Pictures
8-bit prototype
Controls
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The function of the buttons depends on the type of effect selected:
| MODEL | FREQ | Q | SPEED | MODE |
| Tron Down | Frequency | Width | Range: Low/High | Low/Band/High-pass |
| Tron Up | Frequency | Width | Range: Low/High | Low/Band/High-pass |
| Seeker | Patterns | Width | Speed | Number of Steps in Sequence (2–9) |
| Obi-Wah | Frequency | Width | Speed | Low/Band/High-pass |
| Voice Box | Start Vowel | Stop Vowel | Speed | Automatic/Pedal |
| V-Tron | Start Vowel | Stop Vowel | Attack Time | Up/Up & Return |
| Throbber | Frequency | Width | Speed | Ramp Up/Ramp Down/Triangle/Square |
| Spin Cycle | Frequency | Width | Speed | Speed Sensitivity to Input Volume |
| Comet Trails | Frequency | Width | Speed | Gain |
| Slow Filter | Frequency | Width | Attack Time | Up/Down |
| Octisynth | Content | Width | Vibrato Speed | Vibrato Depth |
| Synth-O-Matic | Frequency | Width | Waveform | Pitch |
| Attack Synth | Frequency | Waveform | Attack Time | Pitch |
| Synth String | Frequency | Attack Time | Modulation Speed | Pitch |
| Growler | Frequency | Width | Speed | Pitch |
| Q Filter | Frequency | Width | Gain | Low/Band/High-pass |
Information
Line 6
Offering an awesome collection of vintage filter and monophonic synth effects, 24-bit processing, and true bypass, the FM4 features 16 models of classic and collectible filters and synths. With four programmable presets, the FM4 gives guitarists easy access to a set of world-class tones and controls for customization.
- 4 completely programmable presets available at the tap of a toe. No more need for multiple pedals for multiple effects.
- True Bypass switching, so your direct tone is exactly that; direct from your guitar to your amp.
- Expression Pedal Input - for real time control of all effect settings. Also the ability to morph between settings lets you create effects not possible with the originals.
- Nothing but knobs. No menus, no multiple button contortionist gymnastic moves, just twist and go.
- Stereo inputs and outputs
- Runs from batteries (Heck, we even include a set) or optional power adapter.
Tired of the same old effects? You say you want something a little bit... different? The FM4 Filter Modeler, part of Line 6's award winning line of Stompbox Modelers, gives you an array of vintage and new effects from just a wee bit odd to full frontal freaky! From the gentle auto-wah of an envelope filter to the complete wackiness of mutated VCO controlled ring modulators, FM4 can get as strange as you wanna be.
Video
(2008-11-14) Line 6 FM4 Filter Modeler: Change Your Filter Models Often by GearWire
Reviews
myFXDB user reviews
1 review, average score of
| Date | User | Version | Score | Positive | Negative |
|---|---|---|---|---|---|
| 2014-06-22 | deathlessramz | 8/10 | ... | ... |
