The Gibson GA-40 Les Paul uses the following tubes: 5879, 12AX7, 6V6GT, 5Y3GT. Find tested NOS and modern-production replacements on TubeDealer.
Each tube position in the Gibson GA-40 Les Paul links to live TubeDealer inventory filtered by that type. Browse NOS, tested-used, and modern-production options from verified sellers with condition notes, test data, and clear pricing.
TubeDealer's Gear Finder covers hundreds of amplifier models with per-position tube charts. Select any tube type to see matching listings, compare brands and grades, and add to your cart — no account required to browse.