Features:Compact size 4-channel sound card mixing console with 2 XLR/TRS combined mono MIC/LINE input jacks and 2 TRS & 2 RCA stereo input jacks.This mixer engaged with input gain, 2-band EQ(HIGH/LOW) and volume adjustment, delay time and repeat control knobs.Built-in 48V phantom power is suitable for power supply to condenser microphone directly.3.5mm high definition headset output port; support BT connection and MP3 player function; with sound card, can connect with PC directly.5V low voltage power supply, can be powered by computer/ 5V power bank/ USB/ DC adapter, very convenient to use.Specifications:Brand: MusladyModel: B4Color: Red/Green/Yellow(optional)Material: PlasticInput Channel Sensitivity --MIC: -60dBStereo Channel Input: -40dBEffect Send: -20dBEffect Return: -20dBOutputs: 4V max.Signal To Noise Ratio: -80dBParametric EQ --HI: ±15dB/12KHZLOW: ±15dB/60KHZItem size: 17.6 * 18.8 * 5.6cm / 6.9 * 7.4 * 2.2inItem weight: 550g/ 19.4ozPackage size: 24 * 24 * 9cm / 9.4 * 9.4 * 3.5inPackage weight: 1200g/ 43ozPackage List:1 * Mixing Console1 * Power Adapter1 * USB Cable1 * Users' Manual(English)