High Quality Sound Quality: Dynamic Microphone Amplifier is specially designed for human voices, making vocal recordings clearer, more detailed, more realistic and vivid. Sound Enhance: Microphone Preamp, with powerful gain capability, ensures clear sound transmission and excellent effect Low Floor Noise: Microphone amplifier effectively reduces noise floor, reduces noise interference, and presents clearer audio effects, which is very suitable for recording or performing. Compact And Portable: Microphone preamplifier measures 101x19mm, compact and easy to carry. Easy to Use: Mic Booster Preamplifier, plug and play, simple and not cumbersome, can meet the needs of different occasions. Specification: Material: ABS Frequency range: 10-120000Hz (-0.3db) GAIN:28 db(load 1 kohms) OUTPUT NOISE:9V (JIIS A) POWERED : 48 Volts according to IEC 61938 LOAD RESISTANCE: >1000 Ohms POWER CONSUMPTION: 3.0 MA MAXIMUM OUTPUT LEVEL(0.5%THD):8.3dbv(2.6v) RESISTANCE:135 Ohms CONNECT: 3 pin male / female XLR connector Size Chart: 10.1cmx1.9cm/3.98inchx0.75inch Package Includes: 1xDynamic microphone amplifier Note: Please allow slightly errors due to manual measurement and different monitors.