Need to source one of these dual dimmer switches

[FasterFreddy]

It's controlling two separate transformers, each driving several 12V halogens.

I've done a fair bit of searching but can't find this type of dual dimmer anywhere. Are they not made any more?

What other options are there which will be a direct replacement to this one?

[Plotloss]

MK Logic Plus Intelligent Dimmers will dim MR16 loads.