A superb bass response takes the forefront in Audio-Technica's ATH-CKS77 Solid Bass In-ear Headphones. A-T's innovative Double Air Chamber extends bass response without compromising mid- and high-frequency content. The two-position post adjusts the earpieces for better fit and sound isolation, while a uniquely developed 12.5 mm direct diaphragm results in more impactful audio reproduction and lighter weight. A carrying pouch and ear tips (XS/S/M/L) are included.