Tony

I opted to get the improved controls and extension to have more length.
http://www.ebay.com/itm/SummitLink-Logitech-Z-2300-Computer-Speaker-Replacement-Control-Pod-Wired/132123370292?_trksid=p2385738.c100677.m4598&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20160908110712%26meid%3D420ad936160c45dba9794d7d8c660d39%26pid%3D100677%26rk%3D6%26rkt%3D20%26sd%3D25286214050

This isn't mandatory however. I used a double RCA to 1/4 in adapter, and plugged into the back sub slot of the SSv3.