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I think you want as low an output impedance as you can get

The problem driving single-ended cable is a lack of standards. So the sound of cables is all over the map and the sound changes from one system to another.

You can minimize that with a low output impedance which in turn is driving a low input impedance at the amp.

That means either a large coupling cap, which IMO is inelegant, an output transformer or direct-coupling. Now you know why we did a direct-coupled output in our preamps.

David Berning made a single-ended preamp with a direct-coupled output decades ago called the TF10. If you can find one used it might make a nice platform to work with.

Plan B: put the volume controls inside your amp(s) and remote control them. That eliminates a good number of the problems with passive volume controls.


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  • I think you want as low an output impedance as you can get - Ralph 08:58:26 01/28/25 (0)

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