Yes there is a SR & VP 4001. being that hes talking about a proj, i believe he meant the VP. It is a solid entry level Marantz receiver.
Bob, I understand where you're coming from, but if you did a head to head on the Sharp, you would see they are similar but definitely different machines, Marantz puts a lot of time and effort into the product it puts out. It's not just merely a sticker and different box.
Richard - Contact a local Marantz dealer and ask for a demo if you're interested!