The warm, rich sound of valve guitar amplifiers

@article{Keeports2017TheWR,
  title={The warm, rich sound of valve guitar amplifiers},
  author={David D. Keeports},
  journal={Physics Education},
  year={2017},
  volume={52}
}
  • D. Keeports
  • Published 9 February 2017
  • Physics
  • Physics Education
Practical solid state diodes and transistors have made glass valve technology nearly obsolete. Nevertheless, valves survive largely because electric guitar players much prefer the sound of valve amplifiers to the sound of transistor amplifiers. This paper discusses the introductory-level physics behind that preference. Overdriving an amplifier adds harmonics to an input sound. While a moderately overdriven valve amplifier produces strong even harmonics that enhance a sound, an overdriven… 

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