Can I just purchase this (or something like it) to make the connection, or is there more to the story?
i don't know this box, but if it does what it says on the label, you're good.
may i ask what you intend to pay for that little box?
the components you need to build this circuit yourself will be about 20 cents...
[edit:] ah, i just found their website
. i guess, 15gbp is an ok-ish price if you don't feel like building your own converter right into your mg1. the most expensive component in that box is the plastic case. you could put some sticky magnetic tape on it to magnetically attach it to the metal case of your mg1...
In order to make this work, I need to connect the Microbrute "Pitch Out" to the "Pitch" input on the MG-1, and then the "Gate Out" to the "Trigger", correct?
yep. but for the 'gate out' to 'trigger in' connection, you need the v-trig to s-trig converter described above.
Do I need a converter for both?
no, you don't need a converter for pitch cv. your mg1 uses the same v/oct scale for pitch cv as the brute. afaik, only some vintage korg and yamaha synths like the ms and cs synths used hz/v for pitch cv instead.
but do bear in mind that your brute's pitch cv output has a +1v offset because of the way the pitch wheel is implemented. so playing the lowest note, it won't output 0v, but 1v instead. some people seem to think this is a problem - i can't see why, really.
but if you do think it's a big deal, you could use a cv utility module like doepfer's a138-2
to add a negative offset.
The Microbrute has 1/8" jacks, and the MG-1 (and the box in the picture) have 1/4" jacks. Is there anything to worry about with this difference, or can I just use one of the sleeve converters I already have?
a simple mono converter like this
should do the trick. or you could use an adapter cable