Interconnect switching

Over the years I have collected a small collection of audio equipment here. I would like to be able to easily switch a preamp output into multiple amps; i.e, 1:(any)1, or 1:many. Same issue at preamp inputs, right now I have three pre-amps. Ideally a non-blocking crosspoint switch for most flexibility, but can consider restrictions.

Also looking for amp to speaker switching. Right now I have four stereo amps sharing 2 sets of speakers -- though this may grow; most likely speakers first.

Are there products with this range of capabilities?

I found the SONY SB V3000 matrix switcher (6x6 with a 6x2 monitor bus and loops) very effective for line level switching. Bought my first one 20 yrs ago or more. Second one 5 yrs ago.

Here's a link SONY SB V3000

I don't have any ideas for switching amps-to-speakers.
HTH