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Series of high-performance, mono and multi-channel Class D amplifiers 

with Clari-Fi

™

 Music Restoration Technology

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. 

Features

  Bluetooth

®

 audio streaming and 

telephony support

  Clari-Fi

™

 audio restoration technology

  Party Mode wireless pairing
  Cabin-mounted control panel
  Class D amplification
  Full-range line outputs
  Upgradable firmware 
  ADAS Input

Series of high-performance, mono and multi-channel Class D amplifiers 

with Clari-Fi

™

 Music Restoration Technology

®

 word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and 

any  use  of  such  marks  by  HARMAN  International  Industries,  Incorporated  is  under  license. 
Other trademarks and trade names are those of their respective owners.

Product specifications: 

GTR-102

High Performance 2-Channel Full Range Car Audio Power Amplifier

 

Max Power: 700W Peak 

 

Power Output, 4Ω: 100Wrms x 2, <0.1% THD+N

 

Power Output, 2Ω: 120Wrms x 2, <0.1% THD+N

 

Power Output, 4Ω Bridged: 240Wrms x 1, <0.3% THD+N

 

Signal-to-Noise Ratio: >75dB (ref 1W output @ 4Ω)

 

Bluetooth

®

 Audio Streaming

 

Clari-fi

™

 Music Restoration Technology

 

Party Mode allows sharing of streaming content

 

Cabin Controls and Telephone Integration

 

High Efficiency, Low Distortion Class D Design

GTR-104

High Performance 4-Channel Full Range Car Audio Power Amplifier

 

Max Power: 1500W Peak

 

Power Output, 4Ω: 100Wrms x 4, <0.1% THD+N

 

Power Output, 2Ω: 120Wrms x 4, <0.1% THD+N

 

Power Output, 4Ω Bridged: 240Wrms x 2, <0.3% THD+N

 

Signal-to-Noise Ratio: >75dB (ref 1 W output @ 4Ω)

 

Bluetooth

®

 Audio Streaming

 

Clari-fi

™

 Music Restoration Technology

 

Party Mode allows sharing of streaming content

 

Cabin Controls and Telephone Integration

 

High Efficiency, Low Distortion Class D Design

GTR-601

High Performance Mono Car Audio Subwoofer Amplifier

 

Max Power: 1500W Peak

 

Power Output, 2Ω: 600Wrms x 1, <0.1% THD+N

 

Power Output, 4Ω: 380Wrms x 1, <0.1% THD+N

 

Signal-to-Noise Ratio: >80dB (ref 1W output @ 2Ω)

 

High-Efficiency, Low Distortion Class D Design

 

Noise-Rejecting Differential Inputs

 

Active LPF, variable 32 – 320Hz

 

Variable Line-Level and Speaker-Level Inputs (0.2 to 20V input range)

 

GTR-1001

High Performance Mono Car Audio Subwoofer Amplifier

 

Max Power: 2600W Peak

 

Power Output, 2Ω: 1000Wrms x 1, <0.1% THD+N

 

Power Output, 4Ω: 700Wrms x 1, <0.1% THD+N

 

Signal-to-Noise Ratio: >80dB (ref 1W output @ 2Ω)

 

High-Efficiency, Low Distortion Class D Design

 

Noise-Rejecting Differential Inputs

 

Active LPF, variable 32 – 320Hz

 

Variable Line-Level and Speaker-Level Inputs (0.2 to 20V input range)

GTR-7535

High Performance 5-Channel Car Audio System Amplifier

 

Max Power: 2300W Peak

 

Full Range Channels

 

Power Output, 4Ω: 75Wrms x 4, <0.1% THD+N

 

Power Output, 2Ω: 100Wrms x 4, <0.1% THD+N

 

Power Output, 4Ω Bridged: 200Wrms x 2, <0.3% THD+N

 

Signal-to-Noise Ratio: >75dB (ref 1W output @ 4Ω)

  Subwoofer Channel

 

Power Output, 2Ω: 350Wrms x 1, <0.1% THD+N

 

Power Output, 4Ω: 200Wrms x 1, <0.1% THD+N

 

Signal-to-Noise Ratio: >80dB (ref 1W output @ 2Ω)

 

Bluetooth

®

 Audio Streaming

 

Clari-fi

™

 Music Restoration Technology

 

Party Mode allows sharing of streaming content

 

Cabin Controls and Telephone Integration

 

High Efficiency, Low Distortion Class D Design

Bluetooth

®

 audio streaming and telephony support

The three full-range, multi-channel GTR amplifiers (102, 104 and 7535 models) feature Bluetooth

®

 

connectivity for wireless audio streaming from phones and other devices. You can receive phone calls 
through your car audio system, just by touching a button on an included control panel.

Clari-Fi

™

 audio restoration technology

Clari-Fi

™

, a proprietary DSP technology, is incorporated in the GTR-102, GTR-104 and GTR-7535 

amplifiers, analyzes music files and improves highly compressed digital music files in real time. A predictive 
algorithm restores audio content that is discarded in the compression process. Clari-Fi

™

 works with all 

playback devices and audio sources. It extends high-frequency bandwidth, restores the natural warmth of 
vocals and widens the sound stage. In short, Clari-Fi

™

 gives your digital music back its soul.

Party Mode wireless pairing
The GTR-102, GTR-104 and GTR-7535 amplifiers offer Party Mode, a multi-pairing capability that enables 
Bluetooth

®

 devices to stream audio individually. When Party Mode is selected from the cabin-mounted 

control panel, anyone in the car can drive the music.

Cabin-mounted control panel

The GTR-102, GTR-104 and GTR-7535 multi-channel amps come with a wired control panel that 
incorporates an omni-directional microphone and puts a range of functions at your fingertips. You can 
activate Bluetooth

®

 pairings, accept and end phone calls, select Party Mode and cancel Clari-Fi

™

. 

Class D amplification

Every GTR amplifier, including the full-range models, is a Class D. These high-efficiency, low-heat amps 
generate a lot of power without drawing much current, and feature small footprints. 

Full-range line outputs

The full-range GTR amplifiers (GTR-102, GTR-104 and GTR-7535) include full-range line outputs. 
This enables them to pass the audio signal to additional amps that power subwoofers, increasing your 
system configuration options.

Upgradable firmware 

GTR amplifiers incorporate a mini-USB port that enables you to easily upgrade firmware.

ADAS Input

The full range GTR amps feature an ADAS input which overrides the audio signal when connected to ADAS 
accessories.  In addition, ADAS alert routing location can be assigned during amplifier setup using the 
panel mounted control.

What’s in the box

1 amplifier
1 cabin-mounted control panel (GTR-102, GTR-104 and GTR-7535 only)
2 spare fuses
Owner’s manual

ANT

Audio Signal:

Power Signal:

Control Signal:

BM153

oscillator

MCUUART

MIC

MCLK

BM153

DSP

WM8281

I2SforMusic

LINEOUTPUT

upgrade

MCLK

AnalogforSpeech

DIF

WM8281

L

R

HI*2

MCU

SPI

MCUUART

LPF

L

R

OP

OP

OP

ADC*2
FOR LCD

GAIN

DIF

DIF

SW

MCU

STM32F103C8

128K(105Ԩ)

ADAS

4Channel

AMP

S25FL132K

0XMFI011

SPI

Crossover

SPEAKER*4

FORLCD

control

box

Audio

DET(6V)

AudioDET

*4

ADAS

DCͲDC

3.3VMCU

SW

LDO

3.3VDSP

REMout

Rem in

MCU(TBD)

(105Ԩ)

HIlevelRem

Controlbox Rem

CD4053*2

Rotate
Switch

protection

1.2VDSP

Secondsidepower

4

10minnoBTconnectandsignalinputwillintostandby

Power

+12V

AMP

OP

Rem

SW

3.3VBT

Remotein

Remoteout

Rem In

Primarysidepower

1

2

3

4

A

B

C

D

4

3

2

1

D

C

B

A

BT_AR_P

BT_AR_N

BT_AL_P

BT_AL_N

SGND

SGND

SGND

SGND

SGND

SGND

SGND

FL_DSP_INP

FL_DSP_INN

FR_DSP_INP

FR_DSP_INN

PRE OUT3 FL

PRE OUT3 FR

SGND

SGND

RST

LDOENA

SGND

SGND

SGND

SGND

SGND

CIF1MISO

CIF1MODE

CIF1ADDR

BT_DSP_BCLK

BT_DSP_LRCLK

BT_DSP_DAO

CIF1SCLK

1.8V

3.3V

CIF1MOSI

R169

0R

R172

0R

R170
0R

R173
0R

R171
0R

C137

226P

R177
0R

R176

0R

C138

226P

C139

226P

C140

226P

R159

10K

R160

0R

R158

0R

6

5

7

U18B

BA4560

Fr/4-input

R166

10K

2

3

1

8

4

U7A

BA4560

R167

0R

1

2

R165

0R

Fr/4-input

DSP/R

C123

10uF/25V

C122
101P

R155
1.1k

R154
1K

1

2

3

VR2A
B10K

C121
101

6

5

7

U7B
BA4560

-12V

+12V

K

2

3

K

1

D2

BAV99

+1.8V

-1.8V

DSP/L

C128

10uF/25V

C127

101P

R162

1.1k

R161
1K

4

5

6

VR2B
B10K

C126
101

2

3

1

8

4

U18A
BA4560

-12V

+12V

K

2

3

K

1

D3

BAV99

+1.8V

-1.8V

R157

10K

R164

10K

FL_DSP_INP
FL_DSP_INN

FR_DSP_INP

FR_DSP_INN

R54t

1K

R55t

1K

C29t
105P

C28t
105P

+12V

-12V

-1.8V

+1.8V

DSP῵㒘

AGND

1

BT

_

A

R_

N

2

BT

_

A

R_

P

3

BT

_

A

L

_

P

5

BT

_

A

L

_

N

6

AGND

4

AGND

7

RR_DSP_INN

8

RR_DSP_INP

9

RL_DSP_INP

12

RL_DSP_INN

11

AGND

10

AGND

13

FL_DSP_INN

14

FL_DSP_INP

15

FR_DSP_INP

17

FR_DSP_INN

18

AGND

19

AGND

16

PREOUT3FR

20

PREOUT3FL

21

AGND

22

HP

OU

T2

R

R

23

HP

OUT2R

L

24

AGND

25

RST

26

LDOENA

27

AGND

28

CIF1MISO

29

CIF1MODE

30

AGND

31

CIF1ADDR

32

AGND

33

BT_DSP_BCLK

34

BT_DSP_LRCLK

35

BT_DSP_DAO

36

AGND

37

CIF1MOS1

38

CIF1SCLK

39

AGND

40

3.3V

41

1.8V

42

DGND

43

U20
M8281

to/7-PRE

D10t
1.8V

D9t
1.8V

C60
106

C59
106

R174
4.7K

R175

4.7K

SGND

A

B

C129
107P

C130
107P