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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. Best Buy essentials™ - Female 3.5 mm to Male 1/4" Audio Adapter - Black

    SKU: J2FPJKY62H

    3.5mm stereo to 1/4" mono adapter...The amplifier has two 1"4 mono inputs (L and R) and I have a 3.5mm stereo cable coming from my DAC, since the tv only has an optical output. ...3.5mm to 1/4 Audio Adapter...

    Product Description

    A black audio adapter that converts a 3.5 mm female jack to a 1/4" male plug.
    See all Monitor & Video Cables
    Your price for this item is $6.99

  2. Metra - Female RCA Y Adaptors - (Pair) - Silver

    SKU: J7RX7L5K69

    Good adapter for stereo system...Hooked up amps for my car system stereo the beats in my trunk...Mono RCA Output split into dual RCA...Even a Beat Buy employee found them in the back where they install...

    Product Description

    A pair of silver RCA Y adapters with spiral shielding for noise rejection and clear audio connections.
    See all Monitor & Video Cables
    Your price for this item is $11.99

  3. Metra - Male RCA Y Adapters - (Pair) - Multi

    SKU: J7RX7L5T6Y

    Male RCA Adapters...Great Y adapters...Male RCA Y Adapters Works Great with any stereo concept, home or auto.

    Product Description

    A pair of multi-colored RCA Y adapters with spiral shielding for noise rejection and clear audio connections.
    See all Monitor & Video Cables
    Your price for this item is $11.99

  4. AudioQuest - FLX-MINI Splitter - Flexible 3.5mm Mini Plug > 2x 3.5mm Jacks - White

    SKU: J7QX8PHHGT

    Product Description

    A flexible white adapter that splits one 3.5mm plug into two jacks with solid PSC+ conductors.
    See all HDMI Cables
    Your price for this item is $22.95

  5. AudioQuest - FLX-X F22M RCA Splitter - 1 x Female RCA > 2 x Male RCA - Gold

    SKU: J7QX8PH8W4

    Product Description

    A gold RCA splitter with solid long-grain copper construction for expanding audio signal output to multiple channels.
    See all Monitor & Video Cables
    Your price for this item is $24.95

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

    SKU: JXXYVQXFKP

    Product Description

    A silver adapter that merges stereo channels into mono for seamless, high-quality single-speaker audio output.
    See all Speaker Accessories
    Your price for this item is $149.99
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In-store pricing may vary. Prices and offers are subject to change. © 2026 Best Buy. All rights reserved. BEST BUY, the BEST BUY logo, the tag design, and MY BEST BUY are trademarks of Best Buy and its affiliated companies.