Personally my definition of neutral or correct is something that sounds accurate to life, not something warmer and not something overly clinical/analytical as neither of those sound closest to life.
I would say your ha2 was closer to something like the g stack than a thx. If you do really want that clinical sound the thx is available, but I think if you want to “hear things as they were intended” the thx don’t offer that as well as something like the Geshelli stack. The thx designs use a feed forward design to achieve such impressive numbers on paper, but it’s generally accepted that this isn’t the best topology approach for natural, accurate to life sound.
Here is a post from a few users demonstrating some of the flaws with thx tech (if you read the thread there is more info there)
If you want to see what I own and use for audio, feel free to check my profile and ask any questions if you want