Keeley Electronics Hydra Stereo Reverb & Tremolo Pedal

£269.00

This is the Keeley Electronics Hydra Stereo Reverb & Tremolo Pedal from Keeley Electronics, listed in Tremolo & Vibrato Pedals on Just Pedals. Read More below.

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The Keeley Hydra combines two tone-enriching effects in one simple, pedalboard-friendly package. This feature-packed sonic workstation offers a range of high-fidelity reverb and tremolo algorithms that can add both space and dimension to your guitar, bass or synth sounds.

Following in the footsteps of their acclaimed Eccos 2-in-1 delay/looper, Keeley’s versatile Hydra pedal is the perfect companion for vintage aficionados who adore old-school ambient reverbs mixed together with traditional tremolo tones.

2 Effects in 1 Pedal

Hydra is split into two sides to reflect each of its sound engines, with independent Reverb and Tremolo footswitches making it easy to engage each of these effects or use them simultaneously. To alter the response of this killer tremolo/reverb combination, you can change their order to suit your specific tonal needs.

In addition, the Keeley Hydra’s ‘Alt Controls’ let you access in-depth parameters to shape the character of both engines. The pedal also offers an infinite reverb trail that’s perfect for creating dreamy soundscapes with, while the tremolo side’s footswitch doubles up as a tap-tempo function for syncing-up with a drummer or any musical accompaniment.

6 Sounds in Total!

Keeley’s Hydra pedal comes equipped with gorgeous Spring, Plate and Room reverb algorithms, plus tap-tempo enabled Harmonic, Vibrato and Sine wave tremolo sounds. All of these effects are accessible at the press of a button, and Hydra even allows you to save and store 3 of your favourite presets for instant recall.

Additional Features

With expression pedal control, remote bypass, analog-dry-through, kill-dry and a ridiculously low power-draw – the Keeley Hydra is sure to add immense flexibility and stunning sounds to any rig.

Key Features

  • Stereo, high-fidelity reverb and tremolo effects pedal
  • 3 memory presets, subdivisions, trails, infinite hold reverb trail
  • 3 reverb (Spring, Plate, Room) and 3 tremolo modes (Sine, Harmonic, Vibrato)
  • Huge array of tone and time-based controls with the ‘Alt Hold’ feature
  • Bypass and tap tempo onboard or remotely with any style pedal switcher
  • Expression pedal assignment over any parameter and in any direction
  • Pro Rig designed, remote control thru 1/4″ jacks for live use with pedal switcher systems
  • 100% analog dry signal, audiophile designed input to output
  • Stereo ‘True-Bypass/Trails’, switchable on-the-fly
  • Made in Edmond, USA
  • Powered by a regular 9V DC PSU (centre -, 2,1 mm, low ~115 mA current draw)

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Brand

Keeley Electronics

Keeley Electronics is a prominent American manufacturer of guitar effects pedals, founded in 2001 by Robert Keeley. The company has established a strong reputation in the boutique pedal industry through its focus on precision engineering and high-quality audio performance.

Keeley is renowned for its active and passive pedal designs, including iconic models like the Katana Blues Driver, the Compressor Plus, and the Delay Workstation. Keeley’s pedals are distinguished by their meticulous craftsmanship, innovative circuit designs, and reliability.

The company’s products often incorporate advanced features such as flexible EQ controls, analogue and digital hybrid processing, and extensive tone-shaping capabilities, making them favoured by both professional and amateur guitarists seeking exceptional sound quality and versatile performance.

Category

Tremolo & Vibrato Pedals

Tremolo varies amplitude, making volume rise and fall; vibrato varies pitch, making the note move sharp and flat. Some circuits combine both or derive them from modulation systems that blur the boundary. Rate, depth, waveform and stereo phase determine whether the motion is smooth, pulsing, choppy, seasick or spatial, while tap tempo can lock the cycle to a rhythm.

Tags

Bass

Voiced or equipped to retain low-frequency fundamentals and the higher headroom of a bass signal. Clean blends, crossovers and bass-specific filter ranges can preserve weight and articulation while the effected portion adds harmonics, movement or ambience.

Reverb

Builds a dense tail of reflections around the original sound. Early reflections establish apparent distance and size, while decay, diffusion, damping and modulation shape the density, brightness and movement of the later field. Pre-delay separates the dry attack from the ambience, and mix controls their relative level.

Stereo

Processes, creates or passes two audio channels. True stereo preserves separate left and right inputs, while mono-to-stereo effects generate spatial differences internally; routing, phase behaviour and whether trails remain stereo determine the resulting image. Some outputs sum to mono when only one socket is connected, which can change level or modulation depth.