I post this only because the Search function is down. Can anyone give an opinion on the Sony MOD-RF1 AC-3 Demodulator? Is it any better/worse than the Yamaha APD-1 or the Kenwood 9991D? It is pretty much impossible to get the (preferred) Pioneer RFD-1. I am not concerned with the available inputs/outputs, just the performance of the demodulator. Thanks!