Filter / Wah (Envelope Filter)
The Rocktron Heart Attack Dynamic Filter is an analog envelope Filter pedal, with Sensitivity controls.
| Category | Filter / Wah (Envelope Filter) |
| Signal | Analog |
| Controls | Sensitivity |
| Switches | Distortion |
| Footswitches | 1 |
| Power | 9V DC |
| Power draw | 5 mA |
| Battery power | Yes |
| Enclosure | Rocktron heavy-duty chassis |