I have an original made in Austria K701 from well before the Samsung acquisition, it does have some redeeming features with great soundstage and good "punch" but it is also somewhat harsh and piercing. The HD600/HD650 which it competed against at release are far better tuned, and there's a reason they still get more attention today despite being even older headphones.

I also have "sound by AKG" Samsung Galaxy Buds Pro, Buds 2 and Buds 2 Pro, all of which are absolutely excellent and probably about the best tuned BT TWS in existence (AKG's own N400NC TWS being another contender).

I have a AKG NC700M2 over-ear BT headphone, from after the Samsung acquisition, which is also tuned extremely well, fantastically for a BT over-ear. Samsung probably helped out with the electronic side of this, as that all "just works" as well.

Samsung brought Harman and AKG together and if anything actually significantly improved AKG's ability to tune headphones properly.