Hi All;

I've just had an inquiry on building a portable sound stage and recording setup.  Traditionally we've always used Exeltech, as they've had the cleanest output, with background buzz on tube amps being lower than grid power.  Modsine were horrible, Old Trace SWs were pretty intolerable, Magnum's were usable, but still noticeably more buzz than grid.  I think THD is roughly associated with the background buzz, but there might be certain harmonics that are particularly problematic.  I haven't gotten into looking at the separate harmonics relative to what induces the most noise in these old vacuum tube circuits.

This is a 48 v application that also needs a built in charger with transfer switching.  Exeltech does not appear to have anything in that department.  Any other choices?  How are Samlex?

As always, thanks in advance for your time and expertise,

--
Ray Walters
Remote Solar
303 505-8760

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