Stable voltage doubler filter circuit effectively filter out AC signal interference Built-in low-pass filter circuit design fully filter out external audio equipment interference noise Soft start-up function avoiding the impact sound of when starting up 2 groups of balanced power supply balanced input and output signals Make the power supply stable and suppress the common mode interference Improved shielding technology separate design of power supply and power supply external power supply with shielding magnetic ring isolates AC electromagnetic waves from DC power supply and ensures that the signal is not Colour:black Material:Metal Size:about 160 x 81 x 42mm Package Contents: 1 x Phantom Power 1 x audio cable 1 cord Only the above package content other products are not included. Note: Light reflection 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.