Digital Signal ProcessorThe DSP amp has digital effects built in.
I recommend against putting metal Switchcraft jacks in there. First, they will not have the auxilliary switching the Fender jacks do. Second, they will not adhere to the original grounding scheme. The real jacks will last a long time if one simply respects them. I have replaced many of them, yes, but think of the thousands of those amps that did NOT need new jacks.The real jacks are easy enough to find.They used to sell them loose, and they had the old part number. Then they started packing them in poly bags with a cardboard peg hole top label, and they got a new part number for that packaging.
Yes, that is a reputable company.See the note about not including the nut? I'm assuming they are getting the parts from Fender's supplier rather than from Fender themselves. That and the fact that the nut is not included means a lower price.