Audiolab 8000A and 8000S

I appreciate the advice and think it makes good sense . I have decided to set it up as suggested - bi-amping with the 8000S as an integrated , and the 8000A as the power amp . If anyone knows the specifics of seperating the pre and power stages please let me know.
I will keep you posted on my progress.
Thanks .

I contacted Tag McLaren who were very helpful and provided instructions for modifying the 8000A. This involved moving some links on the circuit board,simple enough really. I set up the amps as advised by Seandtaylor99 and the results have been truly excellent . The bass is far meatier and the overall sound is just so much fuller and punchier. Thanks to all who replied.

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.