Reverb Tank - Mod® 8AB2A1B, Medium Decay, 3-Spring

Mod Electronics
Reverb Tank - Mod® 8AB2A1B, Medium Decay, 3-Spring image 1
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Reverb Tank - Mod® 8AB2A1B, Medium Decay, 3-Spring

In Stock
  • Replaces: 8AB2A1B
  • Solid, sturdy construction
  • Type: Short (3 Spring) tank
  • Decay: medium decay
  • Input: 10 Ω
  • Output: 2,575 Ω
  • Connectors: Input grounded/output grounded
  • Locking: No lock
  • Mounting: Horizontal/open side down

Compatible amps include select Fender® and Mesa Boogie® models, Reverend® Hellhound(early), Goblin, and Kingsnake, PRS® SE-20, plus others.

The Mod Electronics 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.

Item ID:
Input Impedance:
Number Of Springs:
Output Impedance:
Tank Length:
RoHS Compliant
Product Measurements by Type
Connectorsinput grounded, output grounded
Decay Timemedium (1.75 to 3.0 s)
Grommet Hole Diameter0.2 in.
Input Impedance10 Ω
Item Height1.5 in.
Item Length9.25 in.
Item Width3.38 in.
Mounting Hole Center to Center A8.56 in.
Mounting Hole Center to Center B2.81 in.
Mounting Planehorizontal, open side down
Output Impedance (Zout)2.575 kΩ
Thickness0.04 in.
Packaging Information
Packaging Dimensions9.3 in. × 3.4 in. × 1.6 in.
Weight (Packaging)0.66 lbs.

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Questions and Answers

Click each question to see its answers.
Asked by Anonymous on July 12th, 2016.
Matt H
July 12th, 2016
We are not sure if this will work with your Mesa Boogie. You need to find out what reverb tank you currenty have. The second and third character in a reverb tank number designate the input and output impedance. You need to make sure you pick a tank with the right impedance. For more info please visit our article on reverb tanks here:
Asked by Anonymous on April 6th, 2017.
Matt H
April 6th, 2017
Our understand is as long as the second and third character are the same, you can swap tanks to get difference specs.
Asked by Anonymous on April 6th, 2017.
Matt H
April 6th, 2017
If your amp does not contain a reverb circuit then the tank can not be added without extensive modification. I would suggest contacting the builder to see if this is a viable option.
Asked by Anonymous on June 24th, 2017.
Matt H
June 28th, 2017
According to Fender you need an 8EB2C1B.
Asked by Anonymous on July 11th, 2017.
Matt H
July 11th, 2017
We are unsure if this will work in your Dr. Z but we have some pointers to help you out. Always pay close attention to the series of letters and numbers associated with each reverb tank. In this case 8AB2A1B. If these numbers match your existing tank then this replacement will be compatible. You may want to contact Dr Z directly for tank options.
Asked by Anonymous on October 4th, 2017.
Matt H
October 5th, 2017
Yes the 8AB2A1B is compatible with your BS3AB2A1B.
Asked by Anonymous on September 6th, 2021.
September 7th, 2021
Staff Member
The input impedance of an 8AB2A1B tank is 10Ω while the stock tank for a Blues Jr. (8EB2C1B) has an input impedance of 800Ω. The issues you are experiencing are likely due to the wrong tank being used in that amp.

Product Reviews

4.67 out of 5 based on 3 reviews
Timscubparts - January 6th, 2023
4 out of 5

My reverb was not sounding very good so I bought this. I installed it and had screeching feedback when I turned it up past five. I guess that is just a problem you can have. Amplified Parts responded to my problem and said a return could be arranged. I removed the reverb from the cabinet. Fortunately the cables were long enough to connect it outside the cabinet and it sounds much, much better than my old reverb. It’s not an ideal situation but one I can live with.

Phillip Keller - February 7th, 2020
5 out of 5

I haven't used this tank yet but the last one I bought worked great so I am sure there will be no problems with this one. I will continue to purchase parts from AmplifiedParts.

Bill McDonald - December 19th, 2019
5 out of 5

I placed this order on the 4th of December and it arrived in New Zealand 2 weeks later - I'm very impressed with this delivery time. I'm using this reverb spring to build a stand-alone tube reverb unit inside a Fender 15G combo box - no photo's yet sorry. I recommend the parts and service from Amplified Parts and will be shopping again soon.