Sovtek EL84M/6BQ5WA Vacuum Tube
A military-spec version of the standard Sovtek EL84, the Sovtek EL84M's extended voltage tolerance, improved plate dissipation and rugged construction make it equivalent to the RCA 7189. Chosen by Matchless for their designs, the EL84M also features higher transconductance, more power, and a longer life than the less expensive EL84, which makes it perfect for hi-end audio applications. However, many musician's prefer the regular EL84's warm distortion to the EL84M's tighter, cleaner tone. For all Hi-Fi users, the EL84M is definitely the vacuum tube of choice.