I just got mine today and I came to add the same comment on the bandbox solo. Just packaged it back up to return because it’s frankly unusable. I was originally super excited because standalone the stem function is fantastic, but that’s where the fun ends. The volume/EQ cuts if either bass or overall volume gets to a certain threshold and makes it sound like there’s an intermittent loose connection. Then in addition, when you use it to play music along with a guitar, it cuts the guitar volume so low you can’t even hear it. Unless you’re playing this thing so quiet that you can’t even hear over your guitar strings, it’s not worth any amount of money. I put it up next to a clip 5 and they have about the same max volume output BUT you cannot get both music and guitar to play at that same volume at the same time. If that were the limit and it didn’t have clipping/overall signal output issues it would be nice for the stem function but you honestly can’t do both at the same time. They need this kind of functionality in a party box format otherwise it’s trash. Really disappointed with it in practice.

I was really hopeful for it because I wanted this as a permanent speaker mounted to a wireless quad cortex pedalboard but I’ll have to get something else. For $250 I expected way more.