# Casio SK-1 with Highly_Liquid Midi Mod
“Up for auction here is a Casio SK-1 with a custom midi retrofit from Highly_Liquid. I commissioned Highly_Liquid to build out this mod for me a couple of years back for a project I was working on. More often than not, adding the midi retrofit to a Casio means removing the speaker to make way for the additional board, but in this case I had an external breakout box built so that all of the original characteristics and functionality of the unit remained in tact. The unit is in excellent condition with no battery leakage residue in the battery compartment. As a bonus, I’ll include a CDr that contains a cassette rip of the original tape that came with the SK-1 that includes demonstrations, tips and samples for using with the keyboards sampler. This will be a great addition for anyone working on chiptune, 8 bit or low-fi projects.” Link