Wes,
Sorry, missed the possible addition of the SP-99D. That would add Dolby Digital (5.1), but that's all. It's still quite an improvment over Dolby ProLogic, but I think you could do better even with a newer surround receiver, let alone a newer processor/amp setup.
With M-72 amp, you are still one channel short from having a discrete 5 channel system. You could probably phantom the center, but that's not really a good way to go IMO.
Sorry, missed the possible addition of the SP-99D. That would add Dolby Digital (5.1), but that's all. It's still quite an improvment over Dolby ProLogic, but I think you could do better even with a newer surround receiver, let alone a newer processor/amp setup.
With M-72 amp, you are still one channel short from having a discrete 5 channel system. You could probably phantom the center, but that's not really a good way to go IMO.