Conversation so far:
What is Amplifiers?
Carlos Santana's distinctive guitar tone is produced by PRS Santana signature guitars plugged into multiple amplifiers.
What do the amplifiers do for Carlos Santana?
Santana compares the tonal qualities of each amplifier to that of a singer producing head/nasal tones, chest tones, and belly tones.
Are there any songs that he uses his amplifiers on?
used at the Woodstock concert as well as during recording Santana's debut album.
Why are the amplifiers important?
CANNOTANSWER.
Are there any other interesting aspects about this article?
A three-way amp switcher is employed on Carlos's pedal board to enable him to switch between amps.
What is a three-way amp switcher?
enable him to switch between amps.

Question: Does he have any other equipment for the amplifiers?
Self-contained rewrite: Does Carlos Santana have equipment other than the pedal board and guitar for the amplifiers?