Best tube amps 2023: Unlock your tone | Guitar World
6L6/6L6GC – another favorite in US amps, which use it to produce fat, resonant mids and sparkly highs. A relative of the KT66, it's a very popular tube used by Fender, Marshall, Mesa/Boogie and many others. EL34 – British in flavor, the EL34 produces wonderful mid-to-high-range projection.