Use the built-in low-pass filter circuit design to fully filter out the interference noise from the external audio equipment.Use the isolated voltage-boosting technology to effectively prevent the ground signal interference. Use two sets of balanced power supply,to balanceinput and output signals,makes the voltage be balanced and stable and inhibit common mode interference. Use the new USB-5V voltage boost circuit andthe human body,to settle the mismatch problems among the different regional electric supplies,voltages and . Delivers reliable 48V phantom power for condenser microphones and transfer sound signal to sound card in a compact,,plastic housing.Enjoy ultra low-noise audio performance and full-frequency response. Comes with one XLR audio cable with high quality XLR male and female connectors.High-quality components and rugged construction will this power supply with stand up to the test and perform on all occasions.Universal XLR input and output,compatible with all kinds of microphone music recording equipment. Color:gold material:metal Product size:4.8x9.5x8.7cm Package Contents: 1x Phantom power 1x USB 2.0 cable 1x Double plug 1x Manual Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.