Line 6 FM4 Filter Modeler: Change Your Filter Models Often - YouTube
Line 6 FM4 - Sound demonstration and how to use - YouTube
Kinnatone Guitar Effects and Mods - The fm4 got our Gold Line 6 package! Preset switch, new industrial soft switches, LEDs and knobs. These are a great pedal! #line6dl4 #fm4 #Pedalboard #notpedalbored #