Hello all, thought I would bump this thread with a quick update and a poll that might spark some discussion.
It has been so busy at work for the last 8 months that I have not had a whole lot of time to listen to my MHMA, keep it at work on my desk. I however last night I stayed late to do some soldering work on a b22 kit so i figured it was only fitting to fire it up and listen while i breathed massive amounts of solder fumes.
I was using my grub dac as the source. First thing I noticed was just terribly week bass and a very, very flat sound stage, perplexed I decided to take the headphones off and let it warm up for awhile as that tends to help.
I put the cans bac on after 10 min or so and tried again. No, good, just sounded very flat and no "body" at all.
After some digging around I found that the wire connections at both the DAC output and amp input looked questionable. I also noticed a melted spot on the DAC output cap closest to the output wires where the iron had hit it and burned into the corner a bit.
After fixing all three of these issues the amp was back to its old self, sounding great! Not sure which "fix" fixed it, don't care, just glad it was simple.
Now for the big question.
Now that this amp has been around awhile, and many have been built, I am wondering if there is a preferred cap set for C7 and C2? I initially built mine with Silmic II's for c2&7, bypassed by wima and VQ respectively.
I swapped the silmics for MUSE some time ago, but I'm thinking of putting the silmics back in place.
I notice Tomb recommends the green bipolar MUSE ES, I have some of these as well.
So, what are you guys using? is there a favorite? is there any kind of consensus on what seems to be the "best"?
I used the black gates years ago on a mini max build, those things were awesome, wish i could get another set :-( .