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the Heavy-6

the Heavy-6


A Formidable Endgame for the FC660C

Perhaps gravitas is a good term for it: an object that, by sheer virtue of its weight, commands respect and attention. The Heavy-6 is my answer to the inherent density and compact nature of Leopold's beautiful FC660C keyboard. This housing aims, quite simply, to be the ultimate after-market upgrade for that widely esteemed keyboard. With the keyboard installed, the custom CNC-machined Heavy-6 weighs in at over 4 pounds in its all-steel form—dubbed the Monolith—and at over 4 pounds otherwise.

Note: Many finishes are sold out. The remaining few units that are currently for sale are being manufactured in a small bespoke run, to ship around or before October.

Unlike previous versions, this edition includes a wool felt acoustic dampener.

If you're new to my work, check out the kind praise I've won from existing clients.


I'm offering this design in a highly-curated selection of materials and finishes. All versions include a stainless steel backplate for added weight. The Monolith version currently on offer features entirely stainless steel parts with powder coating. All other versions feature an aluminum upper housing and lightly textured powder-coated steel backplate. Each version includes my discreet metal, hand-enameled Portcullis maker's mark on the rear of the case, in a complementary color.

Technical specs

The Heavy-6 is compatible with only the Leopold FC660C (not included) keyboard. It has the same angle between desk and typing surface as the original keyboard itself. The Heavy-6 is Hasu-controller compatible. 

Et alia

This is a DIY kit, keyboard not included, which requires you to remove your FC660C from its stock plastic housing. This may invalidate your keyboard warranty, and by purchasing you agree to take on that project and its results at your own risk. (But, of course, that's also part of the fun.) Assembly is straightforward and I'm here to answer any questions if any questions arise during your install.