Filter / Wah (Filter Modeler)
The Line 6 FM4 Filter Modeler is a digital filter Modeler pedal based on the Digital modeling, with Filter/Model Selector, Freq, Q, Speed, Mode, Mix controls. Features stereo I/O, tap tempo, an expression input.
| Category | Filter / Wah (Filter Modeler) |
| Circuit / based on | Digital modeling |
| Signal | Digital |
| Controls | Filter/Model Selector, Freq, Q, Speed, Mode, Mix |
| Footswitches | 4 |
| Bypass | Buffered bypass |
| Tap tempo | Yes |
| Expression input | Yes |
| Stereo | Yes |
| I/O | Stereo in / stereo out (L-mono, R) |
| Power | 9V AC |
| Battery power | Yes |