Unless I'm an idiot, I was just at Best Buy and realized that in addition to the $70 Pioneer Interface you also need another $70 Sirius tuner to get Sirius to work with the Z110. Is this correct? $140 out of the gate? I had a $75 gift card and was just gonna buy the Interface on a lark for my install and do a 30-day Sirius trial, but I can't really justify $140 in equip even if half is subsidized by a gift card.
Am I correct in thinking I need both of these pieces?