It’s a popular setup as human perception means it’s not as necessary to have stereo imaging for low frequency content. The 2.1 designation refers to the use of two stereo channels plus a subwoofer. did just that with a stylish 2.1 Bluetooth audio system. However, if you really want to impress with a pretty pair to crank out your tunes, you might consider designing and printing your own. Buying a set of stylish bookshelf speakers is a perfectly reasonable thing to do, and remains legal in most free countries around the world.
