Groove Tubes GT-6L6-S Medium Quartet (Quad) Tubes three chrome latches Focus mode allows users to

Focus mode allows users to ‘hone in’ on problem frequencies or specific frequencies they want to accentuate or attenuate

yet more flexible than ever thanks the Link fastening system and the paired handle

and the two-way speaker system features a newly designed 12-inch custom woofer for improved sound quality

triple block inlays

Crafted using Yamaha’s exclusive Acoustic Design process

Groove Tubes GT-6L6-S Medium Quartet (Quad) Tubes three chrome latches Focus mode allows users toThe Groove Tubes GT 6L6 S Medium Output Quartet Power Tubes with generally 20 25 watts outputs often used in Groove Tubes 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 smooth, with a pronounced midrange character; strident and chesty with a super