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    Gamut M250i mono blocks vs ???

    Hello David, good to hear about your pursuit of Michael's GamuT M250 upgrades. I am certain you will be excited about the results. I am pairing the modified GamuTs with a Zanden 3000 preamplifier, with such a tube and solid state combination offering, at least to my ears, an excellent balance of...
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    Gamut M250i mono blocks vs ???

    Hello to all, to deliver another praise of Michael at @musiklab and his work over here. Namely, I have recently sent my two GamuT M250 mk3 monoblocks to Michael (which were over 20 years old) for repair as well an upgrade to the latest version of his amplifier modifications. Michael not only...
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    Tube rolling with my Zanden 3000 preamp

    My findings further: the Tung Sol 5687 (I got the original 1950s black plate horseshoe getter version) in the 3000.1 is a game changer. It complements the RFT rectifier tube just perfectly. I do not miss anything in the sound now: and have gained so much (including gain itself). It seems also...
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    Tube rolling with my Zanden 3000 preamp

    Hello to all, I got a hold of some NOS Mullard Blackburn and RFT label 1 EZ81s, alongside Telefunken and Siemens E88CCs and other tubes. The first results: I installed the rectifier Mullards and a Siemens E88CC in the PSU of the 1200.3 and I really like what this did to the sound – much more...
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    Tube rolling with my Zanden 3000 preamp

    You were using this in the Zanden digital gear (Cd transport and DAC)? I suppose the demands are slightly different there to the phono preamplifier or the line preamplifier. What I currently hear is a slight lack of bass articulation, which I hope the new 6CA4 or EZ81 tubes might correct. But...
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    Tube rolling with my Zanden 3000 preamp

    Hello to all, any suggestions what to combine in the power supply of the Zanden 1200mk3? I would be keen to follow the advice for 2x RFT EZ81 (or alternatively, the Mullards, as per others in the chat) – but what would be the best match here for the 6922 which complements the two rectifier tubes...
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    DOEPKE Residual Current Circuit Breaker AUDIO GRADE

    Hi SwissTom, could you perhaps also send a photo of the wiring between the Doepke and the Gigawatts behind the plastic cover? Thanks

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