Audiolab 8000A and 8000S

What are you trying to achieve ?
Do you want to bi-amp your speakers (i.e. use one integrated to drive the tweeters and the other to drive woofers ?)
Or do you have some other goal ?
With a bit more info I might be able to offer some help.

The 8000A has pre out and power in jacks and can be used as a pre or a power amp. To be used as a preamp, simply connect to a power amp. The pre and power sections are connected internally. To be used as a power amp, this connection needs to be removed. With this done, the pre and power sections can operate independantly.

I was not planning to bi-amp the speakers, but just to use the preamp as the source control and the power amp to drive the speakers .Do you recommend bi-amping ?
Nutella - How complicated a mod is removing the pre and power connection?
The 8000S also has pre out and power in jacks. A switch on the front panel allows it to be put into integrated , pre or 'pre-power AV' modes.The pre mode inactivates the internal link, the speakers and the power amp input.
The pre-power AV mode inactivates the internal pre/power link , but leaves the power in, preamp out and speakers active. To use as a power amp , does it matter whether the pre-amp outputs are still operational or not? If not , merely turning the switch would allow the 8000S to function as the power amp . Can the 8000A then be used as a preamp without removing any connectors?

Thank you for your responses.

I was paraphrasing the audiolab owner's manual. I have not performed the mod on my old unit. The manual does use the words "simple modification". If you feel confident in looking inside, you may be able to see for yourself if you can do it yourself. Otherwies, take it to an electronics repair shop and tell them what you need done. It should only cost their minimum charge. If you do choose to look inside yourself, remember that even if the unit is unplugged, there may still be enough voltage in the circuits to cause injury. Leave it unplugged for a while before you do anything.