AUX, Control Room and Studio outputs are all unbalanced 0dBu nominal. Aside from the +4dBu Stereo outputs, yes, all the rest are -10dBV.
Don’t just go by the numbers. Try it out with your gear. The -10dBV outputs, that’s nominal. Max is +18dBV. Between that and maybe your outboard gear has input and output sensitivity/level controls it might work with the -10dBV inputs/outputs. Otherwise it’s getting a bump box like an LA-40…Fostex made them too. There are probably current offerings by Radial, Ebtech, etc.