MAIN FEATURES
This interface converts the high level audio output of a new head unit to a low level pre amplified signal which will work with an amplifier.
4 channel adjustable ISO to ISO amplifier interface. Use to install a new radio in a car that has an original fit amplifier that takes a pre amplified audio feed. The 20-273 has a built in ground loop isolator and filters to get the best sound from the amplifier.
This lead has 8 way ISO connectors at both ends so if it is used on a car with different connectors (such as Saab, Nissan, Mazda) then you need to use the car specific lead as well. This might be a steering control or a standard ISO audio cable.
Can be used with car specific ISO leads for Nissan Bose, Mazda Bose, Honda Premium sound, Saab Bose and some earlier Landrover Harman/Kardon or any cars with OEM low level pre-amplifier signals from the original radio.
Always ensure that you connect the remote turn on wire from the new aftermarket radio to the Blue / white wire on this interface.
Fitting instructions for the amplifier interface are included. This details how the amp turn on wire can be connected.
Vehicle Compatibility:
- Alfa Romeo Giulietta [Type 940] (2010 onwards)
- Alfa Romeo GT [Type 937] (2004-2010)
- BMW 3 Series [E46] (1999-2006)
- Cadillac BLS (2006-2009)
- Landrover Discovery II [L318] (1998-2004)
- Landrover Freelander I [L314 Facelift] (2003-2006)
- Mazda 2 3rd Gen [DE] (2007-2014)
- Mazda 3 2nd gen [BL] (2009-2013)
- Mazda 5 2nd Gen (2005-2010)
- Mazda 5 3rd Gen (2010-2018)
- Mazda 6 1st/2nd/3rd Gen (2002-2022)
- Mazda MX-5 2nd/3rd Gen (1999-2015)
- Mazda RX-8 (2003-2010)
- Mercedes C-Class 1st Gen [W202] (1993-2000)
- Mercedes E-Class [W210] (1995-2002)
- Nissan 350Z (2003-2010)
- Nissan Elgrand E51 (2002-2010)
- Nissan GT-R (R35) (2007 onwards)
- Nissan Murano 1st/2nd Gen (2005-2014)
- Nissan Skyline R34 (1999-2002)
- Nissan X-Trail 2nd Gen [T31] (2007-2014)
- Saab 9-3 mk2 facelift (2006-2013)
- Saab 9-5 mk1 (1997-2010)
UK Deliveries: Free UK mainland delivery applies to orders over £30 (exceptions apply to remote regions and islands, which will see a surcharge at checkout).
Orders Under 2kg: Most in-stock items arrive in 2–3 working days. Items held by suppliers take 4–6 working days. (Note: Saturday is not a working day).
Orders Over 2kg: Dispatched via trusted couriers including AMAZON Shipping, Royal Mail, DPD, and UPS.
Royal Mail Specifics: Royal Mail aims to deliver in 1–3 working days, though this is not guaranteed. If your item has not arrived after 7 days, please contact us. We can only replace missing items after 14 days have passed.
More information (including international delivery on our Delivery Information page.
MAIN FEATURES
This interface converts the high level audio output of a new head unit to a low level pre amplified signal which will work with an amplifier.
4 channel adjustable ISO to ISO amplifier interface. Use to install a new radio in a car that has an original fit amplifier that takes a pre amplified audio feed. The 20-273 has a built in ground loop isolator and filters to get the best sound from the amplifier.
This lead has 8 way ISO connectors at both ends so if it is used on a car with different connectors (such as Saab, Nissan, Mazda) then you need to use the car specific lead as well. This might be a steering control or a standard ISO audio cable.
Can be used with car specific ISO leads for Nissan Bose, Mazda Bose, Honda Premium sound, Saab Bose and some earlier Landrover Harman/Kardon or any cars with OEM low level pre-amplifier signals from the original radio.
Always ensure that you connect the remote turn on wire from the new aftermarket radio to the Blue / white wire on this interface.
Fitting instructions for the amplifier interface are included. This details how the amp turn on wire can be connected.
Vehicle Compatibility:
- Alfa Romeo Giulietta [Type 940] (2010 onwards)
- Alfa Romeo GT [Type 937] (2004-2010)
- BMW 3 Series [E46] (1999-2006)
- Cadillac BLS (2006-2009)
- Landrover Discovery II [L318] (1998-2004)
- Landrover Freelander I [L314 Facelift] (2003-2006)
- Mazda 2 3rd Gen [DE] (2007-2014)
- Mazda 3 2nd gen [BL] (2009-2013)
- Mazda 5 2nd Gen (2005-2010)
- Mazda 5 3rd Gen (2010-2018)
- Mazda 6 1st/2nd/3rd Gen (2002-2022)
- Mazda MX-5 2nd/3rd Gen (1999-2015)
- Mazda RX-8 (2003-2010)
- Mercedes C-Class 1st Gen [W202] (1993-2000)
- Mercedes E-Class [W210] (1995-2002)
- Nissan 350Z (2003-2010)
- Nissan Elgrand E51 (2002-2010)
- Nissan GT-R (R35) (2007 onwards)
- Nissan Murano 1st/2nd Gen (2005-2014)
- Nissan Skyline R34 (1999-2002)
- Nissan X-Trail 2nd Gen [T31] (2007-2014)
- Saab 9-3 mk2 facelift (2006-2013)
- Saab 9-5 mk1 (1997-2010)
MAIN FEATURES
This interface converts the high level audio output of a new head unit to a low level pre amplified signal which will work with an amplifier.
4 channel adjustable ISO to ISO amplifier interface. Use to install a new radio in a car that has an original fit amplifier that takes a pre amplified audio feed. The 20-273 has a built in ground loop isolator and filters to get the best sound from the amplifier.
This lead has 8 way ISO connectors at both ends so if it is used on a car with different connectors (such as Saab, Nissan, Mazda) then you need to use the car specific lead as well. This might be a steering control or a standard ISO audio cable.
Can be used with car specific ISO leads for Nissan Bose, Mazda Bose, Honda Premium sound, Saab Bose and some earlier Landrover Harman/Kardon or any cars with OEM low level pre-amplifier signals from the original radio.
Always ensure that you connect the remote turn on wire from the new aftermarket radio to the Blue / white wire on this interface.
Fitting instructions for the amplifier interface are included. This details how the amp turn on wire can be connected.
Vehicle Compatibility:
- Alfa Romeo Giulietta [Type 940] (2010 onwards)
- Alfa Romeo GT [Type 937] (2004-2010)
- BMW 3 Series [E46] (1999-2006)
- Cadillac BLS (2006-2009)
- Landrover Discovery II [L318] (1998-2004)
- Landrover Freelander I [L314 Facelift] (2003-2006)
- Mazda 2 3rd Gen [DE] (2007-2014)
- Mazda 3 2nd gen [BL] (2009-2013)
- Mazda 5 2nd Gen (2005-2010)
- Mazda 5 3rd Gen (2010-2018)
- Mazda 6 1st/2nd/3rd Gen (2002-2022)
- Mazda MX-5 2nd/3rd Gen (1999-2015)
- Mazda RX-8 (2003-2010)
- Mercedes C-Class 1st Gen [W202] (1993-2000)
- Mercedes E-Class [W210] (1995-2002)
- Nissan 350Z (2003-2010)
- Nissan Elgrand E51 (2002-2010)
- Nissan GT-R (R35) (2007 onwards)
- Nissan Murano 1st/2nd Gen (2005-2014)
- Nissan Skyline R34 (1999-2002)
- Nissan X-Trail 2nd Gen [T31] (2007-2014)
- Saab 9-3 mk2 facelift (2006-2013)
- Saab 9-5 mk1 (1997-2010)
UK Deliveries: Free UK mainland delivery applies to orders over £30 (exceptions apply to remote regions and islands, which will see a surcharge at checkout).
Orders Under 2kg: Most in-stock items arrive in 2–3 working days. Items held by suppliers take 4–6 working days. (Note: Saturday is not a working day).
Orders Over 2kg: Dispatched via trusted couriers including AMAZON Shipping, Royal Mail, DPD, and UPS.
Royal Mail Specifics: Royal Mail aims to deliver in 1–3 working days, though this is not guaranteed. If your item has not arrived after 7 days, please contact us. We can only replace missing items after 14 days have passed.
More information (including international delivery on our Delivery Information page.
