Sound card function: Yes Sound adjustment: Microphone, accompaniment, reverb, headphone volume; Microphone gain adjustment; Function buttons: 13 keys Sound effect buttons: 2 keys, Special effect buttons: 6 keys Bluetooth switch: Support Hardware specifications: Main chip (sound card): BP1048B2 Power specifications: Power supply (adapter): DC 5V/1A Power indicator (LED): Power on: Green light; Power supply interface: TYPE-C interface Input and output ports: Accompaniment input: 1 channel (3.5 ports) Dynamic input: 1 channel (XLR jack) 48V microphone input: 1 channel (XLR jack) Headphone output: 1 channel (3.5 ports) Headphone output: 1 channel (3.5 ports) Live interface: 1 channel (3.5 port) OTG interface: 1 channel (TYPE-C port) Power supply interface: 1 channel (TYPE-C port) Audio performance specifications: Analog audio output: /RT, stereo Dynamic range 1kHz: equal 105dB Crosstalk: equal -106dB Signal-to-noise ratio: equal 85dB Output level (Vrms):(1.0-2.0V 10kR) Headphone output power: 5 mW x2CH Frequency response: 5MHz (Less than -3dB) Color:B:White Material:ABS Package Contents: 1 * G1 tuner 1 * TYPE-C data cable 2 * Four-section audio cable 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.