I bought an Ox to use as an attenuator a couple of years back, and have never looked back.
I started my guitar journey (before the first Dragon appeared in a now-cult-classic movie), with a Peavey combo. It didn't take long to graduate to a Marshall half stack of 4x12s - it took even less time for me to realize that I could never use it because it was just too much, and that half stack was sold off.
Fast forward (more than) a couple of years, and cue the Ox Box. I bought it so I could run any amp that I want through any cab I want, and it's awesome. Over the years I'd gone from that combo to heads, and started small (Marshall DSL20, Orange 15, Fender Reverb, etc). Eventually, I decided I wanted something "bigger and nicer", so I tracked down a used PRS Dallas 50. Right around that time, a co-worker offered a used, beat up 4x12 from back in the day, and I grabbed and rehab'd it. Suddenly I had the same problem as back when I bought my first 4x12. I did some research, and picked up the Ox Box.
Be forewarned, it has pros and cons though:
Pros: It really does an amazing job of attenuating and keeping the soul of the amp intact. I can dial the amp to where I want, and control volume from the guitar - I love it. The thing it also does, that I completely wasn't expecting (because I knew nothing about it at the time) is act as an awesome component of my recording studio. It also allows me to digitally model different amps, cabs, etc; and acts as a pretty cool interface for a DAW.
Cons: It's really not cheap. Also, and more importantly it can have the added risk of trading in all of the "low / reasonable power" amps for their more glamorous / powerful siblings. This sounds like a joke, but the truth is that I've already added the Dallas 50, a Ceriatone 100 (pretend Dumble), and a Marshall 1959HW will be on its way as soon as COVID stops causing supply chain issues. Next I'll be looking for a bigger Orange, a Bogner...