BIG TUBE BASS AMP TONE
One of the highest-output 8-pin pentodes available. Originally manufactured in the United States by G.E.®, it delivers 35 to 50 watts per tube and was original equipment in amps during the '70s and early '80s. A big, clean, tight tube with amazing headroom and performance and great power and dynamics. The highest-output power tube in this family.
This 6550 is slightly easier to push into distortion than the original G.E. version and has a harder response than the "C" for tighter, quicker response. Good for bass amps and metal, when more pronounced note definition is desired with just a touch of distortion.
8-pin pentode design
Duet of GT-6550-R tubes rated from power range 1-10
Each duet is matched and biased to a specific output level
R1-R3 = Low: Early distortion, wide range, softer attack good for Rock and Blues solos.
R4-R7 = Medium: Normal performance, great dynamic range/attack and best all around rating type for all styles of playing
R8-R10 = High: Most dynamic range, most clean power/less break-up for power players, Jazz and bass amps.