sir hifisponge- i asked him and this is what he said
(First of all, I LOVE your email address!)
I’m very interested in why you are asking me this. Do you know if this spec can possibly relate to how my amplifier actually sounds? Any audio engineer knows that for a open-ended tube amp this spec is almost meaningless due to the interaction of speaker cables, connection resistances and real-world speaker impedance.
I will tell you that the output impedance is LOW (about 10 times lower than conventional tube amps) but not as low as solid state amps that simply sound awful.
The current trend in solid state amplifiers with Ultra Low output impedance is one of the main reasons they all SOUND BAD!! I wonder if someone is tutoring you to ask me such a question?
In other words, if my amp’s output impedance is 1/100 ohm and a typical solid state (piece of garbage) has 1/1,000,000 ohm, which will sound best?? This spec will NOT tell you. J ONLY your ears will!! J
I’d really not concern yourself with trying to make a decision based upon meaningless specs. The reason I’m successful in this field is that I’ve created a completely unique product. It is really incomparable to typical amplifiers. That’s why it has a strong US Patent covering the revolutionary thermionic tube technology. There is simply no comparison to it as far as sound quality. If you love music (which is my absolute passion) and also love the dynamics of lifelike dynamics and sound quality in the cinema (which NO public movie theaters have these days due to the poor quality of their commercial Solid State junk amps), you will simply LOVE the 5150. I’m SURE of it. That’s why many high quality speaker companies use my amplifiers in their test labs for reference (Thiel, Escalante, etc.). The president of one of the most advanced and esoteric (www.pipedreams.com
) is visiting me here in Denver on Friday and has purchased 4 TDB2250s and a set of MONAD amplifiers. Please download and read his white paper. There is NOBODY as critical as Craig Oxford at Pipe Dreams, and he will ONLY use Butler Amplifiers!