Excellent advice. You can also put yourself on the notification list up at my store (https://store.bpcmusic.com/products/telexo?variant=5637993299999) - you will get an email when I add inventory for sale. No ETA yet; progress update is below.
Quick Progress Update
I’m deep in the build - which is going well. I’ve finished all of the TXo front boards and panels. Here are a bunch all lined up:
I know it seems like this is taking forever - but I’m super-ultra-careful when I build. So far, 100% of the TXo that I’ve built were successful - which is amazing considering how complex the build is. I’ve even added a step to this round where I’m lifting the jacks a hair off the board to further robustify the process. Take a look:
Next up are the back boards.

On the TXi
The number of TXi that I’ve needed to build this round has gone way, way up. I’ve ordered another round of panels - should be here in a few weeks. I’m struggling to source enough of the proper potentiometers, but should have that resolved in a few weeks when some upstream suppliers restock.
On the TXb
You are referring to the TXb and, yes, you can theoretically span boats with them. I’ve done it successfully in a number of configurations. Just make sure to only power one at a time on a bus.
Keep in mind that i2c is rather finicky. You need to be very, very mindful of cable length all around the bus. And you will need to ensure that you use high-quality, stereo cables. Finally, you only want to plug and unplug these cables when your rows and all connected modules are powered down.