In our very first podcast, we discuss two must have features in an AV receiver. It's not any fancy streaming service or gimmicky DSP audio processing. We are talking about very useful features that allow for future expandability to extend obsolescence. If you're choosing between two receivers and the one that has these features costs an extra $200 of so, it's critical that you make this additional investment IF you ever plan on expanding your home theater system or wish to maximize the performance of your current system today.