The MESA/Boogie 6L6 GC STR 445 Duet is a 6L6 set that shares some qualities of a 6CA7 in that it has tight, articulate low-end for excellent bass definition along with beautifully balanced mids and a chiming top-end that cuts without harshness. It’s a great choice for the MESA/Boogie Rectifier Series to tighten low-end, add top-end cut in a perfect rock/claw frequency, while avoiding buzz or sizzle in the upper octave.

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