Good’s a relative term here. There are plenty of high-quality wireless speakers that give you the benefit of easier placement and set-up than wired speakers but, in general, you’re not going to get as good of a sound from a wireless connection as a wired connection. Part of that depends on the types of Bluetooth connections supported by your speakers and source (for instance, aptX HD and LDAC are noticeably higher quality than SBC). Though, honestly, not everyone can pick up on the differences. If your particular needs and setup benefit more from versatility and the hassle-free nature of wireless than they would for a perhaps barely-perceptible-to-you increase in sound quality, wireless might be the way you want to go. Many higher-end models offer modal connections, with wireless, USB, and traditional wired options. They tend to improve in quality in that very order.