There's a fairly easy way to test their claim. Buy something like the IRP1000:
http://www.isotekcorp.com/dataSheets/dataView.asp?ds=irp&orderURL=It's a power resistor that is capable of handling 400W in free air, and has settable inductive (imaginary) and non-inductive (real) loads. Set them both to around 2.8 ohm (the square root of 8), which would result in an impedance of 4 ohms with a 45 degree phase (half real, half imaginary since impedance equals the square root of resistance squared plus reactance squared).
Hook it up to the Emotiva and see what happens. If it trips, then the Emotiva has problems with a 4 ohm impedance load. If it does not trip, try slowly decreasing the resistance and reactance (non-inductive load) to see where it does trip the amp.
Steve
