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Never heard a Motorola mrf455 put down, have heard techs brag on the mrf454.
Never had a problem with any amps with the 455s they have stood the test of time.
I do like Toshiba SRF2290 & was lucky to purchase the last 1970s NOS TX150 Palomar amp from rf parts. Great Clean Sounding audio...
Question; If DEI 2SC2879 transistors are so bad then why would Texas Star have them in their amplifiers? Isn't this like comparing Chevrolet to Cadillacs?
Here is a pic of the inside of my Megawatt S-700-12 I bought it directly from John Marles who builds them in California.
He added his new Quiet fan circuitry to this one. I own 4 of these & have 2 of them stacked for 100 amps. Nice Units.
Probably Noisy!? I only use Megawatt S-700-12 series power supplies. They are reliable, Clean, Stackable & work as advertised. USA Customer Service is Excellent.
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