There is this new AVB soundgrid thing from Waves (https://www.waves.com/hardware/soundgrid-br1), but this is a solution for Waves plug-ins only. This is the only AVB solution on the market, so you will have to live with Studio One as plug-in host. Which is not a "bad" thing, not at all, because you can use DAW Mode and delegate a lot of control to the StudioLive mixer. If I remember it right, you are using a SL 16, which (fortunately) has the Fat Channel/DAW Mode scribble strips, buttons and encoders.
Here is an example how to use DAW Mode for third-party plug-ins:
In Studio One you would insert your "smart:EQ live" plug-in to track 1, which receives audio from channel 1 of the SL 16 and sends the processed audio back to channel 1. Then you press the DAW Mode button. The mixer automatically switches to the User layer, which is the standard mix bus of Studio One. Select track 1 (should be selected already) and look at the touchscreen. You will see "smart:EQ live" listed under Inserts. Touch/highlight "smart:EQ live", the plug-in will now show up on your computer screen.
Each plug-in has a yellow "UCNET REMOTE" marker with a wheel left of it. Click on the wheel and find "UCNET Remote" under Handling Options (Bedienelement). Just click on the right arrow/triangle. Select "UCNET Remote", the UCNET console will show up. It would take a long time to explain what this console does, so the only thing to add here is that this console allows you to delegate functions of the plug-in to the DAW Mode scribble strips, buttons and enocders. The Studio One plug-ins have this "delegation" already, for any other plug-in this has to be made from scratch. Settings can be stored and are recalled anytime the plug-in is used.
What this does is simple: You SEE the plug-in on the computer screen and you have full and real time visual control over everything changed on the mixer. This workflow might look somehow complicated, but it is not. Once things are set and stored, it's totally easy in a live mix to switch to DAW Mode, change some settings in a track (plug-in) and switch back to the live mix again. I have done this quite often and I have to say that it really is fun. It works phantastic. But it might be quite some work at the beginning.
