Randy Bachman not only has a collection of guitars, but also has amplifiers and recording gear that he has used throughout the years.
When he was much younger he helped to develop an amplifier with his friend “Gar” Garnet Gillies. Randy states that when he was growing up he started by playing violin and he loved the sustaining sound of the instrument. When he switched over to guitar he found that by plugging a small amplifier into a bigger amplifier he could get a sustaining sound.
Bachman experimented with taking the “power out” wires that went to the speaker and plugging them into the input of the larger amp, however found out that continued use of this technique resulted in damage to the larger amplifier. He took his amps to his friend Gar, who owned a radio/TV repair shop and was a musician.
Gar told him what he was doing and was told he was crazy and this could be dangerous. So Gar helped to help him accomplish this in a safer and less destructive way. What resulted was a tube pre-amp which when added to another amp gave the desired sound.
Most of the available amps were Fender amplifiers and the pre-amp just did not sound right with the Fenders. So Gar got some parts from Heathkit and built an amplifier to go along with the pre-amp unit. The resulting amplifer and its sustain feature is the sound heard on American Woman, No Time and other Guess Who songs.
Randy and Gar decided they needed a name to go on the amplifier. Bachman was reading a book at the time that said Herzog across the cover and decided that was the name for the amplifier.
Later on Gar went into business for himself and built amplifiers and cabinets with the name Garnet on their fronts.
from :
https://uniqueguitar.blogspot.com/2015/01/randy-bachman-featured-items-from-his.html