$100 to $300

Mesa Boogie 5881 6L6 STR 425 DUET Power Tubes - 750881D

Price: $199.99

Mesa Boogie 5AR4 Rectifier Tube - 750504F

Price: $104.99

Mesa Boogie 6L6 GC STR 448 Duet Amplifier Tubes - 750635D

Price: $154.99

Mesa Boogie 6V6S GTA STR 417 Duet Power Tubes - 750620D

Price: $119.99

Mesa Boogie EL34 STR 446 Duet Amplifier Tubes - 750625D

Price: $154.99