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Success Rolling Opamps in EE Minimax DAC

I'll try to reign in my nearly unbridled enthusiasm for a recent uber-economical tweak, rolling Opamps in the Eastern Electric Minimax DAC.

On encouragement of Chris and Melissa Owens from Clarity Cable I swapped them out (note; this voids the warranty!), with resounding success. A more powerful upgrade per dollar in decades of messing with systems and tweaks does not come to mind.

My brief instructional discussion on this experience appears at Dagogo.com

http://dagogo.com/View-Article.asp?hArticle=841
douglas_schroeder
hightechredneck
27 posts
 
My other transmission was garbled. I was wondering if anyone had tried the OPA2134 and any opinions regarding it.

The EE DAC's stock power cord is not as open sounding as the others I have on hand but controls sibilance much better that the others.
njs
30 posts
 
I'm with Mfsoa on the OPA2107 opamps for the dual slots on the EE DAC. They get along really well with the LME49710 single opamps described in Doug's review. Perhaps even a tad better than the LME49720 dual described in the same review.

BTW, Doug, how long until you disclose the identities of the custom opamps with which you were so enamored?

Will these be available through commercial sources?
douglas_schroeder OP
3,281 posts
 
Njs, et. al., I'm not trying to hold up the process; the article has been submitted for publication but has to go through a process which takes some time. Yes, these will be available to all and I provide the info to obtain them. :)
meskandar
20 posts
 
Don't know if this is possible due to height limitations but has anyone tried rolling the Burson HD op-amps? They sell a DIP version which I'm guessing would be plug and play? I might have this wrong, but seems like it could be a good combo in theory?
grodri02
3 posts
 
Any update with the article?
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