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!

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!
P-RMOD-4BB3C1D Reverb Tank - MOD®, 4BB3C1D, Long Decay, 2-Spring
Long (2 Spring) tank, long decay, 150Ω in / 2,250Ω out. Input insulated/output grounded connectors. Vertical/connectors down mounting. MOD® Reverb Tanks are high quality upgrade units. Compatible amps include Marshall™ DSL60, TSL60, DSL100, TSL100, DSL201, DSL401, TSL122.
$23.50
P-RAMC2BF Reverb Tank - Accutronics, AMC2BF, 2-Spring
Accutronics mini-size spring reverb tank. 2-spring, 150Ω input impedance, 1500Ω output impedance. 4.88" x 1.73" mounting centers. Available in medium or long decay.
$9.00
P-RMOD-4BB3C1B Reverb Tank - MOD®, 4BB3C1B, Long Decay, 2-Spring
Long (2 Spring) tank, long decay, 150Ω in / 2,250Ω out. Input insulated/output grounded connectors. Horizontal/open side down mounting. MOD® Reverb Tanks are high quality upgrade units. Compatible amps include Fender® Blues Deluxe (original version), Blues Deville (original version), London Reverb, Studio Lead, Harvard Reverb II, Showman 115 (80’s version), Rivera™ Rake, Jake Studio Combo, and Fandango models, Laney™ VC30, Crate™ V-32 Palomino.
$23.50
P-RMOD-8BB2C1B Reverb Tank - MOD®, 8BB2C1B, Medium Decay, 3-Spring
Short (3 Spring) tank, medium decay, 190Ω in / 2,575Ω out. Input insulated/output grounded connectors. Horizontal/open side down mounting. MOD® Reverb Tanks are high quality upgrade units. Compatible amps include Rivera® Pubster 25, Chubster 40, Knucklehead Reverb, Crate® G212, Palomino, V16,V32, Kitty Hawk® Supreme Model, Vox® AC30 (70’s models with solid state reverb circuitry), Marshall® G80RCD, G100RCD, Brunetti® Singleman, Mesa Boogie® Rectoverb, Laney® VC15, Music Man® RD50, plus others .
$22.26
P-RMOD-8BB2C1A Reverb 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 .
$22.26
P-RMOD-8BB3C1B Reverb Tank - MOD®, 8BB3C1B, Long Decay, 3-Spring
Short (3 Spring) tank, long decay, 190Ω in / 2,575Ω out. Input insulated/output grounded connectors. Horizontal/open side down mounting. MOD® Reverb Tanks are high quality upgrade units. Compatible amps include Fender Harvard Reverb II and Yale Reverb amps (short tank).
$22.26
P-RMOD-8BB2A1B Reverb Tank - MOD®, 8BB2A1B, Medium Decay, 3-Spring
Short (3 Spring) tank, medium decay, 190Ω in / 2,575Ω out. Input grounded/output grounded connectors. Horizontal/open side down mounting. MOD® Reverb Tanks are high quality upgrade units. Compatible amps include select Ampeg® and Crate® models, plus others .
$22.26
P-RMOD-4BB2A1B Reverb Tank - MOD®, 4BB2A1B, Medium Decay, 2-Spring
Long (2 Spring) tank, medium decay, 150Ω in / 2,250Ω out. Input grounded/output grounded connectors. Horizontal/open side down mounting. MOD® Reverb Tanks are high quality upgrade units. Compatible amps include Music Man™ amps as well as the Mesa Boogie™ F-30 and F-50 models.
$23.50
P-RMOD-9BC2C1B Reverb Tank - MOD®, 9BC2C1B, Medium Decay, 3-Spring
Long (3 Spring) tank, medium decay, 190Ω in / 12,000Ω out. Input insulated/output grounded connectors. Horizontal/open side down mounting. MOD® Reverb Tanks are high quality upgrade units. Compatible amps include VOX AC30TBR (‘91-’93 Vintage top Boost Reverb), Gibson Super Goldtone GA-30RV, Gibson Super Goldtone GA-60RV.
$25.98
P-RMOD-8BB3D1B Reverb Tank - MOD®, 8BB3D1B, Long Decay, 3-Spring
Short (3 Spring) tank, long decay, 190Ω in / 2,575Ω out. Input insulated/output insulated connectors. Horizontal/open side down mounting. MOD® Reverb Tanks are high quality upgrade units. Compatible amps include select Rivera® amplifier models, plus others .
$22.26
P-RTAD-4BB3C1B Reverb Tank - Tube Amp Doctor, 4BB3C1B, Long Decay, 2-Spring
  • Replaces: 4BB3C1B
  • Solid, sturdy construction
  • Type: Long (2 Spring) tank
  • Decay: long decay
  • Input: 150 Ω
  • Output: 2,250 Ω
  • Connectors: Input insulated/output grounded
  • Locking: No lock
  • Mounting: Horizontal/open side down


Compatible amps include Fender® Blues Deluxe (original version), Blues Deville (original version), London Reverb, Studio Lead, Harvard Reverb II, Showman 115 (80’s version), Rivera™ Rake, Jake Studio Combo, and Fandango models, Laney™ VC30, Crate™ V-32 Palomino.
"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.
$29.95
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