OK here we go,first the schematics
Opamps-- I purchased these (2)
The circuit board is clearly labeled,,and corresponds to the schematics
Remove the opamps and install the new opamps--careful attention to pin #1 orientation,,in the case of the dogs,,pin 1 corresponds with the "b" in browndog.The adcom opamps were marked with a notch of sorts denoting the pin #1.I would suggest installing the DIP 8 sockets, then you have the ability to roll opamps like tubes,if you prefer. Next you want to install 120uf/25 volt electrolytic caps to serve as local power supply reservoirs. the positive lead from the cap goes to pin 8(opamp) and the negative cap lead to pin 4.Then connect the remaining + and - leads on the caps,and tie them to ground.I ran a wire fron the caps which I mounted on the underside of the board to the ground of the power supply,which is easily distinguished.
Digikey # P10270ND
Remove the ferrite inductors at L 500 & L501nand replace with "jumpers",, as they might hide the opamps "flavor" if left in place.
Remove the caps @ C 550 & C 551--nothing goes back there.
I replaced the .1 uf bypass caps(not a requirement) and replaced with Digikey part # P4525ND .1 uf/50 volt stack metal film caps.
On to the power supply--
Remove the two 10uf caps @ C100 & C 104 470uf/35 volt Panasonic Fc caps,,Digikey part # P10301ND
Next replace the two .1uf caps C122 & C 123 with 22uf/25 volt cpas,this will increse the ripple rejection.
Now you are done,, and prepare yourself for some sweet,detailed,and involving analod sounding digital tunes.
There are some film caps in the analog section that are easily identified and labeled,,should not make much of a difference,,but since Sonicap has a sale,,I'll replace them next week,,what the heck.
I give all of the credit to Fred Thompson,who helped me patiently via e-mail,,he answered all of my questions,and made the suggestions,,so,a Big Thank you to Fred,,for without his help,I would not have been able to complete this mod.
Cost--less than 200 dollars(I'm including the sonicaps) which are optional,and would drive the cost down to about 110 dollars.
Here is a link to opamp pin config
Pic 3 shows the new opa's installed.