1 Set Upod Professional External Sound Card Microphone 48V USB 2.0 Recording Interface PC Karaoke Live Recording Interface This external sound card requires no installation, plug and play. It is equipped with adjustment knobs for setting more effects. It has a built-in 48V phantom power that can be used with a condenser microphone. Supports USB 2.0 high-speed connection. You can sing outside the computer by turning on the power and connecting the speakers. Features an innovative and unique microphone preamplifier with individual gain control. The attenuator function button for music automatically fades out when a microphone signal is present. External sound card only, other accessories demo in the picture is not included. Microphone input Material: Metal. Package includes: 1x External Sound Card Compatible with OS (Intel-Mac) and Windows XP 32-bit 64-bit), Windows 7 (32-bit/64-bit) and Windows 8 (32-bit/64-bit). Headphone output (at maximum volume, up to 100 ohm load) Frequency response: 22Hz to 20kHz (+/- 0.2dB) Power to ohms: 20 mW to 100 ohms +N: <0.06% (-66dB) Signal-to-noise ratio: -95dB, A-weighted Maximum output level: 100 ohms +2.0dBV, standard Load limit: 32 to 600 ohms Low-noise, high-headroom microphone preamplifier is ideal for recording vocals and instruments, size: app. 140x110x25mm / 5.51x4.33x0.98 inches