I can't believe I'm going to say this.

Marantz 5200 with 2 RF receivers. One for zone 1 and the other for zone 2. Use the 2 zone connecting block Z1 from one RF receiver and Z2 from the second. Z2 out of the 2 zone block goes to the universal interface. Z1 goes to the front of the unit.

I did this 2 years ago around this time of year when the ProntoPro came out with the RF extender. Two installs like this worked. I replaced one with a Crestron 1550C since it(ProntoPro) worked but was crap IMO... The other the customer just doesn't want to spend the money and knows it limitations etc.

Dave

Install at your own risk !
Repeat after me: David is not responsible for any lost time, money, brain power, loss of sleep, bandages after hitting head against wall etc.....