Modulation (Chorus / Flanger / Tremolo Modulation Machine) · $499
The Universal Audio Astra Modulation Machine is a digital chorus / Flanger / Tremolo Modulation Machine pedal based on the Analog modulation emulation (BBD chorus, studio flanger/doubler, opto tremolo), with Speed, Depth, Intensity, Shade, Shape, Mode (6 knobs) controls. Features stereo I/O, tap tempo, MIDI, 4 presets. From $499.
| Category | Modulation (Chorus / Flanger / Tremolo Modulation Machine) |
| Circuit / based on | Analog modulation emulation (BBD chorus, studio flanger/doubler, opto tremolo) |
| Signal | Digital |
| Controls | Speed, Depth, Intensity, Shade, Shape, Mode (6 knobs) |
| Switches | 3 toggle switches (per-effect functions) |
| Footswitches | 2 |
| Bypass | True/buffered bypass (switchable) |
| True bypass | Yes |
| Tap tempo | Yes |
| Presets | 4 |
| MIDI | Yes |
| Stereo | Yes |
| I/O | 2x 1/4" TS in, 2x 1/4" TS out (stereo); USB-C |
| Power | 9V DC center-negative |
| Power draw | 400 mA |
| Enclosure | dual footswitch |
| Dimensions | 2.56 x 3.62 x 5.55 in (65 x 92 x 141 mm) |
| Weight | 1.24 lb (0.567 kg) |