Hi Perry:
Yes you can use 2 SSVC4 but we have recommended going with either our
Powerful High Current AMP200 or AMP300 and running a SSVC4 off each speaker output (A&B). One to speaker A and the other to Speaker B. You can even run two amps and have both amps connecting speaker A and speaker B and use the dual source option selectable per each independent zone. So you connect AMP #1 Speaker A to Source A on first SSVC4, then Speaker B to Source A on the second SSVC4. The second amplifier would connect Speaker A to Source B of the first SSVC4 and then Speaker B to Source B of the second SSVC4. Now you have 8 zones for either the single AMP setup or the two amp dual source setup.
TL/4710