Equitech with digital only?

Yes, I got an equitech for the digital and another one for the music system.

It's a miracle.

No idea about Balanced Power Technologies, the main difference seem to be bpt adds additional noise filtering components after the transformer while equitech is a HUGE transformer in a box.

I've had very bad experience with noise filtering on the music line (but before the equitech transformer they work great), so...

With equitech at least, the heavier the transformer, the better, but beyond 90 pounds they are seriously unwieldy...