The TH-06 employs a custom 45mm magnet driver and features Bass XL, a special voicing that delivers enhanced low-frequency response for superior dynamic range, while offering excellent clarity and minimal distortion. You get deep low bass that is balanced, never overpowering the rest of the audio field or sounding tubby or artificial.TASCAM TH-06 headphones are lightweight and feature high-quality, circumaural, closed-back ear cups that provide listening isolation while minimizing headphone blee..