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In the Forum: Melquiades Amplifier
In the Thread: Single-stage Melquiades vs. DHT amps
Post Subject: DHT, YO186, or???Posted by Paul S on: 10/3/2009
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Not having heard either the 1-stage 6E5P or the YO186 DHT, I can't comment on any comparison of imaging characteristics between any two circuit configurtions involving these tubes/circuits.  All I can do is offer that DHT + good electricity can do fairly convincing imaging, given speakers/room that will allow it.

My first thought was that there may be some unaccounted for (frequency-related) phase shift involved with the 2nd stage. Perhaps, for one reason or another, that channel got inverted?

My next thought was that perhaps there is some frequency-specific loss or gain with the 2d stage.

Either of the above might make imaging weird, as would uneven gain, per side.

In any case, imaging is usually one of the last "qualities" to come and one of the first to go as one optimises a given circuit/system, so it might be anything, even cables, etc.

Best regards,
Pauls

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