Go with the Rogue. The Nakamichi is a 30 year old amp and they been out of the Audio business for years. Rogue is only a phone call away if you ever need service!
Rogue Sphinx v Nakamichi PA 5 MMKII and a preamp
I am trying to decide between used items for around the same price A Rogue Sphinx V1 with remote verses a Nak PA 5 MK II and maybe an NAD or Rotel preamp with remote. The integrated would be easy but will it sound better then the separates > Both can drive my big old Infinity's but I am guessing the NAK amp will more current