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Regular price
$ 1,699.00
Regular price
$ 1,999.00
Sale price
$ 1,699.00


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    Loud Clear Wireless Sound Anywhere You Need It

    The XL3 is a big, powerful, yet portable and wireless, battery powered speaker system.  It can play very loud with very deep bass, clear vocals and highs, on battery power for up to 26 hours on a single charge.

    XL3 Stereo Expander Operational Description 

    The King of all Bluetooth Boombox, the Model XL3.  But don't take our word for it, check out this review video by Flossy Carter. 

    Wireless True Stereo Sound, with adjustable stereo width control.  Six electrically and mechanically hand matched 5.5" woofers and 4" bass port for bass you can feel as well as hear.  122dB loud.  Huge 300Wh lightweight Lithium battery.  Anywhere, anytime, no electricity needed.

    5-26 hours of music on a single charge

    Built-in 600 Watt RMS (1000W Max) Class A/B 10 channel high fidelity amplifier in a tri-amped or bi-amped arrangement (mode dependent) with 2-way or 3-way active crossovers and analog signal processing for the best sound possible in the lightest package with the longest battery life, and ZERO LATENCY inputs for video use. 

    With its massive aluminum front panel serving as the amplifier's heatsink, it is made to play FULL BLAST all day on a hot day without skipping a beat. 

    The Specifications 

    Size- 28 x 19 x 12 inches 

    Bluetooth- Bluetooth 5.1 aptX HD, TWS 

    Woofers- 6 x 5.5 inch Aluminum Cone 

    Tweeters- 4 x 1 inch Titanium Dome 

    Amplifier Power- 600 Watts RMS , Max 1000W 

    Frequency Response- 35Hz - 22kHz  @+/ -3dB 

    Weight- 45 lbs. 

    Internal Battery- Lithium Ion 300 Wh, protected

    Max Voltage- 16.8V  

    Battery Life- Over 1000 recharge cycles 

    Charging time (0-100%)  about 4 hours w/ 16.8V 7A charger   


    Included Items 

    DiamondBoxx Model XL3 

    7A Lithium-Ion Battery Charger 

    3.5 mm stereo audio cable 

    User manual 

    Proudly Made in USA   



    Please note that ALL new Model XL3 will have Bluetooth 5.x and will not connect via True Wireless Stereo (TWS) with older versions of the XL2 or other first or second generation DiamondBoxx products.  They can still be linked via cable.  


    XL3 Owner's manual 

    angled front view of black XL3 speaker with red and blue knobs in outdoor setting with people in background
    angled front/side view of model XL3 black with red knobs
    side view of model XL3
    back view of model XL3 showing Rear panel with charging port and ports for aux and output cables


    Great clarity, strong bass. sleek design good weight.

    710 FUNK PLAYER 

    This XL2 speaker is so good that right after I bought my first one, I purchased another. I also purchased the sub8.2 to go along with the XL2. Best speakers ever!! Don't hesitate! These speakers are not just another
    purchase but an actual investment. I truly believe I could resell my setup
    for more than what I bought it for!

    Paul G

    Seems to be a great product so far. Diamond box never disappoints.

    Russell Sudbury

    Sound is A ++! My brother bought one a while back and I knew I had to get one.

    Rigo Guijosa

    Amazing output and sound quality for the price, can't beat it!

    Steven Robbin

    Customer Reviews

    Based on 4 reviews

    XL3 is worth every penny… don’t hesitate


    This is the best-sounding portable Bluetooth speaker I have ever heard. The mids highs and lows all are rich and hit it with such force.


    Superior Sound!


    Transaction went fantastic