Jhs Pedals Spring Tank
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Jhs Pedals
https://www.rosselectronics.com
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An amp-style spring reverb designed for modern playing
Spring reverb is one of the most iconic sound signatures of the electric guitar: a lively resonance, a natural bounce, and that "splash" character evoking vintage combos as well as studio outboards. The JHS Spring Tank captures this "amp-style" spirit in a compact pedal, with a very musical approach: quick to dial in, ready to play immediately, and retaining the dynamic feel of a spring reverb.
Who is it for, which styles, and in what contexts?
The Spring Tank is aimed at guitarists who want a credible spring reverb without menus, screens, or hassle. Ideal for blues, rock, surf, country, indie, post-rock, but also pop or ambient as soon as you start processing reverb tails via the effects loop. In the studio, it sits easily at the end of the chain to add depth without drowning the attack; live, its two "reverb levels" at your feet are perfect for switching from an open verse to a bigger chorus, or to trigger a dramatic reverb tail at the end of a phrase.
Features and controls: two Tanks, a creative loop
The heart of the pedal lies in two mix settings : Tank 1 (your main reverb level) and Tank 2 (a secondary level activated on demand). You set two ready-to-use reverb amounts, then switch between them with the Tank 2 footswitch without changing your settings mid-song.
The Depth and Length knobs control the sense of space and the reverb decay time respectively, while Highs adjusts the brightness of the reverb to fit any amp (from crystal-clear clean to darker crunch). Finally, Boost compensates for any perceived volume loss and allows for a more present reverb that doesn't get lost in the mix.
The real "sound design" touch comes from the effects loop on the reverb tails : by inserting a chorus, tremolo, delay, phaser, or even fuzz into the loop, you process not your dry sound but only the reverb tail. An internal switch lets you choose whether this loop is always active or only active when Tank 2 is engaged : handy for reserving a more experimental treatment for your second reverb preset.
The sound
The JHS Spring Tank delivers a spring reverb with a bouncy character, featuring an attack that retains definition and a note decay that can range from a subtle "halo" to a fully embraced drip. It responds well to playing dynamics and can be easily dialed in according to your guitar and amp thanks to the Highs control (rounder for jazz/blues, brighter for surf or pop arpeggios). It's found on rigs of artists with varied universes, including Justin Meldal-Johnsen, Declan McKenna, Nick Steinhardt (Touché Amoré), and Suzanne Santo, illustrating its versatility from studio to touring pedalboard.
Technical specifications
| Effects | Reverb | Type | sector |
| Technology | Digital | Use | electric guitar |
| Format | Pedal | Color | White |
| EQ | Treble | ||
| Two switchable reverb mixes | Tank 1 (primary) and Tank 2 (secondary) | Dimensions | 130 x 70 x 60 mm |
| Knobs | Depth, Length, Highs, Boost, Tank 1, Tank 2 | Weight | approximately 260 g |
| Bypass | true bypass | Battery operation | no |
| Input | 6.35mm mono Jack | Required power supply | 9V DC (center negative), 2.1 x 5.5 mm connector |
| Output | 6.35mm mono Jack | Consumption | 73 mA |
Questions frequently asked
What kind of spring reverb sound does the JHS Spring Tank offer?
The reverb provides a bouncy character, ranging from a subtle shimmer to a more pronounced 'drip'. The Depth, Length, and Highs controls allow adjustment of the space, duration, and brightness of the note tails.
How do the Tank 1 and Tank 2 controls work?
The two knobs set two distinct reverb levels. Tank 2 is activated via footswitch, allowing switching between reverb levels during playing.
Does the effects loop of the JHS Spring Tank process the dry signal?
The loop only processes the reverb decay, without affecting the dry signal. Effects such as chorus, tremolo, delay, phaser, or fuzz can be placed there. An internal switch allows it to be always active or only when Tank 2 is engaged.
What power supply is required for this pedal?
A 9 V DC center-negative power supply with a 2.1 x 5.5 mm connector is required; current draw is 73 mA and battery operation is not supported.
What are the connectors and dimensions of the Spring Tank?
Input and output use 6.35 mm mono jacks. The enclosure measures 130 x 70 x 60 mm and weighs approximately 260 g.



