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Best Buy customers often prefer the following products when searching for mono to stereo adapter.

A mono-to-stereo adapter is a simple device which allows the connection of stereo devices to mono devices. These tools will offer flexibility and versatility for your electronics. Browse the top-ranked list of mono to stereo adapters below along with associated reviews and opinions.

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  1. Stereo to Mono Adapter for Most KEF Ci Speakers - Silver - Front_Zoom

    Product Description

    Immerse yourself in stereo sound from a single speaker with this KEF CITR-SM stereo to mono transformer. The setup combines the left and right audio channels into a single output without reducing sound quality. Small in size and easy to mount near the speaker or the audio source, this KEF CITR-SM stereo to mono adapter is ideal for installations where space is limited.
    See all Speaker Accessories

    Product Description

    Immerse yourself in stereo sound from a single speaker with this KEF CITR-SM stereo to mono transformer. The setup combines the left and right audio channels into a single output without reducing sound quality. Small in size and easy to mount near the speaker or the audio source, this KEF CITR-SM stereo to mono adapter is ideal for installations where space is limited.
    See all Speaker Accessories
    See all Speaker Accessories
  2. RØDE - SC4 3.5mm-to-3.5mm Female/Male Microphone Adapter - Gray/Black - Front_Zoom
    Top comment

    "The only drawbacks are that the audio comes through in mono so it’s not as good as a digital converter and you need a lightning adapter to get it to work with most iPhones. ...I use this to use my Sony stereo clip on mic on my iPhone XS Max and it works great. "

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    Product Description

    Connect microphones to your smartphone or tablet with this RODE SC4 TRS to TRRS adapter. It allows you to connect microphones with a 3.5mm output to connect to most Apple iOS and Android devices for high-quality audio input. This RODE SC4 TRS to TRRS adapter has extra shielding for improved audio transmission.
    See all Camera Microphones
    Top comment

    "The only drawbacks are that the audio comes through in mono so it’s not as good as a digital converter and you need a lightning adapter to get it to work with most iPhones. ...I use this to use my Sony stereo clip on mic on my iPhone XS Max and it works great. "

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    Product Description

    Connect microphones to your smartphone or tablet with this RODE SC4 TRS to TRRS adapter. It allows you to connect microphones with a 3.5mm output to connect to most Apple iOS and Android devices for high-quality audio input. This RODE SC4 TRS to TRRS adapter has extra shielding for improved audio transmission.
    See all Camera Microphones
    See all Camera Microphones
  3. Belkin - Lightning to 3.5mm Audio Cable + Audio Charger Splitter - White - Front_Zoom
    Top comment

    "Only downside is that audio out to the car’s stereo appears to be mono only-not stereo. Not a big deal for my purposes but thought it worth noting....[This review was collected as part of a promotion.] We some old stereos in the pool hall and around the barn that don’t have Bluetooth, this makes it pretty quick and straight forward in being able to play music and charge your phone at the same time for stereos that still used the AUX cable."

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    Product Description

    Plug both a charger and headphones into your iPhone with this Belkin Audio + RockStar adapter. Its 3.5mm aux port lets you connect an MFi-certified audio device, and its 2.4-amp Lightning port also supports data syncing for file transfers. The built-in digital-to-analog converter of this Belkin Audio + RockStar adapter maintains the original sound quality of your music.
    See all Cell Phone A/V Adapters
    Top comment

    "Only downside is that audio out to the car’s stereo appears to be mono only-not stereo. Not a big deal for my purposes but thought it worth noting....[This review was collected as part of a promotion.] We some old stereos in the pool hall and around the barn that don’t have Bluetooth, this makes it pretty quick and straight forward in being able to play music and charge your phone at the same time for stereos that still used the AUX cable."

    See all customer reviews

    Product Description

    Plug both a charger and headphones into your iPhone with this Belkin Audio + RockStar adapter. Its 3.5mm aux port lets you connect an MFi-certified audio device, and its 2.4-amp Lightning port also supports data syncing for file transfers. The built-in digital-to-analog converter of this Belkin Audio + RockStar adapter maintains the original sound quality of your music.
    See all Cell Phone A/V Adapters
    See all Cell Phone A/V Adapters
  4. Metra - Radio Harness for Select 2009-2014 Hyundai, Kia - Multi - Front_Zoom
    Top comment

    "Car stereo...Easy service with stereo purchase would buy again if needed...Part for stereo...Works great with the stereo I purchased. Had no problems."

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    Product Description

    Install an aftermarket radio in your compatible Hyundai or Kia vehicle with this harness adapter that is compatible with select models with an Infinity sound system.
    See all Radio Harnesses
    Top comment

    "Car stereo...Easy service with stereo purchase would buy again if needed...Part for stereo...Works great with the stereo I purchased. Had no problems."

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    Product Description

    Install an aftermarket radio in your compatible Hyundai or Kia vehicle with this harness adapter that is compatible with select models with an Infinity sound system.
    See all Radio Harnesses
    See all Radio Harnesses
  5. Metra - Antenna Adapter for Select 1987-2006 Infiniti/Nissan - Black - Front_Zoom
    Top comment

    "Great for Installing Car Stereos...I wanted a new car stereo installed for my car and the one I bought required this adapter. ...cable adapters that came with the stereo work flawlessly in the car. "

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    Product Description

    This antenna cable adapter (40-NI10) is used to adapt your vehicle’s original antenna cable to plug into an aftermarket radio with a male Motorola connector on one end and a Nissan-style antenna jack on the other.
    See all Antennas & Adapters
    Top comment

    "Great for Installing Car Stereos...I wanted a new car stereo installed for my car and the one I bought required this adapter. ...cable adapters that came with the stereo work flawlessly in the car. "

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    Product Description

    This antenna cable adapter (40-NI10) is used to adapt your vehicle’s original antenna cable to plug into an aftermarket radio with a male Motorola connector on one end and a Nissan-style antenna jack on the other.
    See all Antennas & Adapters
    See all Antennas & Adapters
  6. Metra - Wiring Harness for Select 1993-2013 Subaru - Multi - Front_Zoom
    Top comment

    "Harness adapter for Subaru Impreza...Worked for the stereo system the guy installed. Bought what was recommended by installer....Turbo Wire Aftermarket Radio Wire Harness Adapter...Needed this item to install a new stereo in Subaru"

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    Product Description

    Neatly connect your aftermarket radio to your vehicle's harness with this convenient wire harness adapter.
    See all Radio Harnesses
    Top comment

    "Harness adapter for Subaru Impreza...Worked for the stereo system the guy installed. Bought what was recommended by installer....Turbo Wire Aftermarket Radio Wire Harness Adapter...Needed this item to install a new stereo in Subaru"

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    Product Description

    Neatly connect your aftermarket radio to your vehicle's harness with this convenient wire harness adapter.
    See all Radio Harnesses
    See all Radio Harnesses
  7. Aluratek - Wireless Adapter for Apple CarPlay - White - Front_Zoom
    Top comment

    "Wireless adapter...Works as it should, makes your wired Apple play stereo wireless...Glad someone finally made one reasonably priced for aftermarket stereos!"

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    Product Description

    Aluratek’s wireless car adapter for CarPlay provides instant Apple CarPlay capability without needing to connect your phone’s cable to the vehicle’s CarPlay enabled USB port. You can easily enjoy music, navigation, Siri, and many more CarPlay features without needing to connect your cable.
    See all Cell Phone A/V Adapters
    Top comment

    "Wireless adapter...Works as it should, makes your wired Apple play stereo wireless...Glad someone finally made one reasonably priced for aftermarket stereos!"

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    Product Description

    Aluratek’s wireless car adapter for CarPlay provides instant Apple CarPlay capability without needing to connect your phone’s cable to the vehicle’s CarPlay enabled USB port. You can easily enjoy music, navigation, Siri, and many more CarPlay features without needing to connect your cable.
    See all Cell Phone A/V Adapters
    See all Cell Phone A/V Adapters
  8. Maestro - Head Unit Adapter for Select Pioneer Radios and a Comptatible T Harnesses - Black - Front_Zoom

    Product Description

    The iDatalink ACC-HU-PIO1 adapter allows you to connect select Pioneer radios to compatible iDatalink T-harnesses. This extra harness takes the place of the harness that comes with your new Pioneer stereo. It connects directly between select Pioneer radios and the latest Maestro "Head-unit ready" T-harnesses so you won't have to splice any wires.Note: This harness will not work by itself. You Must Also Have an Idatalink Maestro Interface Module (ADS-MRR or ADS-MRR2) and a Compatible Vehicle-Specific Idatalink Maestro "HRN-HRR" T-Harness. (It MUST be the HRN-HRR version, NOT the HRN-RR one.) Sold separately.
    See all Deck Harnesses

    Product Description

    The iDatalink ACC-HU-PIO1 adapter allows you to connect select Pioneer radios to compatible iDatalink T-harnesses. This extra harness takes the place of the harness that comes with your new Pioneer stereo. It connects directly between select Pioneer radios and the latest Maestro "Head-unit ready" T-harnesses so you won't have to splice any wires.Note: This harness will not work by itself. You Must Also Have an Idatalink Maestro Interface Module (ADS-MRR or ADS-MRR2) and a Compatible Vehicle-Specific Idatalink Maestro "HRN-HRR" T-Harness. (It MUST be the HRN-HRR version, NOT the HRN-RR one.) Sold separately.
    See all Deck Harnesses
    See all Deck Harnesses
  9. Metra - Antenna Adapter for Select 1999-2011 Volvo S60 V70 XC70 C70 - Black - Front_Zoom
    Top comment

    "Needed this adapter so that the AM/FM reception could continue on an upgraded stereo. ...When I replaced my car stereo unit I bought this antenna and it’s a great unit for the stereo system I enjoy it’s reception capacity"

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    Product Description

    Connect your car's antenna cable to your car stereo system with this antenna adapter for use with Volvo 1999-2008 vehicle models.
    See all Antennas & Adapters
    Top comment

    "Needed this adapter so that the AM/FM reception could continue on an upgraded stereo. ...When I replaced my car stereo unit I bought this antenna and it’s a great unit for the stereo system I enjoy it’s reception capacity"

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    Product Description

    Connect your car's antenna cable to your car stereo system with this antenna adapter for use with Volvo 1999-2008 vehicle models.
    See all Antennas & Adapters
    See all Antennas & Adapters
  10. Metra - Antenna Adapter for Select 2016-2021 Honda Civic - Black - Front_Zoom
    Top comment

    "Antenna adapter...Fit perfect inside of my Honda Civic hatchback worked out perfect while I install to stereo system...Needed to hook up car stereo"

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    Product Description

    Maintain AM/FM radio capability when installing an aftermarket stereo system with this Metra antenna adapter kit. Its sturdy, high-quality construction ensures durability, and it's fast and easy to install, so you can enjoy your favorite stations right away. This Metra antenna adapter kit fits Honda vehicles made in 2016 or after.
    See all Antennas & Adapters
    Top comment

    "Antenna adapter...Fit perfect inside of my Honda Civic hatchback worked out perfect while I install to stereo system...Needed to hook up car stereo"

    See all customer reviews

    Product Description

    Maintain AM/FM radio capability when installing an aftermarket stereo system with this Metra antenna adapter kit. Its sturdy, high-quality construction ensures durability, and it's fast and easy to install, so you can enjoy your favorite stations right away. This Metra antenna adapter kit fits Honda vehicles made in 2016 or after.
    See all Antennas & Adapters
    See all Antennas & Adapters
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