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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. 
zavato

Showing 1 response by barbapapa

barbapapa
244 posts
 
I had some good tuners in my audiophile life (Naim NAT01, Sequerra Ref) and still have a Tandberg 3001A for sale and a recently acquired Leak Troughline 2 (shipped to London Sound for check restoration and alignment) with De Paravicini stereo decoder, but never a Mac yet.
Sure one day I will have one but hesitate between MR78 and 77. I heard the "77" would be more musical sounding than the "78" model (without mods).  Did someone on the forum comared them ?

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