Recently I picked up this great vintage synth that was in good shape. I noticed that the midi jacks were pushed in and replaced them with new ones for just a few dollars. After playing on this synth, I found that it’s ease to create complex midi sequences was it’s strongest attribute. I felt like if I had some more patches on this unit I would be able to create some awesome songs. After digging on the internet, I found this guy in Poland that took all the expensive expansion boards and recreated them into one module for a very reasonable price. I decided to take a shot and paid through PayPal, sure enough arrived quickly with tracking provided. You can find his link here> MR61 Expansion by Raddek

The installation was super easy and didn’t require any soldering. The expansion pack showed up in the database of patches. This particular card does not have the drum patches. You don’t need them when installing into the keyboard MR61 because they are already in the unit by default.