tl;dr: So that basically shows it doesn't perform into 2 ohms, which is what I was saying. If you think this amp will perform to the PowerCube for more than 20ms, it probably won't. It's not rated into 2 ohms, and don't plan on using it as such and getting a constant voltage source.
The chart on Interstellar is exactly what I would have expected. 1200AS2 will do the 2 ohm load, but it will
not actually "double down" into it as PowerCube
probably would suggest even for the 1200AS2. In fact, it won't even hit "rated" numbers. Hypothetically, this is a 2x600 (8R) and 2x1200 (4R) amplifier. That's the flashy, published top-line number. Of course, if you read the datasheet, you quickly see that's very misleading. It will only apparently only deliver that for 15 seconds on one channel. It's 600 on two, for 15 seconds. Continuous 270W. Since there is still some crest factor on the Interstellar track, it does basically do what it says. It just doesn't perform to the usual advertised figures. Into 3 it just gives up the ghost in the chart, not increasing output at all, but instead dialing back the voltage. But it wasn't rated into that load, and it's not a surprise.
So, how about that 400A2 datasheet? Supposedly it will sustain the "burst" of 400W for 50S. So there's some reason to believe it will do that, and on demanding content, may delivery to spec. That said, continuously it's rated at only 45W without a heatsink. With one, 55W. More or less, I still wouldn't expect it to perform into 2 ohms. However you look at it, the 200W/400W ratings are a bit fast and loose. They're extremely time limited, but probably long enough to work on most content. On the other hand, my AB amp will sit there just below clipping for about as long as your would like, pounding out 1000W into 2 ohms, and just... not care. These won't. I would have some concern about putting it into a high end home cinema and hitting it with a demanding load that actually needed 400W to drive each channel (such as all full range speakers). Better off racking up the custom install with a bank of Crowns in the gear closet, if you wanted to be safe. I have my doubts about something that collapses from 400W to 50W in a minute, provided that it doesn't outperform the datasheet.
It's really the old NAD Power Envelope concept extended out for a longer period of time, just long enough to pass a bench test and look like something it arguably isn't. It's sensible, but in my book, that's not really "delivering" what you're selling. Instead of lying about power, NAD petitioned to change the rule, without success. ICEPower themselves seem to be honest about the power being "burst" in the datasheets, but those who incorporate the modules often are not. Applied to the Trinnov, that's
potentially a big, fat ASTERISK that appears nowhere in the marketing materials and
might violate the FTC amplifier rule unless the Trinnov in fact performs significantly better than the 400A2 on which it is based. These guys claim "Maximum continuous power with all 16 channels driven is 2800W at 115V." Hey, they said
continuous, not me. I rather doubt it. Who wants to hook this thing up to 16 water heater elements and see how long it takes to melt down, or if it does it?
EDIT: I'm not trying to detract from the fact that's its neat that you can get an amp that puts out 200W/400W into 16 channels, and will do it on most program content. I just don't like the marketing, nor the testing implcation that the amp is "load invariant" when it's probably going to just collapse on much more than a 20ms burst on 2 ohms.