Reverb Tank - Mod® 9AB2A1B, Medium Decay, 3-Spring
- Replaces: 9AB2A1B
- Solid, sturdy construction
- Type: Long (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®models, select Vox® AC30 models, Engl® Screamer, Mesa Boogie® MK1,MK2,MK3,MK4,MK5, Maverick, Transatlantic 30, Blue Angel, Heartbreaker, Roadking II, Trem-O-Verb, DC Models, Express Models, Roadster, Lonestar,Electradyne, RA-100, Lonestar Special, 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.
| Connectors | input grounded, output grounded | |
| Decay Time | medium (1.75 to 3.0 s) | |
| Grommet Hole Diameter | 0.2 in. | |
| Input Impedance | 10 Ω | |
| Item Height | 1.5 in. | |
| Item Length | 16.75 in. | |
| Item Width | 4.25 in. | |
| Mounting Hole Center to Center A | 8.75 in. | |
| Mounting Hole Center to Center B | 3.75 in. | |
| Mounting Plane | horizontal, open side down | |
| Output Impedance (Zout) | 2.575 kΩ | |
| Springs | 3 | |
| Thickness | 0.04 in. |
| Packaging Dimensions | 17 in. × 5 in. × 3 in. | |
| Weight (Packaging) | 1.75 lbs. |
 Sound Sample - Drum Machine Clap | All Models |
| Sound Sample - Drum Machine Snare | All Models |
| Sound Sample - Quick Strum | All Models |
| Sound Sample - Staccato | All Models |
| Sound Sample - Sustained Chord | All Models |
| Sound Sample - Tremolo Chords | All Models |
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Product Reviews
You see this one a lot in MESA amps as well as some other well known brands. I prefer the sound of the MOD brand Reverb pans over the original Accutronics ones, it seems to have a better tone overall. You should give them a try sometime and see for yourself the difference!
Meh! The Mesa Boogie reverb could stand being upgraded to the longer decay tank. If you want to keep it original, this is as close as you will come, unless you can find an old Folded Line Gibbs tank. These seem more robust than the original Mesa tanks, which tend to crap out in the send or receive coils. I suspect it is the physical design of the head that subjects the tanks to physical vibration/abuse. Most techs h8 working on Mesa Boogie amps. To them, I say, "Wait until you crack open an Engl!" Then Mesa Boogie won't seem nearly as bad, but they are still a pain in the neck.