Has anyone directly compared the A30 pro and A90?
Fun fact the opa1656 was a relatively recent opamp that Texas instruments made and it’s a very high spec with low THD.
It was recommended to me by a TI engineer on diyaudio. The A30 uses 10 of these which is super interesting and makes me want to get it over an A90.
I use two of the 1656’s in my HPA-3B (beast), it pictured here with two Chinese oracle ii opamps. I usually run the opa1656 or burson v5i’s. This particular unit was modded with sparkos voltage regulators.
The HPA’s stand out feature is about double the power of a 789 @300/600 ohm. It also has a massive potentiometer and it works excellent with IEMs or hard to drive headphones.
In light of that the A30P really has me interested.
