed by an inverter.

https://en.wikipedia.org/wiki/Rectifier

Example of rectifier tubes:

1) 5Y3,
2) 5AU4
3) 5DJ4
4) 5V3

Does a rectifier tube really make an amp sound better? (Click on reverb link)

https://reverb.com/news/does-a-tube-rectifier-really-make-an-amp-sound-better