Guild Amplifier Catalog Supplement – ThunderBass & SuperBird Line 1968

Here’s a fantastic Hoboken-era heavyweight: an original 1968 Guild Amplifier Catalog Supplement spotlighting the mighty ThunderBass, SuperBird, Quantum Bass, and the compact Thunder I “Baby Bass” Twin Amp.

Printed in Guild’s bold red-and-black late-’60s style, this foldout lays out full specs—wattage ratings, tube complements, speaker configurations (including JBL options), dimensions, and original accessory listings. It captures Guild’s push into serious stage power during the peak of the high-volume era, when 100–200 watts meant business.

Issued while Guild was operating under Avnet ownership in Hoboken, New Jersey, this supplement dates to 1968, aligning with the introduction and redesign of the ThunderBass and SuperBird series.

There is a 2" tear on the right side of the front cover. Please take a look at the photos to determine condition, let us know if you have any questions and as always, we thank you for stopping by!