An oft-overlooked amp powerhouse from the '50s and '60s, the Gibson GA-40 Combo brought in 6V6 power tubes, a dual channel layout, and an offbeat pentode preamp design for a sound wholly distinct from its rivals of the time. Originally sold as the companion piece to the Les Paul Standard, the GA-40's 5879 preamp tube emphasized thick, sustained midrange tone in both the dedicated instrument channel and hotter vocal channel which became the go-to for leads. An absolute classic that sounds nothing like its tweed competitors of the time.
