Hi,
Although I'm not an audiophile, this post might still fit the "budget" part of the sub.
I can buy a pair of active speakers, reasonable size, with standby mode (which is maybe common, I don't know), for cheap.
There are the Audac Ares5A. Targeted at background/music applications: classrooms, meeting rooms, bars, restaurants, retail, etc.
They says it's fine for music, but of course they would say that.
I would use them as desktop pc speakers.
Is it completely idiotic of me? I like buying professional products, it's often very sturdy. The "buy it for life" stuff.
Is it something people do, or am I in effect asking if it's a good idea to buy an 18-wheeler to commute to work?
In general, no, you're not crazy for considering active speakers. In fact, most desktop PC orientated speakers are active.
I think your specific selection is a bit suspect for nearfield audio and definitely for full spectrum listening (the 80hz bottom end of the frequency range will leave you looking for bass if you care at all).
To extrapolate on your metaphor, this is more like buying a farm tractor as a commuter vehicle. Sure it has wheels, an engine, and a steering wheel, but it isn't exactly intended for on road use.
I went with active studio monitors for my desktop PC (Adam Audio T5V and a matching subwoofer) after fighting with interference from various other electronics and the mini amp I was using.
These are amazing speakers, but also quite large. They have standby mode and both xlr and rca inputs. They are wild overkill for what I do with them, but it made me happy.
I would consider their desktop system if I were to do it again to save some space. https://www.adam-audio.com/en/desktop/d3v/
There are dozens of other even cheaper options with great reviews that similarly fit your needs.
save