If I use my stadium XL with a single powercab 212+, the advantages I receive with the expand D10 are:
- digital signal to cabinet (noise, etc)
- stadium can command the powercab to change cabinet models on a per preset basis
- one aes cable for stereo instead of 2 1/4 or XLR
- does it make it easier to run amp-in-room sound out of speaker but mic'd cab to front of house?
With the added cost of the D10, I'm just curious if this is all I would personally benefit, or am I missing some other advantages?