L20SE help to add overcurrent protection ?

Hi. I wonder if knowledge and support is out there to help with building in some active protection into the L20 SE design?

I have added relay protection which would protect the speakers but I’d also like to protect the amplifier from the speakers (quad electrostatics).
These speakers will put an effective near short across the speaker outputs of the connected amp I believe. Quad amps such as 306/606/405 take this in their stride and this is what I’d like to build into these little wonders as I’m loving the sound and low noise level.
Maybe LJM can help or others with some ideas to detect and reduce the current to the output transistors in overcurrent conditions fast enough to protect the outputs.