This is definitely the best case I have come across. The sound quality is good but if you pay attention to detail you can hear a lot of artifacts and strange little noices in the backgrond, a simple solution is rasing the volume up but my ears get tired after a few minutes. My advice is buy a case for it. Primero lo importante, el sonido:En cuanto a balance general, es decir, tonalidad, y equilibrio de la respuesta en frecuencia (para mis oídos) tenemos un sonido ligeramente cálido, con un ligero énfasis en los bajos medios y bajos altos (entre 80-150 Hz) aproximadamente. The color, the soft texture, and the customer service! I would recommend this to anyone looking for a fitness tracker with notifications. DT770 (may need a headphone amp, sibilance issue will be fatiguing, can bridge the gap between the studio and listening pleasure, not portable)5. My only complaint was how difficult it was to assemble, since according to the instructions, each piece had to be placed together before anything could be screwed in (made sense, so parts of it would bow out from incorrect pressure). As for comfort? This is such a huge improvement over a regular squat pad! They?re a supple leather - no breaking in needed.