Do you have volume control with multiple source simultaneously? I note from one of your comments for this product, you used to have one (SSVC4 and/or SSVC2), but that you went to a "master switch" and thus losing the dual source at the same time (for example source A feeding speakers 1-3 and source B feeding speakers 4-6).
Regarding the following product:
Sale Price: $139.99
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