Is it worth replacing an old amp?

Let me first apologize if this question has been asked before, I sure it has. I have an old 5.1 setup, Linn AV 5140 and 5120 speakers along with an old Yamaha DSP-A1 amp. The newest equipment I have is an OPPO 205. All my music is digital, where the vast majority being Hi-Res flac and dsf. The question I have is, would I get a noticeable increase in audio quality if I was to replace the old DSP-A1 with lets say a used Mcintosh MC205 or comparable?