The tube amp uses a cathode, grids, and plate to amplify sound through transferring electrons through a vacuum instead of wires. It was invented in 1904 and was used in radios, guitars, microphones, and bass guitars due to its warm tone. The tube inside is called a pentode, which has a cathode that emits electrons, three grids that channel the electrons to create sound, and a plate that absorbs electrons and contains the heat.

3. The tube amp was invented in1904 by a British scientist named Lee De Forest. Nobody was able to improve on the amp ca

5. This piece of equipment is the receiver for a tube amp, it is used to transfer the sound to the speaker. It uses electrons to transfer sound through a vacuum, to be caught by three suppresser grids. It was used in world war 2 as a radio receiver. The Pentode

6. The Tetrode does the exact same thing as the pentode except it has one less grid which makes it weaker. The Tetrode

9. The cathode has heater so it can emit electrons so it has to be coated with aluminum oxide so it doesn’t burn up in the intense heat. Cathode

10. The grids are made out of graphite, to withstand the high heat. grid

12. Cathode, heater, and grid.

13. The end.