IMPORTANT INFO RE: OPAMP ROLLING MINIMAX DAC

(My apologies for the splayed nature of my posts on the Minimax DAC lately; I used a new thread here to get the most attention as I feel there is important new information that potential buyers/Opamp rollers need to see)

The testing and writing up of the Opamp rolling article was a large project and it has been called to my attention that I made an error in my indications of the U1/U2 and U6/U7 locations by color.

I have revised the article to be corrected and I believe once reworked will be accurate. I appreciate Mfsoa's (Audiogon member's moniker)heads up on this.

I also have been made aware by Bill at Morningstar Audio that a thread on the Audio Circles discusses the potential danger of swapping the positions of the Opamps. I will include the thread below. I would not wish for anyone to encounter issues with the unit. It seems as though the most urgent warning is to those who have already modded Minimax DACs, that they do NOT switch the positions of the Opamps. I performed all Opamp rolling on a stock unit. Given this new information I would urge that this warning be heeded by those with modded units.

With this in mind it is all the more clear that one conducts these experiments at their own risk.

If there is concern over experimenting with reversed placement of the Opamps, it should be kept in mind that the favored pairings can be used in their normal locations successfully. Here are a couple more options in which the Opamps are in the proper locations:

U1/U2 OPA827 (dual) and U6/U7 OPA827 (single)
In my notes I had this as one of my "finalists"
The distinction between the absolute best pairings became very small
at the end. This pairing would likely find wide acceptance in many
rigs.

U/1U2 AD8620ARD (dual) and U6/U7 LME4990 (single)
This Analogue Devices chip may be worth checking out with other Opamps
in the U6/U7 position. If I had not been sent the (unavailable currently from Cimmaron) OPA2604 I might have used this combination as my reference.

My apologies for any confusion and much thanks to those well versed in the use of Opamps to help identify potential issues and ensure the article is clear!