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Microphone Month
If you were looking for the Groove Tubes GT-5881C Power Tubes (Duet), it is no longer available.

We recommend these great replacements:

Groove Tubes GT-6L6R Russian Power Tubes - Medium Duet Groove Tubes GT-6L6R Russian Power Tubes - Medium Duet
6L6 Power Tubes

Retail Price: $69.99
Save 15% when you buy today!
Sale Price: $59.99
Groove Tubes GT-EL84S Select Power Tubes - Medium Duet Groove Tubes GT-EL84S Select Power Tubes - Medium Duet
EL84 Power Tubes

Retail Price: $59.99
Save 17% when you buy today!
Sale Price: $49.99
Groove Tubes GT-5AR4/GZ34 Rectifier Tube Groove Tubes GT-5AR4/GZ34 Rectifier Tube
Rectifier Tube

Retail Price: $39.99
Save 13% when you buy today!
Sale Price: $34.99
Groove Tubes GT-6V6S Select Power Tubes - Medium Duet Groove Tubes GT-6V6S Select Power Tubes - Medium Duet
High-output 6V6 Power Tubes - Set of 2

Retail Price: $69.99
Save 15% when you buy today!
Sale Price: $59.99

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