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  • 8 week right of return
  • Up to 12 year guarantee
  • Free & easy returns
  • Directly from manufacturer


XL party blaster
Portable XL stereo speaker with Bluetooth, FM radio and giant down-firing subwoofer
€ 599.99
incl. VAT
Color: black
Ready for shipping within one work day  
 € 14.99 Shipment
20% Voucher*
Copy code and redeem during checkout. Details
Real savings for a short time only!
  • 8 week right of return
  • Free & easy returns
  • Directly from manufacturer


Why we love this product
If you need to feel the bass, not just hear it, and if no party is complete without room-shaking music - the BOOMSTER XL is for you.
Big Bluetooth speakers BOOMSTER XL
Key advantages at a glance
  • Portable XL stereo speaker with Bluetooth, FM radio and giant down-firing subwoofer
  • 3-way system: 2 tweeters, 2 midrange drivers + subwoofer for powerful hi-fi sound with mega bass
  • Bluetooth 4.0 with aptX® & NFC for CD-quality wireless audio with Spotify, YouTube, etc.
  • FM radio with preset buttons & seek function in a robust aluminium enclosure
  • 2 band equalizer makes it easy to adjust sound levels
  • AUX input, USB charger and removable carry strap
  • Dimensions: Over half a meter wide, 20 cm deep
BOOMSTER XL review of SFT Magazin
"[T]he BOOMSTER XL doesn’t quake at even high volume levels and ensures a party atmosphere with its powerful performance."
SFT Magazin 12/2015
All test reviews
(4.83 of 5 from 6 Reviews)
All ratings

Overview of our technologies

Bluetooth apt-X
plug & play
FM Radio
When tech nerds decide to make a boombox...

The BOOMSTER XL is the result: A powerful, portable all-in-one speaker with the best sound in its price class. And no wonder. The same acoustic engineers who developed Teufel's award-winning high-end stereo speaker, the Definion 5, are also responsible for the BOOMSTER XL.

Technical highlights at a glance
  • 3-way stereo system for balanced, true-to-source sound
  • Two tweeters capture the finest details in all genres of music
  • Two midrange drivers ensure that vocals are played back with naturalness and warmth
  • Giant downfire subwoofer produces powerful, dry and very deep bass
  • An extremely low-noise class D amplifier with an 80-watt maximum power capacity generates high, distortion-free levels even in large rooms
  • 2-band equalizer makes it easy to adjust sound levels
  • Adjustable subwoofer levels
Wireless is more: Bluetooth 4.0 with aptX

Bluetooth 4.0 with the aptX compression algorithm guarantees stable wireless audio transmission in CD quality along with minimal power usage. Even movie soundtracks are played back in perfect sync and a range of 10 meters allows the user to control the system from anywhere in the room.



Stream from your iPhone, iPad or iPod with the latest Bluetooth technology.


It is also easy to connect to Android smartphones and tablets.

Mac OS, PC and Linux

You can of course also stream music and videos wirelessly from these systems.
More fun with Amazon Alexa

Teufel Streaming systems and speaker with bluetooth can be optionally expanded with a device from the Amazon Echo series to allow you to select and enjoy music even more conveniently via Alexa voice control. You can find out more about how this extension works and what you can do with it on the Teufel blog.

Learn more
OK Google, play my Flow

Lost your remote control somewhere in the sofa again? No worries! Control your sound system with voice commands when you connect a Google Home device via Bluetooth.

Google Home Mini

NFC technology makes it possible for smartphones to pair with the BOOMSTER XL by simply bringing the two devices into close proximity. The system can memorize the profile of up to 6 different devices such as smartphones and tablets for instant connectivity.

Listen for longer

The BOOMSTER XL has a high-capacity lithium ion battery with a long runtime for musical adventures far from power outlets. A handy USB charging socket even lets you charge your smartphone with an up to 2 amp charging current.

Audio input connections

A 3.5 mm jack socket supports devices with mini stereo jacks. This allows for a range of source options in addition to Bluetooth.


The integrated FM radio uses an external antenna for maximum reception and features a seek function to help you find the perfect radio station no matter where you are. Three preset buttons can be programmed with your favourite stations for even faster access to your music.

Aluminium casing

The BOOMSTER XL is made from highly robust yet attractive anodized aluminium and is even splash proof – nice to know when out and about in the great outdoors.

BOOMSTER XL Groß Frontansicht Teufel

Practical rubberised handles and a rubber slip-proof bottom add to the system’s portability and placement options. A handy carry strap attaches magnetically to a clever mount and can be easily removed.

Included components

  • Boomster XL rechargeable battery-pack
Download information as PDF

Technical Data

A portable sound system with 2 tweeters, 2 mid-range speakers and a subwoofer for those who want to enjoy powerful XL sound on-the-go.
Maximum sound pressure level [dB/1m] 105
Frequency range from/to [Hz] 44 - 20000 Hz
Tweeter (number per enclosure) 2
Tweeter (diameter) [mm] 25
Tweeter (material) Fabric
Midrange driver (number per enclosure) 2
Midrange driver (diameter) [mm] 70
Midrange driver (material) Cellulose, coated
Woofer (number per enclosure) 1
Woofer (diameter) [mm] 160
Woofer (material) Reinforced synthetic
Acoustic principle 3-way system
Enclosure type Bass reflex
Enclosure material Aluminium, ABS synthetic
Enclosure surface Anodised
Equalisation openings (pos.) Bottom
Miscellaneous Integrated handle
Stereo jack 3.5mm - in 1
USB 2.0 Yes (only for charging)
Bluetooth 4.0 with aptX-Codec
Miscellaneous USB charging function for smartphones
Radio present Yes
Channel memory slot - FM 3
FM - UKW Yes
Miscellaneous Wire antenna can be rolled out of the back side from its own storage compartment
Total power output capacity (RMS) [Watt] 90
Amplifier technology Class-D
Amplifier configuration 2.1
Amplifier channels 5
Fuse Yes
Storage for settings when disconnected Yes
Automatic on/off Yes
Battery type Lithium-ion battery
Battery operating time Up to 10 hr
Battery max. charging time 3hrs
Depth [cm] 20
Width [cm] 51
Height [cm] 26
Weight [kg] 9.95
Miscellaneous Includes removable carry strap


Accessories and bundle packages are not currently available for this product.

Expert reviews

BOOMSTER XL review of SFT Magazin
BOOMSTER XL review of SFT Magazin
"[T]he BOOMSTER XL doesn’t quake at even high volume levels and ensures a party atmosphere with its powerful performance."
SFT Magazin 12/2015
[T]he BOOMSTER XL’s exceptional workmanship can be immediately felt: The frame is made entirely out of brushed aluminium [...]. In addition, the noise maker is splash water-proof and won’t take offense if you accidentally leave it out on the terrace during a light rain.

One can’t complain about the [...] battery runtime that extends to over eight hours at even considerable volume levels. The BOOMSTER XL did justice to its name during a sound check: Even without the bass turned up, the downfire subwoofer brought forth a respectable level of bass power. The brilliance of the upper frequencies are barely affected, even if there are sound conjurers out there capable of more detail. However, the BOOMSTER XL doesn’t quake at even high volume levels and ensures a party atmosphere with its powerful performance.

In terms of connections, the BOOMSTER XL has Bluetooth 4.0, aptX, NFC, AUX and a USB port for charging smartphones. In order to defend against moisture, the connections and radio antenna are hidden beneath a rubber flap on the back.

Zum ganzen Test
BOOMSTER XL review of www.areadvd.de
BOOMSTER XL review of www.areadvd.de
"The bass pushes, the effects fly, the vocals are clean and well integrated. There is nothing to criticize here, only praise and enthusiasm."
www.areadvd.de 18.11.2015
"…the BOOMSTER XL takes off at a relentless pace and scales levels that premium micro hi-fi systems can only dream of. Even other Bluetooth loudspeakers from competitors are mostly powerless here. The volumes that the large Berlin speaker packs are hardly available from anyone else, and certainly not at this price.”

"The bass pushes, the effects fly, the vocals are clean and well integrated. There is nothing to criticize here, only praise and enthusiasm. The BOOMSTER XL is really a lot of fun – at all times and in all places.”

"The Berlin sound innovators from Budapester Street have added another, high-performance segment to the audio market with the BOOMSTER XL. Excellent workmanship, very good materials, and with an assertive but at the same time thoroughly cultivated sound, the BOOMSTER XL doesn’t have any weaknesses.”

You can read the full test review (in German) at www.areadvd.de
How our customers rated this product:
(4.83 of 5 from 6 Reviews)
Stefan S. / 2018-08-27
Great device!Great sound, enormous volume and still clean sound at the highest volumes. The bass is very good, but it's not the advertised bass monster. I am absolutely satisfied with the Boomster XL and can recommend it 100%....More
Jürgen B. / 2018-07-29
TOPVery good sound, sufficient power, one point of criticism is that the radio has only moderate reception - but is otherwise 100% recommendable! (Translated from German)
Bernhard H. / 2018-02-05
Great speakerAfter almost two weeks with us the Teufel speaker is loose I can say that we are enthusiastic about the Boomster XL. The housing made of robust aluminium with the two recessed grips on the side is visually appealing...More
Bernd B. / 2017-12-14
Boomster XLAfter the many positive reviews and comments I was looking forward to the first trial. You can expect something good for this price and weight. First of all, streaming from the smartphone via Bluetooth, I am not yet...More
René W. / 2017-12-03
Boomster XLPowerful sound, also like with the normal Boomster. Only 4.5 stars, because I expected even more than the normal Boomster. But absolute top product. Perfectly processed - fast delivery (you will be continuously...More

    Downloads & support

    Help regarding this product
    My Bluetooth speaker produces a lesser quality sound with my Windows PC or laptop.
    It could be that the speaker is connected as a device with speakerphone function. Please go to: settings menu > devices and printer > BOOMSTER (or other Bluetooth device). Right click on the device and remove the check mark next to the “speakerphone” option.
    * Offer valid until 30.01.2018 23:59. The voucher is valid for BAMSTER, BAMSTER PRO, BAMSTER PRO, BAMSTER XS, BOOMSTER, BOOMSTER XL, CAGE, Cinebar 11 , Cinebar 52 THX, Cinebar 52 THX Streaming, Cinebar Duett , Cinebar One/One+, Cinebar Trios , Cinebase, Cinebase Streaming, Cinesystem Trios, Columa 300 Easy , Columa 300 Impaq , Columa 300 Mk2, Concept C, Concept CL 300, Concept E 250, Concept E 450 Digital , Consono 35 Mk3 , Cubycon, Cubycon Power Edition, Cubycon Satelliten-Lautsprecher, Definion 3, Definion 3S, Kombo 22, Kombo 500, Kombo 500S, LT 4, LT 4 Complete , LT 4 Impaq , LT 4 Power XL Edition, MOVE BT, MOVE PRO, REAL BLUE, REAL BLUE NC, ROCKSTER XS, System 4 THX, System 6 , Teufel AIRY (2017), Teufel Connector, Teufel MASSIVE, Teufel One M, Teufel One S, Teufel Soundbar Streaming, Teufel Sounddeck Streaming, Teufel Stereo L, Teufel Stereo M, Theater 500, Theater 500 Surround , Theater 6 Hybrid Surround , TURN, Ultima 20 Mk2 (2017), Ultima 40 Surround Impaq "5.1-Set" (2017), Varion, Varion Complete , Varion Impaq. The voucher is only intended for the use of private customers. The voucher cannot be redeemed for cash, nor can it be used in combination with other vouchers. It cannot be used for orders that have already been placed. The resale of a voucher is prohibited and it will lose its value in the case of being resold. You can learn more about the terms and conditions in the General Business Conditions.
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