Old review I know but I’m confused as to this 8ohm measurements.
Why does the legend say icepower4 when this is a hypex based amp.
Where is the March p122 like the 4ohm graph?
Am I missing something or did graphs get confused?
You can see on the date ranges at the top of that chart (7/2/2019 9:37... through the day prior to posting the review). Most likely that setup file was selected due to the NAD T578 & 1ET400A being good high/low range comparisons.
Based on the "start date" you can see the legends appear to come from
THIS REVIEW but the actual chart
data is different (and corresponds to the Hypex board which has much better performance than the ICEPower module).
At 8 ohm power naturally drops:
So most likely
@amirm just forgot to adjust the legends but used saved template to save time in running tests. I'm sure he can confirm this however. I can see how it could be confusing or misleading however - I guess no one else noticed until now.
Just like is the case with most Hypex installations (or ICEPower modules for that matter)... you can basically go off the official charts and specifications directly from the manufacturer. Input buffers, custom filters, etc. aside - the final assemblies are within 1% of factory spec usually.