Among other things, the manufacturer has not answered the following questions until this day:
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If you measure the damping factor on an amplifier, you usually do this with high output levels. At which operating point was the measurement carried out here (input/output level)?
Does the AHB2 have a series scattering with regard to the damping factor (see following re-measurement (<300), which is below the AHB2 spec):
soundstagenetwork
However, at low levels, most amplifier designs have a damping factor that is 5-10 times lower. Can you provide any DF data regarding different levels?
The internal resistance of an amplifier is also essentially dependent on the circuitry temperature and the load. Do you have any further data on this?
What would the answers look like in bridged mode too?
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