TEAC HA-P50-R portable headphone amplifier DAC equipped with high-resolution sound source corresponding Red Frequency characteristic 10Hz ~ 100kHz (AUDIO IN input) Dimensions 64 (W)  21.7 (H)  112 (D) mm (not including protrusions) / 68 (including protrusions) (W)  23 (H)  126 (D) mm / Weight 210g Accessories USB-Micro USB cable, USB-A DC charging cable, fixing rubber band  2, Japanese manual English product URL:http://audio.teac.com/product/ha-p50/specifications/