McIntosh MR78 upgrades?


I have an MR78 that's working well. 

I can bring it to Audio Classics, and for about a grand, get the power supply and audio section upgraded, and the tuner will be aligned. 

There's another shop, maybe 2 hrs from Audio Classics that does a power supply upgrade for $250, plus an alignment would be billed based on actual time on the bench. So let's say $350-$400. 

Is the audio section upgrade worth $600? Would be most interested to hear from people with Mac tuners that have had them modernized. 
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Showing 1 response by billstevenson

"I heard the "77" would be more musical sounding than the "78" model (without mods).  Did someone on the forum comared them ? "
Back when these were current models I was a salesman and sold both.  The MR78 was hands down the better tuner overall, but if a person did not live in an area with a lot of multipath, the MR77 worked as well, sounded as good, but not better.  The current modded MR78, however, is just better in every way.  I hate to say best, but in my experience it easily is a match for a properly working Sequerra.