It's not an omnidirectional extension but rather an entirely new digital active speaker line. I don't think any Axiom customers have them yet.

I should correct my typing above. I didn't mean linear amp but rather linear power supply which offers improved transient response over a switching power supply. By the way, that type of power supply is found on all Axiom subs.

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated