I did notice that the replacement iRV66 display had the volume bar and spectrum analyzer displays twitching continuously, whereas the original one did respond properly to the audio input, albeit only at high volume.
I'm assuming that their (hack) fix for the audio cut-out, which was likely caused by a low input into the DSP in the first place, was to feed a fixed signal into the DSP control circuitry (or equivalent software hack), so that the DSP/equalizer now thinks that there is a constant audio source and doesn't switch off the pre-amp output.
I do wish they'd fixed it properly since the constantly twitching display is somewhat distracting
2015 Rockwood Signature UltraLite 8281WS
2016 Ford F-250 Lariat CrewCab, 4x4, 6.2L V8