Reverb (Reverb + Tremolo) · $249
The Keeley Electronics Hydra Stereo Reverb & Tremolo is a digital reverb + Tremolo pedal based on the DSP reverb + tremolo, with Reverb, Tremolo controls + Smart Alt Controls (Shimmer, Spring Age, Room/Hall Size) controls, made in USA. Features stereo I/O, tap tempo, an expression input, 3 presets. From $249.
| Category | Reverb (Reverb + Tremolo) |
| Circuit / based on | DSP reverb + tremolo |
| Signal | Digital |
| Controls | Reverb, Tremolo controls + Smart Alt Controls (Shimmer, Spring Age, Room/Hall Size) |
| Switches | Effect-order switch |
| Footswitches | 2 |
| Bypass | True-Bypass or Trails (switchable) |
| True bypass | Yes |
| Tap tempo | Yes |
| Presets | 3 |
| Expression input | Yes |
| Stereo | Yes |
| I/O | true stereo in/out |
| Power | 9V DC |
| Power draw | 146 mA |
| Country of manufacture | USA |