Signals from quieter to louder:
• Acoustic guitar pickup, with no pre-amp
• Microphone and electric guitar
• Active electric guitar and preamped acoustic guitar
• CD player, tape deck, keyboard (line level)
• Headphone level
• Listening level (see above picture for sound levels in this area)
Signal Levels
![](https://sp-ao.shortpixel.ai/client/to_auto,q_lossless,ret_img,w_575,h_469/https://www.promusicalaska.com/wp-content/uploads/2014/10/SoundLevelDiagram.jpg)