X-is updated model.
It should have little more neutral bass.
Original AD700 was basically "Bass? Isn't that fish?" level can with as much bass as in tin can.
Which is great for distinguishing details like foot steps etc in games... but sucks for general gaming immersion.
(strong above neutral bass is always compromise with details)
AKG K701/K702 have neutral bass, which actually reaches respectably low if you listen for it.
Though still average for "fun factor"/general gaming immersion compared to Beyerdynamic DT990.
(have AKG K702, K712, Beyer DT990 and retired tape keeping pieces from falling HGD595 Sennheiser)
In AKGs are lot cheaper than Audio-Technicas in Europe, so you could likely get them for less.
K702 can be found for under 110€ nowadays.
In Finnish PC forum have gotten confirmation of ModMic 5 working well with SBX G6.
Except that in some multiplayer games without normalization others complain about sound being too loud and clear compared to potato microphones of some.
(just attached to Beyerdynamic DT990... and combination beating previous Sennheiser PC373D)