I just recieved my MFA 200D's back from modification by designer/friend Scott Frankland and after trying all the standards he decided on the reissue Gold Lions...the amps use 6 per side and put out 120 watts in Triode.
It is hard for me to just judge the tubes as they are one of several changes made to the amps, but Scott, who obviously knows his amps, went through a step by step process to optimize the amps and these are the tubes he chose.The amps have met and exceeded all of my expectations...very good to great with the changes.
I have used the originals (still have 4 NOS)in a very different design (audiopax) and find similarities in the fullness and richness of the sound...not euphonic or slow sounding.
It is hard for me to just judge the tubes as they are one of several changes made to the amps, but Scott, who obviously knows his amps, went through a step by step process to optimize the amps and these are the tubes he chose.The amps have met and exceeded all of my expectations...very good to great with the changes.
I have used the originals (still have 4 NOS)in a very different design (audiopax) and find similarities in the fullness and richness of the sound...not euphonic or slow sounding.