Best EL34 amps

Ron Resnick

Site Co-Owner, Administrator
Jan 25, 2015
Beverly Hills, CA
No, I have not heard the Challenger, but for a similar topology I am more comfortable sticking with the MB-185 Mk. III.

Your MB-185 uses EL-34s?

Please describe for us the differences in sound you hear between the triode mode and the tetrode mode.


Active Member
Apr 7, 2014
Canberra Australia
Triode mode on electrostatics is wonderful

obviously tetrode is more powerful, and 'clean'

Triode is more earthy and inmate, with greater image palpability and density, microdymaics and timbre are enhanced

interestingly bass/midbass has more slam, and speed, but less ultimate power, drums more skin and body, as well as pitch

where it gets really interesting is varying the feedback, a great feature!

i listen to classical and jazz, so for rockers i cannot answer to their preferences

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