The Minirig Mini 4 in Ultra Black is a portable Bluetooth speaker that represents the latest innovation in audio technology. Crafted in Bristol, UK, this speaker is the result of over a decade of design evolution, offering a robust anodized aluminium and high-impact ABS construction.
Top View - The Minirig Mini 4 in Ultra Black is a portable Bluetooth speaker that represents the latest innovation in audio technology. Crafted in Bristol, UK, this speaker is the result of over a decade of design evolution, offering a robust anodized aluminium and high-impact ABS construction.
Rear View - The Minirig Mini 4 in Ultra Black is a portable Bluetooth speaker that represents the latest innovation in audio technology. Crafted in Bristol, UK, this speaker is the result of over a decade of design evolution, offering a robust anodized aluminium and high-impact ABS construction.
In Hand - The Minirig Mini 4 in Ultra Black is a portable Bluetooth speaker that represents the latest innovation in audio technology. Crafted in Bristol, UK, this speaker is the result of over a decade of design evolution, offering a robust anodized aluminium and high-impact ABS construction.
Dimensions - The Minirig Mini 4 in Ultra Black is a portable Bluetooth speaker that represents the latest innovation in audio technology. Crafted in Bristol, UK, this speaker is the result of over a decade of design evolution, offering a robust anodized aluminium and high-impact ABS construction.
Box View - The Minirig Mini 4 in Ultra Black is a portable Bluetooth speaker that represents the latest innovation in audio technology. Crafted in Bristol, UK, this speaker is the result of over a decade of design evolution, offering a robust anodized aluminium and high-impact ABS construction.
Case Closed - The Minirig Mini 4 in Ultra Black is a portable Bluetooth speaker that represents the latest innovation in audio technology. Crafted in Bristol, UK, this speaker is the result of over a decade of design evolution, offering a robust anodized aluminium and high-impact ABS construction.
Case Closed - The Minirig Mini 4 in Ultra Black is a portable Bluetooth speaker that represents the latest innovation in audio technology. Crafted in Bristol, UK, this speaker is the result of over a decade of design evolution, offering a robust anodized aluminium and high-impact ABS construction.
The Minirig Mini 4 in Ultra Black is a portable Bluetooth speaker that represents the latest innovation in audio technology. Crafted in Bristol, UK, this speaker is the result of over a decade of design evolution, offering a robust anodized aluminium and high-impact ABS construction.
The Minirig Mini 4 in Ultra Black is a portable Bluetooth speaker that represents the latest innovation in audio technology. Crafted in Bristol, UK, this speaker is the result of over a decade of design evolution, offering a robust anodized aluminium and high-impact ABS construction.
Top View - The Minirig Mini 4 in Ultra Black is a portable Bluetooth speaker that represents the latest innovation in audio technology. Crafted in Bristol, UK, this speaker is the result of over a decade of design evolution, offering a robust anodized aluminium and high-impact ABS construction.
Rear View - The Minirig Mini 4 in Ultra Black is a portable Bluetooth speaker that represents the latest innovation in audio technology. Crafted in Bristol, UK, this speaker is the result of over a decade of design evolution, offering a robust anodized aluminium and high-impact ABS construction.
In Hand - The Minirig Mini 4 in Ultra Black is a portable Bluetooth speaker that represents the latest innovation in audio technology. Crafted in Bristol, UK, this speaker is the result of over a decade of design evolution, offering a robust anodized aluminium and high-impact ABS construction.
Dimensions - The Minirig Mini 4 in Ultra Black is a portable Bluetooth speaker that represents the latest innovation in audio technology. Crafted in Bristol, UK, this speaker is the result of over a decade of design evolution, offering a robust anodized aluminium and high-impact ABS construction.
Box View - The Minirig Mini 4 in Ultra Black is a portable Bluetooth speaker that represents the latest innovation in audio technology. Crafted in Bristol, UK, this speaker is the result of over a decade of design evolution, offering a robust anodized aluminium and high-impact ABS construction.
Case Closed - The Minirig Mini 4 in Ultra Black is a portable Bluetooth speaker that represents the latest innovation in audio technology. Crafted in Bristol, UK, this speaker is the result of over a decade of design evolution, offering a robust anodized aluminium and high-impact ABS construction.
Case Closed - The Minirig Mini 4 in Ultra Black is a portable Bluetooth speaker that represents the latest innovation in audio technology. Crafted in Bristol, UK, this speaker is the result of over a decade of design evolution, offering a robust anodized aluminium and high-impact ABS construction.
The Minirig Mini 4 in Ultra Black is a portable Bluetooth speaker that represents the latest innovation in audio technology. Crafted in Bristol, UK, this speaker is the result of over a decade of design evolution, offering a robust anodized aluminium and high-impact ABS construction.
Minirig

Minirig 4 | Bluetooth Travel Speaker | Ultra Black

£170.00
/
Tax included. Shipping calculated at checkout.
  • Free UK shipping on orders over £85
  • In stock, ready to ship
  • Back in stock May 1, 2026

Bring the bass. Powerful, portable, and built to go further.

The Minirig 4 in Ultra Black brings together over a decade of audio development into a compact, high-output Bluetooth speaker. Designed and built in Bristol, it combines a large battery, custom driver, and serious amplification in a form that fits in the palm of your hand.

Rooted in the Bristol underground scene, Minirig speakers are known for their clarity, punch, and depth. The sound stays precise at higher volumes, with bass that carries far beyond what you’d expect from its size. Pair two for true stereo, or link multiple units via Bluetooth or aux to build a full system.

At its core is a custom 70mm neodymium driver powered by a 50W amplifier, delivering a frequency response of 60Hz–18kHz. Battery life ranges from around 5 hours at full volume to up to 100 hours at lower levels, with fast USB-C charging when you need it.

  • Battery life (max volume): 5 hours
  • Battery life (average use): 30 hours
  • Battery life (low volume): up to 100 hours
  • Charge time: 6 hours (standard) / 1.5 hours (USB-C fast charge)
  • Amplifier: 50W RMS

Built from anodised aluminium with a splash-resistant finish, it’s designed to handle everyday use. Bluetooth with AAC, wireless stereo pairing, and a dedicated app give you full control, while the internal battery can also be used as a power bank when needed.

Compact, powerful, and made to last - a portable speaker that delivers far beyond its size.

Minirig started in Bristol with a focus on one thing - sound. What began as an independent project has grown into a cult favourite, known for its uncompromising approach to performance and durability.

Each speaker is still designed and assembled in the UK, with an emphasis on engineering over excess. Rather than chasing trends, Minirig focuses on the fundamentals - efficient drivers, powerful amplification, and a form that delivers serious output from a compact design.

The modular system is central to the brand. A single speaker stands on its own, but the setup expands easily - stereo, added low-end, and scalable configurations.

Built to be repaired, not replaced, Minirigs are designed for long-term use. It’s a considered alternative to disposable audio, rooted in Bristol and built around doing things properly.

  • Driver | Custom 70mm with neodymium motor system
  • Frequency response | 60-18000Hz
  • Battery life max volume | 5 hours
  • Battery life average use | 30 hours
  • Battery life low volumes | up to 100 hours
  • Charge time 6 hours at 4.5w or 1.5 hours with fast USB-C at 30w
  • Amplifier power | 1 x 50W
  • Audio input/out | 2 x 3.5mm mini jack socket
  • Made of anodised aluminium and ABS / polycarbonate
  • Splash Resistant
  • Bluetooth 5 with AAC and wireless stereo (needs x2 speakers)
  • Bluetooth range 10-30 m
  • USB-C power delivery up to 30w (charging other devices)
  • IOS, Android and Chrome App 
  • Dimensions | D. 102mm H.73mm
  • Weight | 563g
  • Minirig 4 Speaker
  • audio cable
  • USB-C charger cable
  • carry case
  • a whole load of bass!

We ship to all UK Mainland addresses.

Shipping choices and charges are calculated by weight and size and we offer the following shipping options:
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Small items + large letter size (parcels up to 250g) :

Royal Mail 24: (delivery aim next working day but not guaranteed; fully tracked): £6.00

Royal Mail 48: (delivery aim 2/3 working days but not guaranteed; fully tracked): £4.50
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Standard Parcels (up to 3kg) :

Royal Mail 24: (delivery aim next working day but not guaranteed; fully tracked): £8.00

Royal Mail 48: (delivery aim 2/3 working days but not guaranteed; fully tracked): £6.50

Royal Mail Special Delivery: (next day guaranteed service; fully tracked): £10.00
Note. this service has a 2kg limit (rather than 3kg)
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Large Parcels (3kg +) :

Royal Mail 24: (delivery aim next working day but not guaranteed; fully tracked): £12.00

Royal Mail 48: (delivery aim 2/3 working days but not guaranteed; fully tracked): £10.00

Royal Mail Special Delivery: (next day guaranteed service; fully tracked): £15.00
Note. this service is for 2kg+ (rather than 3kg+)
__________________________________________________________

General

Any order over £85 is free delivery and will be shipped using a Tracked 48 service unless another service is specified.

Delivery methods are auto-calculated at checkout and are dependent on size and weight.

Orders received by 1 pm will usually be dispatched same day. Orders received after 1pm will ship on the next available working day (Mon-Fri).

Note: We do not usually dispatch orders on Saturdays or Sundays.

This site is protected by hCaptcha and the hCaptcha Privacy Policy and Terms of Service apply.

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Minirig | FAQs

Minirigs are designed and built in Bristol, UK.

Minirig has been building soundsystems in Bristol since 2000

Yes. For Ios and Android. Downable from the stores.

Yes, as bluetooth Speakers you can link many Minirigs together. Minirig themselves have had 80 linked together!

You must check the charging current requirement on your Minirig product against the current rating of your USB power supply. However, most modern phone chargers are more than adequate for all Minirig products.

It is fine to use the Minirig while it is on charge however we do not recommend leaving it permanently connected to a power supply.