I want to get an iMac to replace my current PC desktop. I have concerns of how how I can connect my external pro audio equipment to the iMac. I have a Yamaha MG 10/2 mixer console which currently accepts input via RCA connectors from my PC's sound card. A pair of studio monitors are connected to my Yamaha mixer. I'm guessing the iMac only has headphone out. Which means I can only use a mini stereo -> RCA adapter. I'm also suspect of the signal quality from the headphone plug. Are there no other alternatives? Thanks.