Ted,

Last I looked, the G68AXV has 10 total analog output channels: 4x balanced, and 6x unbalanced. These are configurable, so you can definitely have 4 surround channels using unbalanced connectors without resorting to Y-adapters.

If you want balanced all around, that would be the 861 configured with 2x OA13 cards (each card provides 4x XLR outputs).

Cheers,
- Ken

1. Trinnov Alt32, Meadowlark Semi-custom 4-way Digital mains, Custom 3-Way Digital center, M6, DSP420, HSU VTF2
2. G68D, DSP6000, DSP5kC, DSP420