• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

what type is the best?

HI I have a power follower with a IRFP 140 - 15 watt for midhigh in biamp, ( Audio Design Guide - Ciuffoli design) and I have the doubt - not verificable at the moment - if a good 300 B , zero feedback with a good TU Lundhal or Tango ,can sound better, also a little.
What is your experience about this? ;-)
thanks for reading

Paolo,Venezia ITALY ( speakers designer)