The Avatar Pro X7 is a 5.1 Dolby Digital surround sound headset, focused on transforming stereo audio into rich and intense 5.1 digital surround sound via an official certified Dolby Digital encoder and decoder. The X7 was also made to partner with a wide range of devices, including XBOX, PS3, DVD players, PC, mobile phones and other small listening devices. Headphones: Frequency response: 20 Ð 20KHz Impedance: 32? Sensitivity: 119dB ± 3dB SPL Max. input power: 100mW 2.00V Driver size: 40mm Microphone: Frequency response: 50Hz – 10000Hz Sensitivity: -58dB ± 2dB Signal-to-Noise ratio: -56+/-2dB Other specifications: Jack plug/connector: 3.5mm 4 steps gold plated Cable length: 1.19m Avatar Pro X7 Audio Station Specifications: Audio input: 1 x Optical, 1 x 3.5mm Audio output: Support up to 2 sets of AVATAR X7 Volume control: Master volume Amplifier selection: ON/OFF Microphone control: volume and mute function. DSP: Dolby Digital 5.1, Dolby Pro-Logic II, and Dolby Headphone Package Content One Avatar Pro X7 Headset One Avatar Pro X7 Breakaway Inline Controller Cable One Avatar Pro X7 Audio Station One Avatar Pro X7 Microphone Directional One Avatar Pro X7 Microphone Mobile Phones One USB Cable One Optical Cable One 3.5 mm plug to 3.5 mm plug Cable One G6(F) to 3.5 mm plug *2 Cable One 3.5 mm plug to 2.5 mm plug Cable