Phase inversion, active speakers and a tortured soul


Running de Havilland Mercury 3 preamp (RCA out) with pleasure into ATC 40 active towers.  Contacted Don Sachs for a new preamp.  Nice response explaining his inverted signal will not work with XLR connection at ATC terminus.  I believe him.  Dead end.  The ATCs stay.

Looking for definitive upgrade and I do not want small 12 designation tubes so many use in this application.  I really enjoy the Type 85 tube Kara uses for its soundstage scale and dynamics.  The Type 85 could do a bit better in the bass region, tighter.  Something quite better than the 12s would be nice.

I also hate the proliferation of cheap volume pots.  The Goldpoint and Khozmo are definitive upgrades.

Thank you for positive suggestions to my truly First World problem of a preamp upgrade.
celtic66
consider that if you have no noise issues, that ..at such a point... single ended would be inherently superior to a single ended design preamp level signal.. converted to balanced... sent down a balanced line, then converted back to single ended again inside the ATC speaker.

That’s three actual distortion creating points, that are avoided (balanced conversion, the balanced cable itself and making the signal single ended again), if you remain in a single ended domain.

Balanced has no fundamentally legitimate (read: superior) place in home audio, it is relevant for killing off noise in studio situations, or in ridiculously long cables in professional situations, like live music.

At home, single ended is just fine, and can be notably better, if well executed (for three basic and real reasons!). There are precious few exceptions to this rule, but it takes a long long time to explain the why of it...

Balanced became a big thing in home audio because of assumption, assumption that if the pros use it, it must be better, right? Manufacturers aren’t going to disagree, when it means sales of new more complex and expensive gear. Hell no.
Hmmmmm, the only thing that should prevent it from working out is a low impedance input on the ATCs, but hey, what do I know?
I have used an Atma-Sphere MP-3 preamp to drive active ATC speakers.

Duke 
dealer