Aloha k and IMHO
no your are not wasting your time.
A couple of things to consider tho’:
What you want can be done via the MIDI protocol
but there is not much on how to do it in the GR33 manual.
I know because I checked.
The earlier GR50 did have this capability because it was also
designed to be an outboard sound module. (It was really
a Roland D-110 with a guit controller built in.)
1-The best help I can give someone who knows very lil about MIDI is to:
always make sure the transmitting device (in this case Cubase) and
the receiving device (in this case the GR33) are both set to the same MIDI channel.
2-Limitations:
Once you get the connections happening, remember the GR33 will only produce
two tones at once. But with full 64 note polyphony.
3-Once you get the sounds happening the way you want, just plug
the outputs of the GR33 into the inputs of your audio device.
You can now record that audio stream into Cubase.
A lil MIDI analogy:
When you ‘play’ directly on a guitarsynth or a synth keyboard,
it’s kind of like getting a meal that your mom made for you.
It’s all set and ready to eat.
But with MIDI it’s like your mom had to leave the house
and left you with all the ingredients laying out on the counter
and now you have to put them all together.
What I mean by this is that some of that great GR33 ‘Arpeggiator’
and ‘Harmonizer’ stuff simply will not work via MIDI.
Your options:
You can either wait for mom to get home, or start cookin’.
HTH (hope this helps)
{‘-’}