First of all, the Walker Mod Axiom is built into a much larger case than the old school version, and that gives the newer model a lot more room for expandability. In this case, the Axiom has balanced in out and two balanced outputs, plus a subwoofer out mounted onto the side. The volume pot is much more substantial but is a stepped attenuator. Plugging the Walker into my system using balanced to RCA adapters, the sound is full wide and very live feeling. Back to back with the old version, there is an easy to hear difference...
Glow in the Dark Audio Review of Axiom II with Walker Mod