Sunfire's Ultimate Receiver retails for I think $4K. Is this machine that much better than a Rotel 1067 or HK 7300 that it runs about 2x?
No, the Sunfire is not worth the $4000 to my opnion. I audited the receiver and found it not warm and detailed as the NAD and or ARCAM. In fact it was even noiser (with Hiss) than the Yamaha RXV1. If you plan to sprend $4000 I will look into seperate pre amp with amp.