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From Our Research Team:

A "Short Bottle" 5881 that Sounds Incredibly Sweet!

Note: all of the Groove Tubes tubes and sets we carry are "Mediums," or in the 4 to 7 range. Tubes are non-returnable.

Groove Tubes has been manufacturing, importing, and grading quality power tubes for two decades. No stranger to Sweetwater, Groove Tubes founder and energy source Aspen Pittman has paid us numerous informative (and always entertaining) visits through the years. His tireless pursuit of perfect tube tone has resulted in Groove Tubes' reputation for consistency and premium quality. Want proof? Fender tube amps now include Groove Tubes as standard equipment, and true tube aficianados worldwide swear by the tubes and pro audio products Groove Tubes makes. For premium tube tone, choose Groove Tubes!

The GT-5881C Power Tubes Duet features a Groove Tubes exclusive high-power 5881 "short bottle" design. This is a very high-vacuum tube, the GT-5881C is very stable. This tube type gives you a sweet tone and defined character that was a mainstay in the Fender tweed era amps of the 1950s and early 1960s. The tube's short height allows for easy use in rackmount-style amps. Available in pairs.

Specification Detail Manufacturer Part Number GT-5881-CD-M_113487