Snubber parts kit for circuits. Used to build a "snubber circuit" to remove unwanted high frequencies and high voltages resulting from output transformer ringing in a guitar amplifier, without the "brick wall" effect of using diodes.

The "Snubber" circuit was published in the "Radiotron Designers Handbook" in the 1930s and is supposed to serve as a "[sonically transparent] shock absorber" to remove unwanted high frequencies and dangerously high voltages resulting from output transformer ringing, without the "brick wall" effect of using diodes. "Output transformer ringing often sounds like unwanted fizz on the notes - especially bass notes."