Ecofan amps
Post by Owen Y on May 10, 2018 12:00:54 GMT 12
Pete C knows a bit about (Murray Dick designed) Ecofan amps.
I particularly like the transformer phase-splitter - costly but arguably the best way to do P-Pull, all vintage P-P amps used to be done this way. DarkLantern blog - darklanternforowen.wordpress.com
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Post by michaelw on May 10, 2018 12:17:48 GMT 12
i've never heard any.
they are supposed to be really good ? i can't get past the rustic aesthetics. 
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Administrator
 Post by Owen Y on May 10, 2018 21:27:35 GMT 12
Murray Dick was a knowledgeable valve amp designer who never stopped schooling himself on the subject. Also an all round radio-audio tech, with particular expertise in R2R tape decks (a Revox serviceman in London at one time, he told me).
He was unique in that, not only did he hand-build valve amps, he designed his own circuits - some ideas were derivative, but he liked to come up with his own unique circuits. Furthermore, he wound his own transformers, not just power transformers (relatively easy) but also the audio transformers (output & interstage, not so easy). I have it on good authority that his Ecofan OPTs measure impressively wide bandwidth. I used to (in the late 80s to 90s) regularly listen to a pal's Ecofan phono-preamp & power amp setup (with Sota TT, DV tonearm, Monster Genesis/Highphonics cartridges, Sawafuji panel lspkrs). My pal was pretty discriminating & the Ecofans sounded pretty good to me. That particular phono-preamp interestingly as I recall, used multiple 6DJ8s in parallel to amplify the MCoil cartridge signal. Build quality was 'rugged', no awards for looks & Murray's hard-wire construction was not manicured for MJ-magazine  I never quite managed to own any myself. DarkLantern blog - darklanternforowen.wordpress.com
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