Keeley Hydra Stereo Reverb and Tremolo Pedal

Pick up a Hydra to drench your guitar tone in the dense sound of stereo effects. Choose from three different reverb and tremolo styles to color your sound.


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Overall User Ratings (based on 1 ratings)
  • Overall:
    5 out of 5 stars
  • Sound:
    4.5 out of 5 stars
  • Features:
    5 out of 5 stars
  • Ease of Use:
    4.5 out of 5 stars
  • Quality:
    5 out of 5 stars
  • Value:
    5 out of 5 stars
  • The Wow Factor:
    5 out of 5 stars
Overall: 5 out of 5 stars
(1) (see rating details)
Submitted March 12, 2024 by Allan B

"Great workhorse pedal"

Overall: 5 out of 5 stars
(see rating details)
Verified Customer zZounds has verified that this reviewer made a purchase from us.
The reverbs are fairly standard and go from drippy 60's spy movie to a huge hall. There are some modulation and modification parameters but nothing in the territory of the huge cloud P&W style reverbs, but that's not where I think this pedal is aimed anyway. However when ran in stereo it can still produce some really beautiful ambience, especially when paired with Keeley's Halo delay. Definitely a step or two above most amps built in digital reverbs, and you can have 3 reverb presets plus the panel. The tremolo is also very nice and can go from subtle to How Soon is Now. It's not quite as crazy as some trems out there, but all modes are very musical. You can also have 3 trem presets plus panel. It also sounds wonderful in stereo.For performance features it takes a tiny bit of tap dancing to move presets or engage tap tempo, and even though it's the same layout it requires different steps (pun intended) to navigate than the Halo which is confusing at first. There is also an expression pedal jack, but I've not used it yet.When you take into account all this pedal can do, plus it's stereo AND normal form factor, it's a bargain. Definitely check it out if you are in the market.

Musical Background:

Playing for decades and still out playing covers that are older than me :)

Musical Style:

Rock, prog, CCM
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