JBL

GTR-104

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High-performance Clari-Fi™ Enhanced 4-channel full-range car audio power amplifier

£379.99379.99 each £419.99 Save 10%
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AMPLIFIERS GTR-104 GTR-7535 GTR-601 GTR-1001
Number of Channels/Type 4 Channels 5 Channels Mono / Subwoofer Mono / Subwoofer
4-Ohm Power Output 100W rms x 4, <1.0% THD + N 75W rms x 4, <1.0% THD + N 380W rms x 4, <1.0% THD + N 700W rms x 4, <1.0% THD + N
2-Ohm Power Output 120W rms x 4, <1.0% THD + N 100W rms x 4, <1.0% THD + N 600W rms x 4, <1.0% THD + N 1000W rms x 4, <1.0% THD + N
Bridged Power Output 240W rms x 4, <1.0% THD + N 200W rms x 4, <1.0% THD + N - -
Total Peak Power Output 1500W 2300W 1500W 2800W
Signal-to-Noise Ratio >75db >75db >50db >80db >80db
Frequency Response 10-100kHz 10-100k (main) 10-320 (sub) 15Hz-320Hz 15Hz-320Hz
Input Sensitivity 200mV-20V 200mV-20V 200mV-20V 200mV-20V
Variable Electronic Crossover Yes Yes Yes Yes
Variable Bass Boost Bass EQ Yes Yes Bass EQ
Input Connections High & low-level (RCA) High & low-level (RCA) High & low-level (RCA) High & low-level (RCA)
Speaker Connections 4 5 2 2
Signal Output Connections Yes No No No
Dimensions (L x W x H) 10-1/2" x 7-1/8" x 2-3/16"
(266mm x 180mm x 55mm)
13-1/4" x 7-1/8" x 2-3/16"
(335.3mm x 179.6mm x 54.2mm)
10-1/2" x 7-1/8" x 2-3/16"
(265.3mm x 179.6mm x 54.2mm)
13-1/4" x 7-1/8" x 2-3/16"
(335.3mm x 179.6mm x 54.2mm))
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GTR Stadium Amplifiers

Amplifiers with a small footprint and big impact. GTR mono and full-range, multi-channel amplifiers deliver the efficiency and power you expect from Class D amps—and the performance you expect from JBL. Each model in the lineup will accept both high-level or low-level inputs, allowing the JBL Stadium amplifiers to be added to virtually any car audio system, including factory installed systems. The 2-, 4- and 5-channel amplifiers offer Bluetooth® audio streaming, exclusive Clari-Fi™ music restoration technology that analyzes and improves the audio quality of compressed files in real time, a multi-pairing Party Mode that lets anyone in the car stream music, and a cabin-mounted control panel. GTR amplifiers give you the power to shape your car audio experience in new ways.

Item# GTR-104

General Specifications

Peak Power 1500W

Audio Specifications

2-Ohm Power Output 120Wrms x 4, <0.1% THD+N
Signal-to-Noise Ratio >75dB (ref 1 W output @ 4 )
4-Ohm Power Output 100Wrms x 4, <0.1% THD+N
Click here for a complete list of all specs for this product

Spec Sheet (EN)

997 KB
  • 1 amplifier
  • 1 cabin-mounted control panel
  • 2 spare fuses
  • Owner’s manual

Search Result For ""

What speakers (two 6x9 and two 6.5in) would you recommend to be used with this amp?

Asked by: rando1
I highly recommend the GTO series speakers. I have them installed in my car and they sound way above their output grade compared to other speakers I have installed in the past. My speakers are the same size as yours.
Answered by: ShatteredMJ
Date published: 2018-02-19

I currently have a Club 704 and it can be bridged into 2 channels. I do NOT see that as an option with the GTR 104. Is that just possibly an omission on this website?

Asked by: FiveHundred
The JBL GTR 104 is a 4 channel amplifier and it is possible to do a 2-channel bridged operation. You may connect one speaker&rsquo;s (+) lead to the Front L+ terminal, and the (-) lead to the Front R- terminal. Connect the other speaker&rsquo;s + lead to the Rear L+ terminal, and the - lead to the Rear R- terminal. While for Mono bridge, you have to connect the speaker&rsquo;s positive (+) lead to the L+ terminal, and the negative (-) lead to the R- terminal.
Answered by: Nick F
Date published: 2018-02-12

is the GTR-104 CEA2006 complient?

Asked by: frankdanger
Yes, all of our car audio amplifiers are CEA 2006 rated.
Answered by: Steven M
Date published: 2018-01-26

Hi Is it possible to use bluetooth alone to play music out to the speakers, without connecting to the car main unit ? Can a SUB amplifier be connected directly from this if you only play music via bluetooth?

Asked by: Ricardo26
Yes, you can work with this amplifier thru BT even without a direct connection to the car main unit. The amplifier is also has a PRE OUT connection for a secondary amplifier.
Answered by: Mel at Customer Service
Date published: 2017-12-02

Hi. Recently got GTR104 and connected a JBL 3 way power series speakers with a gauge 8 power cable. The HU is a Sony 712BT. Question is Why is the amp auto shutting off when HU is in low volume like 12 below? Need to power it on on the remote again.

Asked by: Poringdrops
Turn the input on the amp down, considerably, and turn up the volume of the head unit, to compensate, and the unit will stay on, and sound better as the signal to noise ratio will be much better.
Answered by: Mark at Customer Service
Date published: 2017-12-02

What Bluetooth codecs does this amp support? &nbsp;Specifically, does it support AAC? &nbsp;AptX?

Asked by: Stuartb
The JBL GTR-104 is a standard SBC A2DP Bluetooth device. It does not support APTX nor AAC.
Answered by: Steven M
Date published: 2018-01-02

Will this amplifier work any better with an iPhone X (bluetooth 5.0)than an iPhone 5s.

Asked by: Johnny Bluetoooth
You might find the answer to your question in our Product Support FAQ and knowledge base sections. The link is located at the top of this page. If this does not answer your question,Please submit a case request at https://www.jbl.com/support-contact.html and the Customer Service Team will be more than happy to assist you.
Answered by: Ren at Customer Service
Date published: 2017-12-02

I want to run a set of Stadium 860c's into 2-channel bridged mode; however, if I'm correct the 104 is only 4-ohm stable in bridged mode. I would like to have 240W running them as opposed to 120W. I the 104 is capable of driving this load safely. Thanks.

Asked by: FiveHundred
We would like to work with you directly to help you with your issue. Please submit a case request at https://www.jbl.com/support-contact.html and the Customer Service Team will be more than happy to assist you.
Answered by: Mario at Customer service
Date published: 2018-02-16
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