Multi-functional live sound card with sound quality adjustment. - Model: Live Sound Card - Functions: Treble, Mid, Bass adjustment, Echo, Monitor function - Connection Type: USB connection - Power: Charging voltage 5V, charging current 1A - Sampling Rate: Output sampling rate 48kHz, 16bit - Accessories: User manual Thank you for viewing. Purchased from Shein in July. I connected it immediately upon arrival to test it, but it has been stored unused since then. You can enjoy various sound effects. I think it's good for those who do live streaming for casual conversations.