I recently got a GNX2, but no adapter.
I heard that there are replacements, but They're 40.00, and im sure theres some sort of cheaper alternative somewhere.
Any adapters that would work with
9V and 2.1A?

I tried radioshack, but not much help there.
And the closest guitar center is in san bernadino.
Im in barstow. xD
DigiTech PSS3 AC Adapter for (GNX2/GNX3)
output: 9VAC 2.1A; polarity: N/A (AC output). Works With: GNX2; GNX3; BNX3; Genesis 3.

Those are the specs for the Original adapter