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From Our Research Team:

Long-lasting EL34 Power Tubes from Groove Tubes!

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-EL34R Power Tubes Duet is a Russian-made pentode that's standard issue on many UK amps and has great durability. These tubes feature a slightly harsher breakup and less high-end clarity than European models, giving them a distinctive combination of classic and modern tonality. Available in pairs.

Specification Detail Manufacturer Part Number GT-EL34-RD-M_113569