Can one use 2 sets of monoblock amplifiers to one stereo set of speakers?

Don't do it!

@almarg

He’s talking about bi-amping, which wouldn’t be similar to parallel wiring. Though I may be mistaken.

@mzkmxcv, perhaps that is so. But as I mentioned I believe that most Sound Lab speakers run a single electrostatic element full-range, rather than having low frequency and high frequency sections that are separate and independent. If that is so in the OPs case the speakers could not be biamped, of course, and connecting two amps to each speaker would amount to paralleling them. Hopefully the OP will provide further clarification.

Regards,
-- Al

I thought Sound Lab speakers to be one of easier to drive electrostatic speakers. If that is the case, I can't think of why you'd want to use two sets of monoblocks, as I don't think it would yield a significant improvement in sound reproduction.
Just my 2 cents...
B

You may do this IF and only IF the speakers you are driving allow you to separate the two halves.

You may NOT allow the two amplifier's outputs to cross connect.

The reason has to do with feedback. If one amp is off even by 0.1V, they will dump all possible current into arguing over which voltage is correct.

Best,
E