\rHi Neal:AMP300 is a good start. Now the question which Volume Control will work best for you. If you are planning on expanding beyond one or two zones, then Impedance Matching is essential. So you would choose the OVC300 per zone, and you might want to add a Speaker Selector depending on how many zones you determine for your setup. The AMP300 features Speaker A and Speaker B outputs and allows you some flexibility in adding a second pair of speakers in parallel whether you connect to Speaker A only and power two pair of AP650 wired in parallel after the Volume Control. Or you can combine both Speaker A and Speaker B and feature an in-line Volume Control for each pair of AP650 patio speakers. If this is your end game, then I would recommend using one or two of the OVC305R Resister based Outdoor Volume Controls which have no Impedance Matching capability. But have a broader Frequency Response with no High or Low-End roll-off versus a Transformer type VC. It also disconnects completely (no signal) when turned all the way Counterclockwise until it stops at the last click. The OVC300 a transformer style is selected more for the Impedance Matching capability when you are dealing with multiple zones.Please let me know if you need additional assistance with your setup; tim@osdaudio.com\r