McCormack DNA-1 Gold or DNA-225

I finally got my DNA-1 monoblocks set up and burning in as I write.
I concur with dyl71, the sound is very clean and holistic.

My only problem is that the Vandy crossover for my 2wq subs only goes to 22K ohms in balanced. I think I need a lower setting. When I get some energy, I'll try them with the RCA cables and RCA xover, which goes down a bit more. This will probably be a new post comparing my experience with Atma-Sphere, McCormack and Ayre.
Re: Synergistic
I recall Pat mentioning how much better the amps would sound using them. I can't remember which one- Red or Blue.
B

When you are talking about replacing the fuses in these amps, (mine is a former DNA-225 which takes 7, I believe) on the circuit board), ...are you referring to replacing these or just the one on the ac input?

7 X $150.00 adds up quickly. I need to call in to Pat. Two years ago, when my last upgrade was performed the fuses recommended then were the Hi-Fi Tuning.

@slaw 
Yes, do call Pat, he can give the best info.
As far as replacing all the fuses, then yes, you should change them all out, if possible. Though even replacing just the AC fuse makes a difference.
The HiFi Tuning were his choice, but I recall this past month he said the Synergistic fuses were the way to go. Again, I can't remember which one.

And, my DNA-1monoblocks are back and running in nicely. -Definitely giving the Atma's a run for the money...
B

I have the DNA-1 with the Gold + Platinum upgrades. Although I have  Stereophile Class A mono block amplifiers that I was using, I am back to the DNA-1. Adding the MicroZOTL MZ2 preamp and using it with the DNA-1 is a killer combination! I have had my DNA since 1994 and upgraded it in 2014 - this heirloom will definitely be passed to my son.