You will usually give up some convenience like no additional inputs, and most likely polarity control. Polarity can be resolved by inserting an inexpensive XO like dBX or Behringer. Both have individual polarity control for bass, mids, and highes, as well as Left and Right channels. I prefer the Behringer CX3410 because it also has a sub output. Most of the time this is where the polrity is out.
The Raysonic 168 and 228 have an outstanding balanced variable tube outs.
The Raysonic 168 and 228 have an outstanding balanced variable tube outs.