It& 39;s a product of 48V phantom power for condenser mics Balanced mic inputs and outputs to connect in-line with your mic, mixer or sound card. Aluminum alloy housing makes it more durable. It& 39;s easy to operate the supply with simple switch and LED indicator light. Good chioce for you. Feature - Color: Black - Material: Aluminum alloy - Size: 9.3 8.7 4.7cm (L W H) - Input: AC 220V, 50Hz 70mA - Output: AC 18V, 600mA - Style: EU Plug / US Plug - Easy operation with simple on- off switch and LED indicator light. - Professional Phantom Power Supply delivers reliable 48V DC phantom power for condenser microphones and transfer sound signal to sound card. - Compact and durable, made of black aluminum. High-quality components and rugged construction ensure this power supply with stand up to the test and perform on all occasions. - This is a single channel unit with balanced mic XLR inputs and outputs to connect in-line with your mic and mixer. - It will not introduce any noise into any of the signal paths. for stage and studio use. - Two groups of balanced power supply, balanced input and output signals, make the voltage balance and stable, inhibit common mode interference.