4Channels Audio Mixer is an affordable mixer and it comes with 4 channels and effects processor. The mixer has a USB port that can be used for power, playback and recording. Bluetooth is also available and it has a range of up to 8 meters.

The device has XLR input, 6.35mm input, and +48V phantom power.

4 channels, two mono channels, and a single stereo tape channel
2-band equalizer for each input
A USB port for playback and recording
Bluetooth support