When I unboxed this second pair, I thought the "tiny" size of the satellites might be a drawback for presenting a "true" sound stage (as a friend of mine puts it). Personally, recording and mixing with a subwoofer doesn't really "do it" for me, because the frequencies are very spread out and, if the system is not perfectly balanced, it can quite easily lead to confusion, especially for someone who is not an expert. On the other hand, subwoofers are sometimes very "theatrical." What I mean is that they inflate the sonic spectrum disproportionately. Dangerously so, since this tends to be appealing to the ear, and therefore addictive, but misleading.

As Roger Montejano rightly told us in one of his ISP reviews, many manufacturers tend to design a product that makes you fall in love with it, boosting the highs and lows to achieve a more spectacular sound. What we need when mixing is reliability. Working comfortably, yes, but without getting carried away by the thrill of boosted frequencies that will later be missing (or show up unexpectedly) on most listeners' systems.

Getting to the point: we hook up the Blue Skys
The satellites are so small and light because the amplifier is inside the sub. I think that's an entirely sensible idea. Personally, I don't need bulky contraptions "pimping out" my studio. On the contrary, I want little bulk and little clutter, but with quality: the good stuff.

In addition, all the cabling (except, of course, the feeds to the satellites) goes to the subwoofer, which also makes the setup more discreet and attractive, avoiding cables in the upper area.

To be specific: we have two 55 W side cabinets with a 4" driver and a 1" tweeter. The subwoofer, however, has 65 W of power.

Notable features
The satellites are superbly suited to being placed and aimed in many different ways. The upper cabinets come ready to be mounted on stands or placed flat on a surface, and even slightly raised thanks to a wheel that lets us change their tilt.

The subwoofer, as I mentioned above, is the system's central unit. On it we find the balanced XLR outputs, the unbalanced RCA outputs, the 2.1 or 5.1 mode switches, attenuators, gain, etc.

Conclusions

I would be very brief in describing this system. I especially liked its precision. It is crystal clear and very well defined. Not a single detail of the mix is lost when working with the Blue Sky 2.1 Monitoring System. The resolution of the low frequencies through the sub is what pleased me most. It is a unit that, as expected, reinforces the bass. Without excess, without frills. It doesn't add a shapeless, vague, indeterminate mass of low end. It is a concise, "tight," controlled bass.
The importer wasn't lying. It really is a reliable system with excellent value for money.

Although I find them perfect as a second pair of monitors for picking out nuances and getting a slightly more "refined" mix, they can certainly serve as your only monitoring option. Personally, I would complement them with another, slightly "fuller" system for contrast, for example the DSM2s. They make a good team.

Specifications
2 x satellites
Power: 55 W
Dimensions: 15.7 x 15.7 x 21.5 cm
Weight: 2.25 kg per unit
1 x subwoofer
Power: 65 W
Dimensions: 35.56 x 35.56 x 38 cm
Weight: 20.25 kg