Switch Matrices

[Shadyman]

Premounted switch matrices... Black, White, Blue, Red, Yellow, Green, Grey, Etc, mounted in 4x4 configuration, with a 0.1" header pinout

http://www.smcelectronics.com/swkey.htm

And a huge macro keyboard...

http://www.smcelectronics.com/emod.htm (Good eye, SmashTV  ;D)

Edit: Thanks, DrBunsen, I blame the clipboard  ;D

[DrBunsen]

Your second link is to the pots page, not a macro keyboard.  I assume you're talking about this one:  (Images are links)

[img width=320 height=240]http://www.smcelectronics.com/EM10.JPG

Nice cabinet:  The top section is slightly C=64 ish

[img width=320 height=240]http://www.smcelectronics.com/WNCABIN06.JPG

Judging by the images, these two go together.

[Shadyman]

Your second link is to the pots page, not a macro keyboard.  I assume you're talking about this one: 

Fixed :)

Judging by the images, these two go together.

Yep.