I have one of these and have bought several for family/friends as gifts. Truly a fantastic speaker, loud and crystal clear quality thats very surprising for a speaker of its size, although i can’t attest to the refurbished ones. Continually voted one of the best speakers under $ 100 and they usually float around the price all year with the exception of a once or twice a year sale that drops the price to $ 80 or so. From the website description:

Product Details

High-Fidelity Sound

Hi-Res Audio certification ensures your music sounds the way the artist wants it to be heard, while Qualcomm aptX technology preserves sound quality when streaming via Bluetooth.