I'm pretty sure the Zone 2 output is just a glorified record-out.
Make sure one of the little green LED's is lit around the Zone 2 knob on the front of your c720bee, as the zone function turns itself off when the amp's off, and you need to 'wake it up' by moving that knob, or using the extra little remote they give you.
Make sure one of the little green LED's is lit around the Zone 2 knob on the front of your c720bee, as the zone function turns itself off when the amp's off, and you need to 'wake it up' by moving that knob, or using the extra little remote they give you.