6L6GC

The 6L6GC is the heavy-duty version of the 6L6 beam power tetrode, originally developed by RCA and later adopted as the defining output tube of American amplifier design. It delivers 30-50W per pair in push-pull with a clean, tight, punchy sound characterized by strong bass, scooped mids, and crisp highs compared to the more midrange-focused EL34. The 6L6GC is the sound of Fender Twin Reverbs, Mesa Boogies, and virtually every American-voiced guitar and hi-fi amplifier. GE, RCA, Sylvania, and Tung-Sol made the most respected NOS versions; current production from various manufacturers is abundant.