Tbg, my previous generation Contrivas came with plain spikes that I'm still using in combination with the Harmonix tuning feet to my full satisfaction, I'm happy to say. I do believe, meanwhile, Tidals come with their weight optimized proprietary steel isolator feet, as a regular customary accessory that is (the shiny cylindric feet you can see on some photographs on the website). So I wonder, are these the ones the US distributor actually sold optionally or yet something else?