Feature: 1. INDEPENDENT MP3 VOLUME CONTROL: Using USB input to connect device to play MP3, and the MP3 part adopt independent volume control 2. 4 CHANNEL 3 BAND: 3 band EQ on all channels, high control adjust high frequency range, center control increases or decreases mid frequency, low control increases or decreases gain in bass range 3. WIDELY USES: Mixing console are used for studio recording of compact studio system, DJ equipment, live streaming and more 4. DURABLE METAL MATERIAL: Audio mixer sound board is made of metal material, easy to conduct electricity, shiny, sturdy and durable 5. EXCELLENT PERFORMANCE: Noise is ‑80dB, SNR more or equal than 82dB, frequency response is from 20Hz‑20kHz±0.5db, possess high performance Specification: Item Type: Mixing Console Material: Metal Colour: Black Product Power Supply: US Plug AC100-240V Noise: -80dB Frequency Response: 20Hz-20kHz±0.5db THD: ≤0.03% at 1KHz Signal to Noise Ratio: ≥82dB Microphone Maximum Input Level: 16dBu Circuit Maximum Input Level: 30dBu Stereo Maximum Input Level: 20dBu Headphone Output: 200Ω, 300mW Other Output: +20dBu. Package List: 1 x Mixer1 x User Manual1 x Plug