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RE: Seriously, Bob, It Sounds Like You Are Quite Knowledgeable...

Well,

Actually I know nothing!!!

But,

I was taken aback somewhat by your backtracking, I guess a bit of a misunderstanding.

I would say everything you have mentioned in your articles, except the one with the lower max voltage rating.

People have to be sure of proper orientation as you have mentioned and that duals only go into dual sockets, and singles in single. Some chips are available in DIP and can be just plugged in. Single dips like 627s can be plugged into dual DIP adapters for the dual positions. Others that are only available in surface mount have to be mounted on a proper adapter. This can be done yourself with the proper adapters. But only if you are good at soldering. I am not!!! Just don't use an arc welder! :) If not, go to someone reliable. You already made an excellent recommendation, Cimarron.


My listening experiences are similar to yours, many combos can sound very good. I can enjoy listing both the tube and SS output with the right (NOS)tube and op-amp combo. I prefer the Burr-Brown op-amps in the duals
which I believe is the I/V Filter position. I also like Burr Browns the in the single, (output) location.

I did not care for the ADs or LMs as much in the dual position. On a very revealing system AD or LMs have very good detail but came across a bit, thinner / brighter. I can listen to the ADs or LMs in the single (output) location. But this is very system dependent. Just seems voiced better to me with Burr-Browns in the dual position. IMO the Burr Browns go up in class 2406 2107 827 627. YMMV... A nice op-amp which I hope to try soon is the ADA4627-1BRZ. Supposedly it is very good. I guess the next step is discreet op-amps that have been mentioned. The Dexxa look like a plan because they can fit under the cover without modification, and do not draw too much current.

regards
Bob

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