I wonder how the darbee darblet differs from what is offered in the oppo player, must be pretty different as those with the oppo don't seem impressed with it. The OP asked about the darblet though, so I think it's worth a try on a projector. It's easy enough to add into the mix, and remove if you don't like it, just connect it to the monitor out on the receiver so the processing can be applied to all the sources.