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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. 
128x128zavato
kennythekey
593 posts
 

zavato - I uploaded Richard's test results sheet after his modification of my MR71 if you're interested. It's temporarily added to my system's pictures. I'm sure their are many guys here, and probably yourself as well, who can analyze those results. I thought this might be helpful for you to determine what to expect from the mod.

Kenny

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cleeds
5,970 posts
 
kennythekey
Cerrot - I read a rumor, and I think it was here on Audiogon, that one of the Scandinavian countries has eliminated FM altogether? ... l wonder, if by the time I get my act together with roof/rotor/antenna, will there be a signal!!!
It's not just a rumor - Norway has shut down almost all analog FM. But that's easier to do in a tiny country such as Norway than in a large one such as the U.S. FM radio remains a huge industry in the U.S. and it's not likely to go away anytime soon.
zavato's avatar
zavato OP
1,405 posts
 
Kenny- thanks! Interesting. Wonder how it tested before the mod!

I used to have a magnum dynalab tuner that that went through a factory upgrade at about $800 and I doubt I could hear a difference.

I did discover that one of my panel lights- a "festoon bulb", whatever that is, is out. 
kennythekey
593 posts
 
I found the MR71 on a heap of discarded gear at a used audio joint. I'm not sure if it even tested before the mod.
Kenny
tablejockey
3,922 posts
 
Kennythekey-
The MR71 looks great in that maple case. Is that a Mcab.com custom?

My later model is looking tired and shedding.
I like the look of the base instead of footers also.

Your RM modded 71 must sound amazing. My stock box plays great. It has been refreshed/NOS tubed. I have the RM mod on the wish list. 

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