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Reverb Tanks

Spring reverb tanks are used to create a unique reverberation effect in guitar amps and organs. The reverberation effect is created when an audio signal created by a transducer is sent through one or more springs, the movement of the springs is then converted back into an audio signal by another transducer at the other end, creating the unique sound. Not sure which tank you're looking for or what a 4AB3C1B is? Check out our spring reverb calculator to help you determine what these tank designations mean!

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P-RK-1AB2B1BReverb Tank - Accutronics, 1AB2B1B, Medium Decay, 2-Spring

Short (2 Spring) tank, medium decay, 8Ω in / 2,250Ω out. Input grounded/output insulated connectors. Horizontal/open side down mounting.


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P-RTAD-8AB3C1BReverb Tank - Tube Amp Doctor, 8AB3C1B, Long Decay, 3-Spring
  • Replaces: 8AB3C1B
  • Solid, sturdy construction
  • Type: Short (3 Spring) tank
  • Decay: long decay
  • Input: 10 Ω
  • Output: 2,575 Ω
  • Connectors: Input insulated/output grounded
  • Locking: No lock
  • Mounting: Horizontal/open side down




"TAD redefines Spring Reverberation. When the manufacturing of Accutronics Reverb cans in the USA has been announced to close down in 2008 TAD started the research for an own high quality production of the classic spring reverberation units. The goal was to create a drop-in replacement bringing back that stunning reverb sound that Fender made so popular since the early 1960s.



The TAD Reverb Cans achieve this goal and even more: deep and smooth reverb, no fluttering but wide frequency response with airy top end instantly inspiring to enjoy guitar playing. The rock solid mechanical design assures a very dependable and consistent quality performance exceeding any expectation. A drop-in replacement and upgrade as well for vintage as for modern reverb cans by size, performance and tone."



-Tube Amp Doctor



Questions about reverb tanks? See our tech articles for more information.


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P-RMOD-4FB3A1AReverb Tank - MOD®, 4FB3A1A, Long Decay, 2-Spring

Long (2 Spring) tank, long decay, 1,475Ω in / 2,250Ω out. Input grounded/output grounded connectors. Horizontal/open side up mounting. MOD® Reverb Tanks are high quality upgrade units.


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P-RMOD-8EB1C1BReverb Tank - MOD®, 8EB1C1B, Short Decay, 3-Spring

Short (3 Spring) tank, short decay, 800Ω in / 2,575Ω out. Input insulated/output grounded connectors. Horizontal/open side down mounting. MOD® Reverb Tanks are high quality upgrade units.


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P-RK-1BB2D1BReverb Tank - Accutronics, 1BB2D1B, Medium Decay, 2-Spring

Short (2 Spring) tank, medium decay, 150Ω in / 2,250Ω out. Input insulated/output insulated connectors. Horizontal/open side down mounting. A small low cost two spring unit designed for application when price is a major factor. Ideally suited for practice amps.


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P-RMOD-8BB2C1AReverb Tank - MOD®, 8BB2C1A, Medium Decay, 3-Spring

Short (3 Spring) tank, medium decay, 190Ω in / 2,575Ω out. Input insulated/output grounded connectors. Horizontal/open side up mounting. MOD® Reverb Tanks are high quality upgrade units. Compatible amps include Crate® BV120H Blue Voodoo, select Epiphone® and Gibson® models, plus others .


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P-RK-9EB3C1BReverb Tank - Accutronics, 9EB3C1B, Long Decay, 3-Spring

Long (3 Spring) tank, long decay, 800Ω in / 2,575Ω out. Input insulated/output grounded connectors. Horizontal/open side down mounting.


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P-RMOD-8FB2C1BReverb Tank - MOD®, 8FB2C1B, Medium Decay, 3-Spring

Short (3 Spring) tank, medium decay, 1,925Ω in / 2,575Ω out. Input insulated/output grounded connectors. Horizontal/open side down mounting. MOD® Reverb Tanks are high quality upgrade units.


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P-RBL3AB2C1BReverb Tank - Belton, 9AB2C1B, Medium Decay, 3-Spring

Long (3 Spring) tank, medium decay, 10Ω in / 2,575Ω out. Input insulated/output grounded connectors. Horizontal/open side down mounting. Compatible amps include select Fender®models, plus others .


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P-RBTDR-1H-XReverb Module - Accutronics Belton, Digi-Log, horizontal mount

A great digital reverb sound that easily replaces a spring reverberation unit. Simple interface requires only input, output, +5V, and ground. Output requires no external capacitors.


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