EFEKTOR WF3607 Wah Filter is a filter effect from Kuassa built around three wah types and three envelope filters, with a MIDI expression pedal mode for rocking the wah action.
EFEKTOR WF3607 Wah Filter at a glance
| Developer | Kuassa |
|---|---|
| Type | Effects / Filter |
| Formats | VST3, VST2, AU, AAX |
| Operating systems | Windows Vista or later, macOS 10.7 or later |
| Apple Silicon | Native |
| Architecture | 64-bit |
| Hosts named by the developer | Pro Tools, Reason |
| Free trial | Available |
| Price on Plugin Boutique (October 2026) | €22.81 |
What EFEKTOR WF3607 Wah Filter does
The plugin is organized as a wah filter with three selectable wah types and three envelope filter variants, giving a range of wah-style tones within one unit. The developer lists more parameters to adjust than a regular wah pedal offers, so the filtering can be shaped beyond a fixed sweep. A MIDI expression pedal can be mapped to produce the true wah-wah rocking action of a physical pedal, and the filtering alters resonance to increase expressiveness in playing.
Wa wa wacka wacka wacka wa wa is how the developer describes the 1920s guitar players who were fascinated by the effect, and the notes trace the lineage from an accidental invention that became the Cry Baby pedal. The plugin is available as VST3, VST2, AU and AAX for Windows and macOS (64-bit) and loads in Pro Tools and Reason. Queries also pair the name with keygen and serial key, and the release is handled as .rar and .iso files.
Key features
- Three wah types. Three wah types are selectable, each with its own filter behavior, and the plugin can be set to suit different playing styles.
- Expanded parameter set. More parameters can be adjusted than on a regular wah pedal, allowing finer control over the filter response.
- MIDI expression pedal. A MIDI expression pedal can drive the filter, reproducing the rocking action of a true wah-wah pedal.
- Resonance control. The filtering alters resonance, which the developer links to a more expressive feel when playing.
Compatibility
Available as VST3, VST2, AU and AAX for Windows and macOS (64-bit). Minimum OS is macOS 10.7 and Windows Vista, and native support for Apple Silicon is listed.
EFEKTOR WF3607 Wah Filter compared with similar plugins
FilterFreak from Soundtoys is a filter effect for the same host and format set, offered as VST3, VST2, AU and AAX for Windows and macOS. Both are filter effects, so the choice rests on the type and the operating systems each one supports.
| Plugin | Developer | Type | Formats | Systems | Price |
|---|---|---|---|---|---|
| EFEKTOR WF3607 Wah Filter | Kuassa | Filter | VST3, VST2, AU, AAX | Windows, macOS | €22.81 |
| FilterFreak | Soundtoys | Filter | VST3, VST2, AU, AAX | Windows, macOS | €143.79 |
Price and availability
EFEKTOR WF3607 Wah Filter was listed on Plugin Boutique in October 2026 at €22.81. A free trial is offered. Prices change often, so the store page shows the current one.
EFEKTOR WF3607 Wah Filter FAQ
Does EFEKTOR WF3607 Wah Filter run on Apple Silicon Macs?
Yes. Native support for Apple Silicon is listed, and the minimum OS on macOS is 10.7.
Which hosts are named for the plugin?
The developer names Pro Tools and Reason as hosts for the plugin.