Recently I’m looking at buying a Godin guitar with a Synth output (13 pins DIN type - more details here under the SA access section)
From what I understand Modduo cannot use this as an input (it’s not a Midi input per say), another box has to be put in between, such as the Roland GR-55.
It seems an approach to use a guitar as a guitar synth would be to use a Fishman triple play and set it on any guitar, and plug the usb key in the modduo.
My question would then be: am I right thinking that there’s no advantage from the Godin Guitar to be used a Guitar Synth with the modduo ?
Either you have to add another box (not the goal for me), or you have to use a Fishman Tripe play (which would enable any guitar, without taking advantage of the Godin’s system).
Definitely Fishman triple play, works really well with Mod Duo, plug & play…
edit: …if you mean a Godin nylon string guitar; now that’s different…
the Godin would be your best choice - since the Fishman doesn’t work on nylon strings,
for obvious reasons… 
…and don’t buy the Fishman second hand…
I did, and missed out on half of the wonders of the system…
first buyer gets to download samples & software, no one else… 
But I would not be able to play a Godin like the spectrum in the Modduo I think. I would need an intermediate box, so I’m not too crazy about that path.
But good point on the Nylon strings & triple play… 
thanks !
All the Godin SA guitars are 13 pin so you would need another box, for me (and I have a lot of different ones) the Axon AX100 Mkii is the best 13 pin midi convertor. If you want nylon strings you have to go this way.
Godin also do a TriplePlay range but they are all electrics I think, the nearest to an acoustic would be the Montreal which they do with TriplePlay.
Otherwise get the non SA version and add a triple play pickup to it.
Off-topic but on the subject of guitar-midi I’d strongly recommend checking out the software-only approach from https://www.jamorigin.com/
I was amazed at its tracking speed and accuracy - not perfect, but certainly better than my old GK2.
There’s even an iphone app version which would work for live without a laptop.
Have you tried it as a VST on Linux, maybe?
Hi @leDamien
A bit delayed but hopefully still in time
We own a Godin with the Triple Play at the office and it works impressively well, with the following caveat. The built-in Triple Play from Godin is super neat because it is seamlessly integrated but I today believe that buying a separate Tripe Play makes a better deal. The Godin built-in has a very crappy and short lasting battery and the thing needs energy to run. To make it even worse, it provides a very flimsy micro-USB port for charging and I today need to keep fiddling with the cable in order to have it charged.
The off-the-shelf Triple Play adapts quite well to most guitars and you have the great option to have your guitar back-plate doubling as a fat and long lasting battery.
The Godin is a not a bad guitar per se, but I would be happier selecting a guitar I actually prefer and then adding the Triple Play to it.
Regarding the versions with the GR compatible pickups (the 13 pin) I had one Roland GR Pickup attached to a strat and there are two big problems that made this solution unusable to me:
1 - the GR cable is a nightmare on its own. Needing it on top of your normal guitar cable is a real pain.
2 - the GR-to-MIDI converter I used was a Roland GI-20 and the latency was unacceptable. I tried one of those Roland GR guitar synths (with an built in GR jack) and the problems was the same.
I heard about the Axom that @AndyCap mentioned but never tried it myself.
Those are my 2 cents 
Thanks a lot for all your answers
Got to love the forum 
what a great time to live
For guitar midi interface I use a Ztar.
https://www.starrlabs.com/product-category/ztar-midi-guitar-controllers/
I’ve had it for 10+ years so the newer ones are even more fun.
See http://www.elementalorgy.com/lofi/ for examples I performed (played live on Ztar)