Wired Bass Remote Controller for JBL GTO Series Amplifiers


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This item has been discontinued

But you may be interested in the newest model that's available.

rbc thumbnail

JBL RBC Bass Knob

OUR PRICE: $49.95

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Control Your Bass

The GTO-RBC is an optional wired remote volume control for the GTO-EZ Series subwoofers that allows easy adjustments of the bass/subwoofer levels from the vehicle’s front seat. The remote bass control is simple to connect to the GTO subwoofer amplifier via a telephone-style plug jack, and can be mounted in a variety of positions to suit your specific vehicle and preferences.

The Sound of quality

Sonic Electronix, one of the leaders in car audio, recently visited Harman, the premium global audio and infotainment group, at their research and development locations in Northridge, California and Detroit, Michigan. The purpose of these visits was to utilize and combine the powerful brand of Harman and the industry leading knowledge behind Sonic Electronix to begin working together on developing future car audio projects.

General Features:

  • Wired Remote Bass Volume Control for JBL GTO-EZ Series
  • Allows easy adjustments of the bass/subwoofer levels from the vehicle's front seat
  • Simple to connect to GTO amplifiers with a telephone-style jack (RJ-11)
  • Works with:
  • Can be mounted in a variety of positions to suit your specific vehicle and preferences
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Product History:

JBL RBC thumbnail
(newest, current model)
JBL GTO-RBC thumbnail
(previous model, replaced by JBL RBC Bass Knob)

General Features

Primary Color
This is the main color of the item.
This is the color of the illuminated LED lights on the unit.
Connection Type
How the unit is connected to its source to send and receive information and data.

On some items such as wire or cables, this specifies how the cables connect to transfer the signals.

1/4" Phone Jack
Dash Mountable
Many items and accessories have the option to be mounted to the dash. This makes those items easy to reach and accessible.
Many items and accessories are universal. These pieces are not brand specific and are compatible with all, or most brands.

For example, a universal television remote will work with all brands of televisions.

An item that is not universal is made to specifically work with one particular brand.


Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating

Pound Me


Works Well, I like it!

September 22, 2014

Works like it is suppose to work. If the dial is turned all the way down the sub is off completely so it has good range. Nice and small, but my only complaint is the size of the knob, very small. I wish the knob was a little bigger. Other than that it works well. I can adjust the bass level through my unit, but that is cumbersome to do while driving, this makes things easy. really like it.

22 of 27 found this helpful

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St. Louis, Missouri

Dude, it's a bass knob.

March 21, 2014

It works exactly as it should. Factory sealed, everything that you need is there. No issues.

The light's a little bright.

18 of 22 found this helpful

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Yorba Linda, CA

Verified Purchase
A must have if you own any of the GTO amps

July 13, 2015

Works great, though a little expensive and should come with the amp itself. Only complaint is that the power led is really bright, I solved that by mounting it inside my center console.

13 of 16 found this helpful

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Daytona Beach, FL

Verified Purchase
Control the bass

September 11, 2015

Make sure you order the RBC when you order your JBL GTO amp so you don't have to wait to install your amp as the RBC doesn't come with it! It works good to turn down the bass when coming into the neighborhood so as not to make all the neighbors mad.

4 of 5 found this helpful

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Browse 6 questions and 18 answers
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Why did you choose this?
Sonic Electronix Store
It provides convenience when you want to control the sub level without having to go into the trunk.
Zach V on Oct 7, 2015
Need this To go with GTO series amp.
Kevin G on Aug 9, 2015
easier to control bass without messing with amp
Nick R on Sep 24, 2015
Ease of bass adjustment.
Joel M on May 7, 2015
What are the dimensions of this? I need to know where I can hide it. Thanks.
Marc T on Sep 6, 2014
Best Answer: The mounting plate is 2" wide and 1 1/2" deep. The face is just under 2" wide and 1" tall. You need to make sure you have room for the cord to come out the back of the unit. The cord feels like standard telephone cord and is very flexible.
Reply · Report · Greg C on Sep 8, 2014
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Will this control work on an Infinity Basslink Unit?
A shopper on Jul 6, 2015
Best Answer: No, it will only work with jbl gto amps
Reply · Report · Benjamin B on Jul 6, 2015
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Is this unit mountable without the case, i.e. drill hole, mount from behind, only exposing the knob itself? Using with GTO5EZ amp.
Andrew on Jun 13, 2015
Best Answer: Hey Andrew, you can dissemble it, it has a small circuit board inside, it looks fragile outside the case with no room to drill into it with destroying the PCB electrical connections. You can mount it still in the case but the knob only extends about 5/16 of an inch outside of the case so you would have to find a way to extend the shaft.
Reply (1) · Report · Jeremy M on Jun 13, 2015
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Will this work on an SSL DG2800 amplifier?
A shopper on May 12, 2015
Best Answer: No.

If the manufacture's parts department cannot assist you, then you may want to consider a universal level control, like the NVX XBRC .

Reply · Report · Rick MStaff on May 13, 2015
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estoy interesado en el control de bajo de subwoofer quisiera saber ¿cuanto me sale el envio a la ciudad de villahermosa tabasco, mexico?
A shopper on Feb 9, 2015
Best Answer: usted puede acceder a una cita a sí mismo mediante la adición de cada artículo a su carrito de compras. A partir de ahí, si introduce su código postal y / o el país de destino dentro de la página que la información también se comunicará con usted.

Te invitamos a visitar su cesta de la compra a través del siguiente enlace:


Por favor, háganos saber si usted tiene alguna duda. Esperamos con interés su próxima compra!
Reply · Report · Customer SStaff on Feb 9, 2015
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Product Summary


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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: JBL GTO-RBC