To view vehicle information click on the cars names and the information will expand.

Porsche 911 (996) and Boxster (986)

Production years 1997 - 2004


1997 to 2004 model Porsche 911 and Boxsters have two original audio systems.

The earlier cars had a system similar to an Audi, the speakers are amplified and the head unit suppliers the audio to the amplifier via a low level signal from the Mini ISO connector. These cars require high to low level adapters to fit new head units or handsfree kits.

Later models use a fibre optic network to send the audio signal from the head unit to the amplifier. For these cars we have the 23-245 fibre optic interface available.

Generally the CD22/CDR22 original units have the Audi style system, CDR23 units can be either low level like the Audis or fibre optic. It is best to either find the amplifier under the front bonnet and look for fibre optic cables, or remove the head unit and look at the connection on the back.

Here is a picture of a car using a low level signal in the Mini ISO yellow connector to connect to the amplifier, note that all six positions are populated. These wires are the positive audio signals for front left, front right, rear left and rear right speakers, a common speaker negative and the amplifier turn on signal. Models with this set up will need to use the 20-281 amplifier interface.
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Here is a picture of a head unit using the fibre optic connection. Note that there are only four wires in the yellow Mini ISO, unlike six in the older version. These four wires are data wires, they do not carry any audio signal. Models with this fibre optic system require our 23-245 fibre optic amplifier interface to work. This not only connects to the amplifier but provides a switched live direct from the fuse box.
 

There are some cars with the very basic audio option, these have a traditional speaker ISO connector with the head unit driving the speakers directly. No audio adapters are needed for these cars.

Porsche 911 997
Production years 2004-2012

The Porsche 911 cars have a variety of amplified audio options, depending on what is in the car affects what fitting parts are required when installing a new stereo.
The information below describes the different original audio equipment that is in these cars, this information is needed to make sure the correct parts are used when fitting a new stereo.


2004 - 2009 models

Unlike the Boxster and Cayman, the 911 cars were all fitted with the high end PCM2 and 2.1 head units. These units have ISO connectors at the rear.

There are two types of audio systems in 911s, ASK amplifier, known as the Sound Package Plus system (SPP) and Bose premium amplifier. The ASK amplifier has audio supplied to it from the head unit from the normal speaker ISO connector, a +12v feed turns on the amplifier. The Bose amplifier has a fibre optic connection from the head unit.

The image below shows the connection at the radio for cars with the ASK and Bose amplifiers.

The left image is a car with an ASK amplifier, all 4 channels are populated in the speaker ISO and there is an amplifier turn on wire (thin black with red stripe) in the power ISO connector. The image to the right has a Bose amplifier, there are no speaker wires present, the audio is sent to the amplifier via the orange fibre optic cables. Note: the car with the ASK amplifier also has fibre optic cables, these connect the head unit to the CD changer, they do not carry audio to the ASK amplifier.


The type of amplifier can be identified by looking at the wiring behind the radio, as per above images, or by looking at the door speakers. Cars with Bose amplifiers will have Bose branding on the speaker grills. See the image below.



2009 - 2012 models

Like the earlier version 911, the 2009 to 2012 models are only fitted with the high end PCM 3 head units, the CDR30 unit is not an option like the Boxster and Cayman. The PCM3 units have a quadlock connector at the rear instead of ISO connectors like the earlier model. They have the same options of ASK and Bose amplified audio systems.

The type of amp can be identified in the same way as the earlier model, either by the Bose branding on the speakers grills or by looking at the connectors at the back of the radio.

Below shows a car with ASK amplifier (image 1) and a car with Bose amplifier (image 2). Note how the car with an ASK amplifier has speaker wires present in the quadlock connector and the car with Bose does not.


Porsche 911 997

Production years 2004 - 2012


2004 - 2009 models

Unlike the Boxster and Cayman, the 911 cars were all fitted with the high end PCM2 and 2.1 head units. These units have ISO connectors at the rear.

There are two types of audio systems in 911s, ASK amplifier known as the Sound Package Plus (SPP) and Bose amplifier. The ASK amplifier has audio supplied to it from the head unit from the normal speaker ISO connector, a +12v feed turns on the amplifier. The Bose amplifier has a fibre optic connection from the head unit.

The image below shows the connection at the radio for cars with the ASK and Bose amplifiers.

The left image is a car with an ASK amplifier, all 4 channels are populated in the speaker ISO and there is an amplifier turn on wire (thin black with red stripe) in the power ISO connector. The image to the right has a Bose amplifier, there are no speaker wires present, the audio is sent to the amplifier via the orange fibre optic cables. Note: the car with the ASK amplifier also has fibre optic cables, these connect the head unit to the CD changer, they do not carry audio to the ASK amplifier.


The type of amplifier can be identified by looking at the wiring behind the radio, as per above images, or by looking at the door speakers. Cars with Bose amplifiers will have Bose branding on the speaker grills. See the image below.



2009 - 2012 models

Like the earlier version 911, the 2009 to 2012 models are only fitted with the high end PCM 3 head units, the CDR30 unit is not an option like the Boxster and Cayman. The PCM3 units have a quadlock connector at the rear instead of ISO connectors like the earlier model. They have the same options of ASK and Bose amplified audio systems.

The type of amp can be identified in the same way as the earlier model, either by the Bose branding on the speakers grills or by looking at the connectors at the back of the radio.

Below shows a car with ASK amplifier (image 1) and a car with Bose amplifier (image 2). Note how the car with an ASK amplifier has speaker wires present in the quadlock connector and the car with Bose does not.


BMW 1 Series
E81 3 door hatchback, E82 2 door coupe, E87 5 door hatchback, E88 2 door convertible.

Production years 2004-2011


The BMW 1 series had a facelift to the dashboard in 2007, this facelift allowed for the possibility of fitting double DIN aftermarket head units.

Below shows the difference between the pre and post facelift dashboards.


The Peugeot 108 is a city car launched by French manufacturer Peugeot in March 2014 and went on sale in the United Kingdom in July 2014. It is related to the Citroën C1 and Toyota Aygo, sharing the chassis, engines, transmission, and electrics.

It was reported in November 2018 that the Peugeot 108, along with the Citroën C1, will be phased out in 2021, with Toyota taking full ownership of the plant in the Czech Republic, and the model will not be renewed.


Maximum mounting Depth of 150mm

Due to the shallowness of the original radio the maximum mounting depth of an aftermarket 2-DIN radio needs to be 70mm/80mm including plug at the bottom.

On L-Shaped devices with 1-DIN body at the top the maximum installation depth is 100mm/150mm including plug.

The Alfa Romeo 147 (Type 937) is a small family car produced by  Alfa Romeo from 2000 to 2010.

The 147 was facelifted at the end of 2004 with the addition of new front grills, headlights and an interior change on all models besides the GTA version.

The 147 was replaced by the Giulietta in May 2010.

No Double DIN solution is available.

No Double DIN solution is available.

No Double DIN solution is available.

No Double DIN solution is available.

No Double DIN solution is available.

No Double DIN solution is available.

No Double DIN solution is available.

BMW 3 Series E46

Production years 1999 - 2006

The E46 is the forth generation of the popular 3 series BMW car.


There are several options of original audio systems in these cars.

Basic Audio. The basic audio systems have a standard tape or CD player head unit in the dashboard. Some older models also have a basic small text screen based navigation display.
These basic setups will have a 17 way round pin connector at the back of the head unit.
Some cars with the basic head units will also have a Harman/Kardon amplifier.

Basic with Harman/Kardon. The Harman/Kardon amplifiers are turned on by a 12v switch signal. The head unit sends the audio to the amplifier via a low level (pre amplified) signal.
Fitting new head units or handsfree kits will require high to low level audio adapters.

Navigation screen head unit. Cars with original navigation screens have the radio tuner module in the rear of the car, it is behind the left hand panel in the boot. There are two types of tuners, one has the 17 way round pin connector and the other has the 40 way quadlock connector.
It is a 10-15 minute job to remove the panel in the boot and locate and identify which type of tuner is in the car. Pictures of the units are below.

Navigation and round pin tuner. The cars with round pin tuners work on the same basis as the cars with the basic head unit and basic head unit with Harman/Kardon. The main difference is that the tuner unit and round pin connection is in the boot so extensions from rear to front are required.

Image of the round pin tuner module. BM23.


Navigation and quadlock tuners. Like cars with the round pin tuners, cars with the quadlock tuners will require extensions from rear to front with the appropriate connectors.
Cars that have the quadlock tuners and Harman/Kardon amplifiers are more complicated. The amplifiers are digital (DSP) and therefore need to be bypassed in order to install a new after market head unit. The same wiring and extension leads are required but no audio will be supplied to the speakers using these parts.

Image of the quadlock tuner module. BM54.


 F30 Entertainment and Communication

The speaker systems in thee F30 are available in 3 different specification levels:

Base (Stereo) – the lowest-level BMW sound system, unavailable in the US and Canada. It consists of 6 speakers (4x Midrange, 2x Underseat Subwoofer) which are powered by the iDrive head unit with no additional BMW amplifier.


Hi-Fi – an option one level above the Base system. Hi-Fi has 9 speakers (5x Midrange, 3x Tweeter, 2x Hi-Fi Underseat Woofer) and an 8-channel amplifier with digital equalising. Only 7 of the 8 channels are used


Harman Kardon (S688A) – the top-tier BMW audio system available in the 3-Series. It contains 16 Harman Kardon BMW speakers (7x Midrange, 7x Tweeter, 2x Harman Kardon Underseat Woofer) and a 10-channel amplifier connected to the head unit with fiber optic cable. (NOTE: The Top HiFi system has a digital 10-channel amplifier. However, only 9 of the 10 channels are used.)


Base/ Basic Audio

This is the lowest-level BMW sound system, unavailable in the US and Canada. It consists of 6 speakers (4x Midrange, 2x Underseat Subwoofers) which are powered by the iDrive head unit with no additional BMW amplifier.


HiFi Sound Systems

This is an option one level above the Base system. This consists of 9 speakers and a seven-channel amplifier integrated into the loudspeaker system. The amplifier has no MOST bus connection and instead receives the switch-on signal via a separate line. Seperate speakers are installed in the HiFi system for the treble and mid-tone ranges.

The HiFi system also has a mid-range speaker positioned as a centre speaker.


Top HiFi (Harman Kardon) and 'MOST' Sound Systems

This is the top tier BMW sound system. It consists of 16 speakers in total, with a 9-channel amplifier incorporated into the Sound system. The AMP is a bus connection in Media Orientated System Transport (MOST)

The speaker panels are usually labelled with the 'Harman Kardon' lettering. For e.g. in the mirror triangles where the tweeters are stored (See Below)

Speaker panels labelled with the 'Harman Kardon' lettering, a tale-tale sign of a Top HiFi (MOST) system


The Top HiFi sound system is equipped with a load logic separator in the F30, meaning the amplifier electronics are supplied with a separate voltage line. 



The seventh generation of the BMW 3 Series range consists of the BMW G20 (sedan version) and BMW G21 (wagon version, marketed as 'Touring') compact executive cars. The G20/G21 has been in production since mid-October of 2018 and is often collectively referred to as the G20.


ABOUT BMW ID7/ MGU (MEDIA GRAPHIC UNIT)

BMW ID7 or MGU (Media Graphic Unit) is the 7th Generation of the BMW iDrive Systems. Introduced in 2018 with the X5 (G05) and 8-Series (G15) , The display and menus were adapted to the new system implementing a new iDrive interface (ID7). It consists of 5 widgets arranged on the left side of the screen. The interface is designed mostly for touch and gesture operation.


The ID7 Interface Setup consists of 5 widgets arranged on the left side of the screen (Pictured Above)

The ID7 features a screen of 10.25" or 12.3" diagonal, depending on the vehicle, and a redesigned iDrive Touch Controller.


Compatibility

The BMW ID7 or MGU (Media Graphic Unit) were introduced into the following BMW models

3-Series (G20)09/2018 - Present


7-Series (G11/G12 Facelift)
2020 - Present
8-Series (G14/G15)09/2018 - Present
X3 (G01)
2020 - Present
X5 (G05)09/2018 - Present
X7 (G07)2018 - Present
Z4 (G29)
09/2018 - Present
PLEASE NOTE: Due to some countries having different production months this timeline is not 100% guaranteed

Nissan 350Z

Production years 2003 - 2010


The Nissan 350Z have a facelift in 2006 which affects the radio fascia. It is a very minor difference in the fascias needed from the pre facelift to post facelift models.

The easiest way to tell if the car is the older or newer model is to look at the styling around the gear stick and the location of the hazard switch.

In the picture above you can see the different styling around the gear stick and the position change of the hazard switch.

The left image is of the 2003 - 2006 model, the hazard switch is positioned further back near the handbrake, the 2006 - 2010 model on the right has the hazard switch further forward on the dashboard located between the gear stick and below the climate controls.


Bose integration.
Most 350Z cars have factory fitted Bose audio systems. New equipment like head units and handsfree kits can be easily added to this system using high to low level adapters. The original head unit supplies the audio to the amplifier via a low level signal.

When fitting a new head unit, sometimes the audio sounds quieter than expected, this is normally caused by the new head unit having 2V preouts. Head units with 4V preouts will provide better audio. Another way to get better audio is to use an adapter lead for a non amplified car, use the ISO speaker outputs from the head unit and run the audio through a high to low level interface, this will give the best audio quality.


The Bose amplifier is turned on by a 12V switch signal.

This diagram shows the position of the amplifier turn on (AMP ON) pin. Use the 12V switch output from the new head unit (blue/white wire) to turn the amp on.

4 Series F32 Entertainment and Communication

The speaker systems in the F32 are available in 3 different specification levels:

Base (Stereo) – the lowest-level BMW sound system, unavailable in the US and Canada. It consists of 6 speakers (4x Midrange, 2x Underseat Subwoofer) which are powered by the iDrive head unit with no additional BMW amplifier.


Hi-Fi – an option one level above the Base system. Hi-Fi has 9 speakers (5x Midrange, 3x Tweeter, 2x Hi-Fi Underseat Woofer) and an 8-channel amplifier with digital equalising. Only 7 of the 8 channels are used


Harman Kardon – the top-tier BMW audio system available in the 3-Series. It contains 16 Harman Kardon BMW speakers (7x Midrange, 7x Tweeter, 2x Harman Kardon Underseat Woofer) and a 10-channel amplifier connected to the head unit with fiber optic cable. (NOTE: The Top HiFi system has a digital 10-channel amplifier. However, only 9 of the 10 channels are used.)


Base/ Basic Audio

This is the lowest-level BMW sound system, unavailable in the US and Canada. It consists of 6 speakers (4x Midrange, 2x Underseat Subwoofers) which are powered by the iDrive head unit with no additional BMW amplifier.


HiFi Sound Systems

This is an option one level above the Base system. This consists of 9 speakers and a seven-channel amplifier integrated into the loudspeaker system. The amplifier has no MOST bus connection and instead receives the switch-on signal via a separate line. Seperate speakers are installed in the HiFi system for the treble and mid-tone ranges.

The HiFi system also has a mid-range speaker positioned as a centre speaker.


Top HiFi (Harman Kardon) and 'MOST' Sound Systems

This is the top tier BMW sound system. It consists of 16 speakers in total, with a 9-channel amplifier incorporated into the Sound system. The AMP is a bus connection in Media Orientated System Transport (MOST)

The speaker panels are usually labelled with the 'Harman Kardon' lettering. For e.g. in the mirror triangles where the tweeters are stored (See Below)

Speaker panels labelled with the 'Harman Kardon' lettering, a tale-tale sign of a Top HiFi (MOST) system


The Top HiFi sound system is equipped with a load logic separator in the F32, meaning the amplifier electronics are supplied with a separate voltage line. 



Released in 2013, the Alfa Romeo 4C came with a standard Parrot radio in a single DIN slot with standardised ISO connections and a DIN antenna connection. Later in the production run in 2016, the radio was changed to an Alpine unit in the same single DIN slot and utilising the same connections, No ISO adapter or antenna is needed when fitting a radio with ISO connections, no matter what original radio is fitted.

it is not possible to fit an aftermarket head-unit to this car as the original screen contains vehicle information. No facia is available to change the radio. 

You can add an aftermarket camera to the original screen , upgrade the speakers or add an amplifier and subwoofer.

The facelifted 7-Series BMW models were unveiled on 16 January 2019 as 2020 model year cars.

Updates to the interior include a new 12.3-inch instrument cluster and a 10.25-inch infotainment screen. A new voice assistant is also added to the infotainment system along with the BMW iDrive system 7.0 with updated graphics and menus.


ABOUT BMW ID7/ MGU (MEDIA GRAPHIC UNIT)

BMW ID7 or MGU (Media Graphic Unit) is the 7th Generation of the BMW iDrive Systems. Introduced in 2018 with the X5 (G05) and 8-Series (G15) , The display and menus were adapted to the new system implementing a new iDrive interface (ID7). It consists of 5 widgets arranged on the left side of the screen. The interface is designed mostly for touch and gesture operation.


The ID7 Interface Setup consists of 5 widgets arranged on the left side of the screen (Pictured Above)

The ID7 features a screen of 10.25" or 12.3" diagonal, depending on the vehicle, and a redesigned iDrive Touch Controller.


Compatibility

The BMW ID7 or MGU (Media Graphic Unit) were introduced into the following BMW models

3-Series (G20)09/2018 - Present


7-Series (G11/G12 Facelift)
2020 - Present
8-Series (G14/G15)09/2018 - Present
X3 (G01)
2020 - Present
X5 (G05)09/2018 - Present
X7 (G07)2018 - Present
Z4 (G29)
09/2018 - Present
PLEASE NOTE: Due to some countries having different production months this timeline is not 100% guaranteed

The second-generation of the BMW 8 Series consists of the BMW G14 (convertible version), BMW G15 (two-door coupe version) grand tourers and BMW G16 (four-door "Gran Coupe" fastback sedan version) executive car. The G14/G15/G16 generation has been in production since 2018, and is often collectively referred to as the G15.

The 8-Series iDrive system consists of the MGU hardware (Media Graphics Unit) running the 7th generation of iDrive called BMW Operating System 7.0.


ABOUT BMW ID7/ MGU (MEDIA GRAPHIC UNIT)

BMW ID7 or MGU (Media Graphic Unit) is the 7th Generation of the BMW iDrive Systems. Introduced in 2018 with the X5 (G05) and 8-Series (G15) , The display and menus were adapted to the new system implementing a new iDrive interface (ID7). It consists of 5 widgets arranged on the left side of the screen. The interface is designed mostly for touch and gesture operation.


The ID7 Interface Setup consists of 5 widgets arranged on the left side of the screen (Pictured Above)

The ID7 features a screen of 10.25" or 12.3" diagonal, depending on the vehicle, and a redesigned iDrive Touch Controller.


Compatibility

The BMW ID7 or MGU (Media Graphic Unit) were introduced into the following BMW models

3-Series (G20)09/2018 - Present


7-Series (G11/G12 Facelift)
2020 - Present
8-Series (G14/G15)09/2018 - Present
X3 (G01)
2020 - Present
X5 (G05)09/2018 - Present
X7 (G07)2018 - Present
Z4 (G29)
09/2018 - Present
PLEASE NOTE: Due to some countries having different production months this timeline is not 100% guaranteed

No Double DIN solution is available.

Identifying your Saab

The Saab 9-3 and Saab 9-5 were both sold through two generations. In the Saab community they are known as OG (original generation) and NG (new generation) and there are also differences between facelifts in these generations.

The easiest way to tell which version you have is to check the year and the front of the car as they are all distinctively different.


It is not reasonably practical to fit an after market radio to a pre-facelift Saab 9-3 due to the way that the original system works.

The radio seen at the top of the dashboard is just a user interface that is connected with a fibre optic loop to the EHU, amplifier and CD changer. Breaking the fibre optic loop by removing any one original component will disable the indicator and other warning chimes, making the car not road legal in the UK.

There is no fascia available and no fitting kit available to replace the radio in the Saab 9-3 built between 2003 - 2006. We do offer speaker upgrades for this car.

Below is an example of the radio that cannot be changed. This is the top-spec navigation radio, but they also came equipped with a mono-chrome screen or a basic radio with no screen.


Identifying your Saab

The Saab 9-3 and Saab 9-5 were both sold through two generations. In the Saab community they are known as OG (original generation) and NG (new generation) and there are also differences between facelifts in these generations.

The easiest way to tell which version you have is to check the year and the front of the car as they are all distinctively different.


Identifying your Saab

The Saab 9-3 and Saab 9-5 were both sold through two generations. In the Saab community they are known as OG (original generation) and NG (new generation) and there are also differences between facelifts in these generations.

The easiest way to tell which version you have is to check the year and the front of the car as they are all distinctively different.


The Saab 9-4X was the final new car put into production by Saab. Developed under general motors on the same platform as the Cadillac SRX. The first 9-4X rolled off the production line in February 2011, the same month the General Motors sold Saab to Spyker. Spyker continued to pay General Motors to continue building the Saab 9-4X on the Cadillac SRX production line in Mexico throughout 2011, but then with Saab being sold again to NEVS, General Motors halted production in December 2011 to avoid a modern platform being available to a Chinese competitor. The last cars were registered in 2012 with a grand total of 811 cars produced.

With such a short production run, there is no aftermarket solutions to change the radio on this car.

MAKE SURE YOU HAVE THE CORRECT INTERFACE

The Saab 9-5 OG (1997-2006) had a number of different configurations that affects how the steering wheel controls work. We have five different interfaces available to cover all versions. Please check the above compatibility table carefully to make sure you have the correct interface for your car. If you are unsure on your car then check overleaf.

Pay particular attention if you have a 9-5 built between 2006-2010 with an automatic gearbox as you may also have the optional paddle shift, most often found on Vector and Aero models. These require different interfaces to cars with manual or automatic gearboxes without paddle shift. The paddles are labelled - and +.

Earlier models are not affected by paddle shift, all cars built between May 2003 and October 2006 use the 29-643 interface.

2006-2010 cars with paddle shift have the paddles above the radio steering wheel controls, at the top of the spokes.

All post facelift 9-5s with the basic Fujitsu 10 original radio (with the black and green display) use interface 29-UC-050-SAAB.

All Saab 9-3 OG (1998-2003) models use the 29-738 interface.


InterfaceCar Description
29-738 (SAB01)Saab 9-3 (98-03) and Saab 9-5 (97-02)
29-643 (SAB02)Saab 9-5 (02-06) Facelift 1
29-694.V2 (SAB03)Saab 9-5 (06-10) with Denso navigation and without paddle shift
29-742 (SAB02)Saab 9-5 (06-10) with Denso navigation and paddle gear shift
29-UC-050-SAABSaab 9-5 (06-10) with basic Fujitsu 10 original radio and Saab 9-3 (06-13)

Identifying your Saab

The Saab 9-3 and Saab 9-5 were both sold through two generations. In the Saab community they are known as OG (original generation) and NG (new generation) and there are also differences between facelifts in these generations.

The easiest way to tell which version you have is to check the year and the front of the car as they are all distinctively different.


MAKE SURE YOU HAVE THE CORRECT INTERFACE

The Saab 9-5 OG (1997-2006) had a number of different configurations that affects how the steering wheel controls work. We have five different interfaces available to cover all versions. Please check the above compatibility table carefully to make sure you have the correct interface for your car. If you are unsure on your car then check overleaf.

Pay particular attention if you have a 9-5 built between 2006-2010 with an automatic gearbox as you may also have the optional paddle shift, most often found on Vector and Aero models. These require different interfaces to cars with manual or automatic gearboxes without paddle shift. The paddles are labelled - and +.

Earlier models are not affected by paddle shift, all cars built between May 2003 and October 2006 use the 29-643 interface.

2006-2010 cars with paddle shift have the paddles above the radio steering wheel controls, at the top of the spokes.

All post facelift 9-5s with the basic Fujitsu 10 original radio (with the black and green display) use interface 29-UC-050-SAAB.

All Saab 9-3 OG (1998-2003) models use the 29-738 interface.


InterfaceCar Description
29-738 (SAB01)Saab 9-3 (98-03) and Saab 9-5 (97-02)
29-643 (SAB02)Saab 9-5 (02-06) Facelift 1
29-694.V2 (SAB03)Saab 9-5 (06-10) with Denso navigation and without paddle shift
29-742 (SAB02)Saab 9-5 (06-10) with Denso navigation and paddle gear shift
29-UC-050-SAABSaab 9-5 (06-10) with basic Fujitsu 10 original radio and Saab 9-3 (06-13)

Identifying your Saab

The Saab 9-3 and Saab 9-5 were both sold through two generations. In the Saab community they are known as OG (original generation) and NG (new generation) and there are also differences between facelifts in these generations.

The easiest way to tell which version you have is to check the year and the front of the car as they are all distinctively different.


Do I have a CDR31 or PCM3.1 System?

The difference of having PCM 3.1 or CDR 3.1 is the buttons in the units centre console.

If your system has CD/ AUX button and AM/FM buttons then you have a CDR 3.1/ CDR31