Guitar & Bass Amplifier & Effect Accessories

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  • Mesa/Boogie SPAX7 Preamp Vacuum Tube
    Item # AM190
    | Mfg # 750151F
    | UPC # 809404091917
    MESA SPAX7 preamp tubes are a super-premium grade substitute for any 12AX7 positions - They are a "Special Requirement Preamp Tube" that possess an even higher standard of overall performance, due to their incredibly low sensitivity to microphonic noise - This is the ultimate preamp tube to use in all critical gain stage positions - It is the absolute best of the best!
  • Groove Tubes GT-12AX7 Guitar Amplifier Tube
    Item # AM029
    | Mfg # 5550113208
    | UPC # 736021438149
    (aka: ECC83, 7025) The standard preamp tube replacement.
    $19.99 | SAVE 20%
  • The MESA 5881 STR-425 is a military grade 6L6 that was designed with an emphasis on rugged durability and consistency, capable of handling high voltage requirements - It produces a thick, rich tone with tapered highs that lends itself to styles of jazz, fusion, some blues or any style where tapered highs and a full round tone are desired.
  • Mesa/Boogie 6L6 STR-440 Duet (matched pair) Premium Grade Vacuum Tubes
    Item # AM185440
    | Mfg # 750618D
    | UPC # 809404063846
    The MESA 6L6 STR-440 is our very best overall 6L6 - It is a premium grade, US equivalent and our tube of choice in the production of all new Mesa 6L6 powered models - Remarkable bass definition, articulate mids and shimmering highs keep every note amazingly intelligible, with a smooth, creamy character - Premium structural quality provides exceptional consistency and reliability - Rivals NOS (New Old Stock) durability and sonic character - Amazin...
    ONLY 9 IN STOCK, USUALLY SHIPS IN 3 DAYS
  • Mesa/Boogie EL-84 / 6BQ5 Russian Premium Grade Vacuum Tubes, Matched Pair
    Item # AM188
    | Mfg # 750604D
    | UPC # 809404084056
    The MESA EL-84 / 6BQ5 is the little brother to the EL-34 and is the classic European designed tube that lead the British invasion - Our EL-84 is tight and aggressive, yet smooth and warm, with an amazing chiming mid and top end - Brilliant focus with a frequency response that always brings your guitar to the front of the mix - This tube is true to its classic roots and is extremely consistent and reliable.
    ONLY 6 IN STOCK
  • Groove Tube 6L6 Gold Series Single Tube, Medium Power Range (4-7)
    Item # AM138CHPM
    | Mfg # 5550113677
    | UPC # 736021122628
    A medium-output power tube (generally 20-25 watts) often used in Fender professional amplifiers including the Bassman®, Bandmaster®, Concert, Dual Showman®, Hot Rod Series, Pro Series, Super Reverb®, Tremolux™, Twin, Vibrolux, Super-Sonic™, Blues Deluxe™, Blues DeVille™ and others. Available in many variations, its response is round, with a pronounced midrange character; strident and chesty with a super-bri...
    $29.99 | SAVE 14%
    ONLY 4 IN STOCK
  • Mesa/Boogie 5Y3 Rectifier Tube, Premium Grade Vacuum Tube
    Item # AM763
    | Mfg # 750770F
    | UPC # 809404068896
    The MESA 5Y3 is a true, authentic 5Y3 NOS (New Old Stock) equivalent modeled after the original Phillips 5Y3 and is built to our exacting specification for use in our Lone Star Special - This tube produces a sultry vintage sag, creating a silky, smooth feel on the strings and provides the most sag of all of our rectifier tubes.
    ONLY 4 IN STOCK
  • Groove Tubes 12AX7C Preamp Guitar Amplifier Tube
    Item # AM029C
    | Mfg # 5550112398
    | UPC # 736021123984
    Great for Marshalls and Fenders. Sweet warm mid range tone, complements tone of European amps.
    $19.99 | SAVE 20%
    ONLY 3 IN STOCK, USUALLY SHIPS IN 3 DAYS
  • Mesa/Boogie 5U4G Rectifier Tube, 750540F
    Item # AM793
    | Mfg # 750540F
    | UPC # 809404029095
    The MESA 5U4G rectifier tube is a classic 1930's "Coke Bottle" design - It produces a flexible, elastic feel that is a bit more controlled and slightly less "saggy" than our new 5U4GB - It has a nice spongy feel but has moderate life expectancy and reliability compared to our new 5U4GB - Due to its tall "Coke Bottle" design, this tube may not fit in all amplifiers - Please confirm the height between the amp chassis and the cabinet before choosing...
    ONLY 3 IN STOCK
  • The MESA EL-34 STR-447 is our very best overall EL-34 - It is a premium grade, NOS (New Old Stock) equivalent and our tube of choice in the production of all new Mesa EL-34 powered models - It has a traditional EL-34 tone & feel that is very urgent and aggressive and is an excellent choice for all styles of gain, especially classic rock, alternative rock & metal - This tube is true to the crown with focused low end, crushing mid range cru...
    ONLY 3 IN STOCK, USUALLY SHIPS IN 3 DAYS
  • Groove Tube 6L6 Gold Series Duet Tubes, Medium Power Range (4-7)
    Item # AM138CHPDM
    | Mfg # 5550113497
    | UPC # 736021128293
    A medium-output power tube (generally 20-25 watts) often used in Fender professional amplifiers including the Bassman®, Bandmaster®, Concert, Dual Showman®, Hot Rod Series, Pro Series, Super Reverb®, Tremolux™, Twin, Vibrolux, Super-Sonic™, Blues Deluxe™, Blues DeVille™ and others. Available in many variations, its response is round, with a pronounced midrange character; strident and chesty with a super-bri...
    $59.99 | SAVE 14%
    ONLY 2 IN STOCK, USUALLY SHIPS IN 3 DAYS
  • Groove Tubes 6l6 Power Duet Gold Slovakian High 8-10 Amp Tube
    Item # AM138D5
    | Mfg # GT6L6CHPD112884
    | UPC # 736021128842
    EXCLUSIVE GT design.The heat wings attached to the plate give our version of the original EL34 15-20 percent more power. Interchanges in any EL34 application and stays tight and robust all the way up to full power. Highly dynamic, big low end and runs cooler for longer life. Amazing headroom, killer tone and all of the great features and characteristics of the EL34 design. 
    $59.99 | SAVE 14%
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