Pre out Devialet Expert 120

[Tanad]

One year after I bought my 140 pro I sent it back to the factory to have the pre out installed. It took a couple of weeks and I got my amp back. I don't remember the cost but it was no cheap (around 300 euros perhaps). That must have been in 2018. I suggest you to get in touch with them and ask if they can do the same for you.