Having read the output spec on their transformer incorrectly, never having seen a 2.1 mm power jack used for an AC input and that the amp will also run on six C-Cells: I made an erroneous assumption. (DUH/Old-Timers' Disease)
Have to give Line 6 credit though.
For the cost of one rectifier per unit, they've probably compelled (most) anyone purchasing any of the eleven products in their 9V line and not wanting to buy stock in a battery company, to pay an additional $39.99 for the PX-2G.
SLICK!