Oh, OK, you’d like to sit further back than when at your desk. Like when the kids have been put to bed, and dad finally gets a chance to relax for a few minutes. Dad’s own little man cave.
I think we’re in luck here. The NRC uses an anechoic chamber to measure, which is considered to be an extremely high quality method. Results can be found here:
Canada NRC Triangle Borea3
Things look pretty good, but your Adams are better. Spending time comparing measurements between the two would be instructive. It will also be interesting to see which ones sound better to your ears in your room.
One thing you’ll have to worry about is whether or not you’re disturbing your spouse or children. If that becomes a problem, headphones might work the best.
If you have the space, you have the building blocks for a dual system. Connect the Boreas to your AVR. You could have one set of speakers at your desk, and the other on stands directed toward your easy chair. Which you put where is up to you. If you’re like most of us, you’ll try one configuration for a while, then change it up for a while, and finally settle on the one you prefer.
BTW, the Boreas are nice looking, and you got them at a great price! They actually measure pretty well, although as I said, the Adams are better. This is a classic tradeoff: form vs function.
If you get subwoofers at some point, you need to know that the sound they produce carries to other rooms the most. So late night listening doesn’t work so good, unless your room is room is super well isolated, or you listen at low volumes. A crossover lets you set the frequency where the subwoofer hands off to the main speaker. Below the crossover frequency, the subwoofer plays. And above the crossover frequency, the main speakers play. The crossover is the traffic cop that keeps things flowing in orderly fashion.
Sometimes a crossover is built into the subwoofer, but not always. When it is, it can be one of the easier ways to integrate a sub into your system. If your sub doesn’t have one, you can use your PC to do it, but then you’ll need two DAC’s per channel, so total of 4 channels for stereo. There are several other ways to get to the same place. If you start poking around on this forum, you’ll find multiple threads where people are discussing the best ways to solve this very problem.