Yamaha 4 Channel Mixer

Input Channels: You can plug in mics, keyboards, guitars, or audio players (each with volume and tone control). 2. Equalizer (EQ): Most have bass, mid, and treble knobs to adjust sound quality for each channel. 3. Gain Control: Lets you adjust input sensitivity for different signal strengths. 4. Main Output Control: Master volume that affects the entire mix. 5. Effects (optional): Some mixers include echo, reverb, or delay for vocals or instruments. 6. USB/Bluetooth/SD Options (optional): Modern mixers may support USB playback, Bluetooth streaming, or recording.