What's the Difference between Line, Instrument and Microphone Levels?
Receive (RX) Audio Cable
What is Line In? - TAE
Headphone OUT to microphone IN for mobile phones - Electrical Engineering Stack Exchange
Build a Line Level to Microphone Adapter - Record from your Phone to Computer or Camera - YouTube
Understanding decibels in audio work
Can you use MIC in as line in? - Quora
USB 2.0 Audio Adapter Box with Line Input and Mic Input
SIP Network 2 Channel by 30W Wall Mount Amplifier for PA System with Line in /out Microphone Input and Speaker Output - China SIP Audio Amplifier, Wall Mount Amplifier | Made-in-China.com
Redback Mic/Line Pre-Amplifier to Line Level Out Converter - Altronics
How to connect your equipment - Audacity Manual
Line level to Mic level converter - CircuitLab
Amazon.com: USBGear USB 2.0 Audio Adapter Box with Line Input and Mic Input : Electronics
Amazon.com : Sescom LN2MIC-TASDR100 3.5 Line to Mic 35dB Attenuation 9" DSLR Cable for DR-100 : Camera Cables : Electronics
Audio attenuator for microphone input – A BIT OF MYSTERY
How to Choose among Mic in, Line in or AUX in to Plug in A Microphone? | FIFINE MICROPHONE
Connecting A Laptop Computer
I have a male-to-male audio cable (a 3.5mm jack on each end). Can it be used to play music from my iPod or smartphone on a PC? If so, how? - Quora
How to use a microphone jack as a line in jack - YouTube