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hagtech wrote:

Ah, think of it this way.  Imagine floating the input to your ET step-ups.  Don't ground it.  Let the primary and phono cartridge float.  This is a similar situation but far far more sensitive.  It's a mind game to make it easier to think of possible problems.  I like to think in extremes.

Yes, I understand it but still, I do not think that speakers would suck noise out of amplifiers secondly as the amplitude of that noise would be too low for a average amplitude that speakers deal with. At least now I have 6 channels and six pair of cables – a lot of wire - and nothing noisy at 109 dB sensitively, even with my Area 51 environment!

I do not know what made me to lift the ground on the secondary - probably the complicity of phase switching at the Super Milq output. Of course it is not complex but it kind of messy (space-wise). Two pair of Super Melquiades has 6 output transformers and each of the transformers’ secondary has two very high sonic qualities really that flips the absolute phase for the given channel. All relays of one amp are paralleled and driven form a separate 12V DC supply with 100KmF filter. The relays are shorted via a separate RCA jack (with the lifted around) behind the Super Melquiades. I have IR sensor that sits on my rack and reads my remote control. This IR sensor feeds a par of cables that feed the RCA jacks behind the Melgs. So, when I hit a button on remote control all six channels flip the phases and a phase indicating light on the Super Melq goes off. It is very friendly, functional and I did not detect any sonic degradation. Well, I would not say that degradation does not exist but rather that “did not detect”. To make that speakers level phase switching was the only option in my disposal (besides going into a balance operation of the Melquiades input stage and making one extra stage) and when I was “listening the relays” I really-really wanted them to be transparent. Still, I do not feel that I introduce any “damage” by placing the relays into the secondary. The 50 years old terminals and bounding posts that I use in my compression drivers are way more devastating contact surfaced then the very high quality sealed gas-filed, golded relays. As you might imagine: if I have any evidence of a single relay screwing Sound then I would not put them into the super Melq….

The caT

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