Reverb Tank - Mod® 9AB3C1B, Long Decay, 3-Spring

Reverb Tank - Mod® 9AB3C1B, Long Decay, 3-Spring

Mod Electronics
Reverb Tank - Mod® 9AB3C1B, Long Decay, 3-Spring image 1
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In Stock
  • Replaces: 9AB3C1B
  • Solid, sturdy construction
  • Type: Long (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

Compatible amps include select Fender®, Hughes & Kettner, Marshall™, Ampeg, Crate, Mesa Boogie, Guytron, Rocktron, DOD, Summit Audio, and Smokey amp models, 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 insulated, output grounded
Decay Timelong (2.75 to 4.0 s)
Grommet Hole Diameter0.2 in.
Input Impedance10 Ω
Item Height1.5 in.
Item Length16.75 in.
Item Width4.25 in.
Mounting Hole Center to Center A8.75 in.
Mounting Hole Center to Center B3.75 in.
Mounting Planehorizontal, open side down
Output Impedance (Zout)2.575 kΩ
Thickness0.04 in.
Packaging Information
Packaging Dimensions17 in. × 5 in. × 3 in.
Weight (Packaging)1.75 lbs.

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Specifications, Files, and Documents

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Questions and Answers

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Asked by Anonymous on February 2nd, 2018.
Matt H.
February 2nd, 2018
Staff Member
Typically the Vox AC30's take a 9EB2C1B.
April 20th, 2018
Staff Member
Yes, it will. It has a longer decay than the 9EB2C1B.
Asked by Anonymous on March 18th, 2017.
Matt H.
March 22nd, 2017
Staff Member
The mounting plane for this tank would be horizontal open side down.
Asked by Anonymous on November 30th, 2017.
Matt H.
November 30th, 2017
Staff Member
The tank in this kit is a 9AB3C1B and is a long tank (16.75").
Asked by Anonymous on February 2nd, 2018.
Matt H.
February 2nd, 2018
Staff Member
The 4AB3C1B and 9AB3C1B are compatible with each other.
Asked by Anonymous on August 17th, 2018.
August 17th, 2018
Staff Member
We wouldn't advise using a tank that has different insulation points and input and output impedances. We do carry a 8AB2A1B in both the MOD and Accutronics brand that you can view here: MOD Tank Accutronics Tank:
Asked by Anonymous on December 11th, 2018.
December 11th, 2018
Staff Member
This appears to be a different tank than the one in question. The most important specs that are required are the input and output impedance. If your amp has a 10 Ohm input and a 2,575 ohm output impedance, this should work for your amp.
Asked by Anonymous on July 7th, 2019.
July 9th, 2019
Staff Member
The stock tank used in that amp is a 4AB3C1B, and this tank is the same in every specification other than the third spring and the slightly differing input and output impedances. This should be compatible with the amp in question, but will not be the exact replacement.
Asked by [email protected] on September 24th, 2019.
September 24th, 2019
Staff Member
This reverb tank will work the same as a 4AB3C1B and should be compatible with any transformer used with a 4AB3C1B tank.

Product Reviews

5.00 out of 5 based on 1 reviews
charles croke - July 15th, 2018
5 out of 5

Very big Improvement