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Reverb Tank - MOD®, 4AB3C1B

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Item ID: 003293
Price: $18.95
In stock
  • Replaces: 4AB3C1B
  • Solid, sturdy construction
  • Type: Long (2 Spring) tank
  • Decay: long decay
  • Input: 8 Ω
  • Output: 2,250 Ω
  • Connectors: Input insulated/output grounded
  • Locking: No lock
  • Mounting: Horizontal/open side down

Compatible amps include tube reverb from 1963-1990 such as the Princeton Reverb, Vibrolux Reverb, Deluxe Reverb, Super Reverb, Pro Reverb, Twin Reverb, Quad Reverb, Super Six Reverb, Vibrosonic Reverb. This also includes all reissue equivalents. Als includes Fender™ ’63 Reissue Reverb Unit, Fender™ Concert II, Mesa Boogie™ MK2C plus other models, LAB™ Series L5, L7, L9, Koch™ Powertone I, Ampeg™VT-40 and Super Rocket SR212, B-52™ AT-100.

The MOD® Reverb Tanks are high quality upgrade units. Some of the major differences between the MOD®s and other reverb tanks are that the Transducers are wired directly to their respective RCA jacks as opposed to current production tanks where Transducers are connected by a detachable plug to their respective RCA jacks. This makes the tanks less receptive to any outside interference. The original Hammond Accutronics tanks from the 1960s were also wired directly to their respective RCA jacks. In addition, very close attention has been paid to the spacing and size of the lamination of the Transducers resulting in a more vintage like tone.

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

UPC/EAN: 797734820928

RoHS Compliant

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Product Reviews

4.56 out of 5 based on 16 reviews



Great tank!!!! I would highly recommend these and would purchase them again for sure!!!!

mark frigillana - January 15th, 2019

worked out better than stock.

crokecf - July 23rd, 2018

Mine was loosely shipped in a bigger box with my other items. It failed after about 3 hours use. AES had me ship the defective one back which cost me more than buying one...
Now I have a two week or so wait for another tank to arrive and a customer without reverb in his amp. The tank did sound pretty good while it lasted. I could have bought one locally and will probably have to for this customer.

Robert Murray - October 20th, 2016

Everything was really smoothm, thank you, the product arrive perfectly very well packaged and worked without any problem, thank you for a great transaction and a satisfied customer.

Arturo1365 - May 14th, 2016

Great part, great price

Afab - December 12th, 2015

Nice gutteral sound.

Frank m speer - July 16th, 2015

The MOD tanks sounds smoother and warmer than my Fender Twin's original (2005) Accutronics tank. AES was fantastic as usual with shipping; careful packaging and a quick delivery!

Paul Azpeitia - June 18th, 2015

This tank replaced the noisy original one in my 1971 Fender Vibrolux Reverb. The old one had a very loose spring that constantly chattered and crashed making it unusable. This new MOD unit is well made and installed easily. Mounted on the original backing board, wrapped in thin bubble wrap and enclosed in the vinyl reverb bag, it is well isolated and very quiet. Every tank has it's own sound I've come to know, and this MOD unit has a rather dark tone with slightly rolled off highs, not bright and drippy like some reverbs in other Fender amps. Oh well... nonetheless serviceable and a good sound as it is but not the best I've heard. Thanks AES for helping me get the right tank

john brite - April 8th, 2015

Very rich reverb, maybe a bit too rich but hey, who's counting seconds???? You can always turn it down! Very nice! Best alternative since Accutronics went overseas. Great value.

Jefrey Brown - February 27th, 2015

I was refered to this reverb tank as the one to get from an over qualified expert.
Unfortunately, this one does not sound good and the reverb is much too long and not pleasant.

john ticktin - February 13th, 2015


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