new and high quality MA-1 is a professional microphone preamplifier that operates on 48V phantom power, but does not pass phantom power to the microphone. This makes it perfect for ribbon and dynamic microphones alike. It made by cold-rolled plate, firm and durable. The four foam pads which raise the resist falling capability of microphone in a way. Its black looking makes it classic and graceful. All in all, MA-1 is a to use. Gain: 25dB Frequency response: 20Hz-20kHz1dB Input impedance: 150ohm Noise: Less than 3mv type:Without Cable Colour:black Material:plastic Package Contents: 1 x Mic Activator 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.