Tung-Sol 5881 (6L6WGB)

Tung-Sol 5881 Brown Base – Vintage USA Power Tube The Tung-Sol 5881 brown base is a rugged American-made power tube from the golden era of U.S. production. Originally built for military and industrial use, the 5881 is a durable member of the 6L6 family known for its reliability, long life, and strong, balanced tone. Tonally, the brown base Tung-Sol 5881 is warm, powerful, and dynamic. It delivers solid low-end weight, rich mids, and a smooth but controlled top end. These tubes respond well to playing dynamics and maintain clarity even when pushed. Built to run hard, they’re known to last thousands of hours while holding their operating stability. In its class, the brown base 5881 is rarely matched in durability and musical response. We Match for Free All Tung-Sol 5881s are fully tested and professionally matched at no extra cost. Every tube is: Tested for emission and mutual conductance Screened for shorts and proper operating function Verified for noise and stability Matched