Vendor: DiamondBoxx

SOLD OUT XX4 PREORDER (ships August 2024) 100 piece 10th Anniversary limited edition

SKU: XX4_300
Regular price $ 2,969.10 Sale price $ 2,969.10 Regular price $ 3,299.00
Sale 10.0% $ 329.90 (10.0%)
Battery Size 300 Wh
Out of stock

10 years ago, in 2014, the portable audio world was nothing more than small Bluetooth speakers and iPod docks.  A google search for "Bluetooth boombox" would return zero results.  So we introduced our first product to the market, the DiamondBoxx Model L.  The world's first high performance Bluetooth speaker.   It had a 77 Watt*hour battery and a 140 Watt RMS amplifier and sold for $799  ($1050 adjusted for inflation)


Fast forward 10 years and we are celebrating our history with 100 pieces only of the craziest thing we've ever built.  The XX4!

The XX4 has an 800 Watt RMS, 12 channel class A/B amplifier, Four built-in 8.5" neodymium DVC subwoofers.  Two high output neodymium midrange drivers and two neodymium compression PEI dome compression tweeters, each one with it's own amplifier.  Bluetooth 5.x with HD audio sound quality, 5 band analog EQ and subwoofer level control.  Fully adjustable stereo expansion control for an immersive listening experience.  It also has ZERO latency analog audio inputs for musical instruments or video or gaming use where every millisecond matters.

The XX4 comes standard with a 300Wh lithium battery, with 462Wh and 600Wh options.  It's not easily portable as it is still heavy even with all of the high-end lightweight materials used, but the important part is that it can be moved around and taken from place to place as well as used in places that don't have electricity.  Each unit will be hand built in Gilbert Arizona, serialized, and sent to your door.  It will go down as an instant classic and collectors item.


The XX4 is a big, powerful, wireless, battery-powered speaker system.  While massive, it is loud enough to replace a pair of dj speakers, an amp, a subwoofer and a Bluetooth receiver, and do it all without needing to plug in to AC power.  It can play very loud with very deep bass, clear vocals and highs, on battery power for up to 40 hours on a single charge.

XX4 Stereo Expander Operational Description 

A total of 186 surface mount LEDs used in the gorgeous VU meters that are a throwback to Tony's original college speaker.  These are a trademark of Tony D'Amore's designs, seen here and on D'Amore Engineering's super high end car audio amplifiers as well as on some products he designed in the past. 


The Specifications 

Size 35.5 x 24 x 11.5 inches (including feet, handle, and knobs)

Bluetooth- Bluetooth 5.1 aptX HD with TWS 

Subwoofers- 4 x 8.5 inch NEO DVC 

Midwoofers- 2 x 8.5 inch NEO high output wideband

Tweeters- 2 x 1 inch dome, horn loaded NEO

Amplifier Power- 800 Watts RMS , Max 1200W 

Frequency Response- 32Hz - 22kHz  @+/ -3dB 

Weight- 65 lbs. 

Playtime on single charge (300Wh battery)  4-20 hours

Playtime on single charge (462Wh battery)  6-30 hours

Playtime on single charge (600Wh battery)  8-40 hours

Battery Life- Over 1000 recharge cycles (all sizes)

0% - 100% charge time with 7A charger (300Wh battery) 4 hours

0% - 100% charge time with 7A charger (462Wh battery) 6 hours

0% - 100% charge time with 7A charger (600Wh battery) 8 hours

The XX4 can play music while charging.  

Battery Life- Over 1000 recharge cycles 


Included Items 

DiamondBoxx Model XX4 

7A Lithium-Ion Battery Charger 

3.5 mm stereo audio cable 

User manual 

Proudly Made in USA   


XX4 Owner's manual 

Deep, Real Bass
Made Eco Friendly
Loud Clear Undistorted
Full Spectrum Stereo Sound


Customer Reviews

Based on 3 reviews
Amazing sound quality, made in USA

I went down many rabbit holes looking for the best bluetooth speaker out there, and purchased the XL2 (before the XL3 was available). I am so VERY happy with my purchase! The highs are beautiful and balanced, the mids and lows are present and offer a ton of fun at parties. We played this at my wedding and a bunch of music professionals were gathered around admiring the clarity amd response of the XL2 boombox. One has since used it for clearing up his mixes! Overall amazing product. Thank you Tony and team!

Robert Slaughter
The Best!!

I have found DiamondBoxx products to be the Best sounding on the Market and are a Work of Art in build and sound!!