Changes

Every part of the chain has a significant impact on the tone, and each stage is joined by cables which can also influence the tone. And we could further add components like [[Choosing a Pick|picks]], [[Slide Guitar|slides]], and [[Swells#Specialty Gear|feedback inducers]]; however, those are discussed on their own pages.

When it comes to power amps, there are two kinds. '''Guitar power amps''' are the ones built into complete guitar amps but can also exist as discrete units. In the context of a guitar amp, it may be referred to as ''the power section''. They are designed to have some impact on tone, although not as much as a [[#Pre-Amp|preamp]]. They often use tubes, and may even be designed to be pushed into overdrive, or may at least offer differing tone at different volume levels. '''Pure power amps'' ' or '''FRFR amps''' (full range, flat response) on the other hand, are designed to be as transparent as possible, ''only amplifying '' the input signal with minimal impact otherwise.

In earlier years, these different types of amps rarely crossed paths. Guitar power amps were for guitarsusually built into guitar amps (or those manufacturers would make clearly-designated guitar-centered power amps), and pure power amps were for PA systems. With the introduction of modelers, which that simulate guitar power amps, cabs/speakers, and microphones, pure power amps began to be used by the guitar community for amplification purposes, the same way a mic'ed guitar cab would be amplified through a PA system. Rather And rather than running them into guitar cabs, they'd run into full-range, full-response (FRFR) monitors. Some brands market power amps that bridge the gap, claiming they work for both purposes.