I refer only to measurable facts and listening experience
You only have one measurement with questionable results. For the rest you mainly respond to observations made in uncontrolled listening tests.
The last year you cross post the same nonsense about DF in a ton of threads. Every time exactly the same information about that amp with switchable DF, 'the time domain' and a few references to marketing brochures. People have spends days explaining DF to you from different angles. Nevertheless you continue repeating the same story like nothing happened. All of that without any result, your story about DF didn't get any stronger. On the contrary.
So yes, you are trolling and different people already pointed that out. Again, you continue like that didn't happen.
As you can see from another example, the measurement equipment seems to perform very well: Link
They don't document their testing procedure so this link doesn't make us any wiser. I suggest you wait for confirmation of the test results by a second party, or, since you are so passionate about DF, try to manage a test yourselves and document it so others can review the procedure. Anyone with an AHB2, a DVM and a resistor can do an attempt
. A ball park figure would already be a good start since the stereo.de measurements are very far off spec.
Edit: found back a relevant comment from John Siau: https://forum.audiogon.com/posts/1648374
- "The AHB2 has a high damping factor and this allows excellent performance in bridged mono. The damping factor is 350 into 8 Ohms stereo and 175 into 8 Ohms bridged mono."
- "the AHB2 is well suited for bridged mono operation into 4-Ohm nominal impedances and the performance is virtually identical to stereo mode except that the power is nearly 4 X higher. Dips in the speaker impedance curve are not a problem and the AHB2 drives these cleanly."
I would be surprised if the manufacturer of technically one of the best amps in the world, who provides a manual with a list of AP measurements
with the product, published technical articles about damping factor
and is know for performing controlled listening tests completely missed the fact that their amp delivers a sub-par DF with 4 ohm loads.