As two of Japanese headphone specialist Audio-Technica's new lineup of Solid Bass Headphones, the in-ear model ATH-CKS77 ($120) and over-ear model ATH-WS70 ($150) are designed to create "overwhelming bass sound," using double air chamber systems. ATH-CKS77 promises a 5-25,000Hz frequency range using 12.5mm drivers and four different sizes of silicone rubber ear tips, while ATH-WS70 features diamond-cut aluminum housings, acoustically sealed earpads,…
