Short answer: the Brane X for sheer bass depth, the Minirig mk4 for even balance. The Brane X has the absolute deepest bass in this category, with boosted upper bass around 120Hz and rolled-off treble as the known cost. The Minirig mk4 with subwoofer sounds very balanced, but it is not stereo and its app is buggy.
What the Brane X gets right: Very deep bass, the absolute deepest from this category. The tradeoff: Boosted upper bass ~120Hz, rolled off treble, so it’s missing detail up top.
On the Minirig mk4 with subwoofer side: Very balanced sound. Set against that: Not stereo, app is buggy.
Buy the Brane X if sound quality matters more than the price. Buy the Minirig 4 with subwoofer if the price matters more than sound quality.
There is a real battery-life gap here: the Minirig 4 with subwoofer is rated for 30 hours, the Brane X only 12 hours.
If water resistance matters to you, the Brane X at IP57 (brief submersion) holds up far better than the Minirig 4 with subwoofer at Splash resistant (splashing).
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Brane X | Minirig 4 with subwoofer | |
|---|---|---|
| Price | $500 | $290 |
| Ranked | #4 of 78 in Large Size Portable Bluetooth Speakers | #5 of 78 in Large Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Aux Latency | 295ms default, 33ms with aux pass-through | 0ms |
| Bass Extension (-10dB) | 31Hz | - |
| Battery Life | 12 hours (Manufacturer specified) | 30 hours (Manufacturer specified) |
| Bluetooth Codecs | aptX HD, aptX, AAC, SBC | SBC |
| IP Rating | IP57 | Splash resistant |
| Bluetooth Latency | 100ms | 60ms |
| Maximum SPL | 106dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (Brane app, up to 8 speakers) | No |
| Power Input | AC Power brick | USB-C |
| Stereo | Yes | No |
| Omnidirectional | No | Pointing up |
| TWS | Yes | Yes (Bluetooth or cable) |
| Weight | 7.7 lbs (3.5 kg) | 3.2 lbs (1.44 kg) |
| Wi-Fi | Yes | - |
| App | No | Yes |
| Built-in Microphone | Yes | Yes |
| Voice Assistants | Amazon Alexa | - |
| EQ | No | Yes |
| Power Bank | No | Yes (USB-C) |
| Dimensions | 9.3" x 7" x 6.1" (236 x 178 x 155 mm) | 4" x 2.9" (101.6 x 73 mm) (diameter x height) |
| Drivers | 2x 2.5" midrange, 2x 0.75" tweeters + 6.5"x9" subwoofer | 70mm custom driver |
| Frequency Response | 30Hz - 20kHz (Manufacturer specified) | 60Hz - 18kHz (Manufacturer specified) |
| Amplifier Power | 200W | 50W |
| Digital Aux Input | No | No |
| Bluetooth Version | 5.1 | 5.0 |
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- Brane X vs Tribit Stormbox Lava
- Brane X vs Minirig 3 with subwoofer
- Brane X vs Soundcore Boom 2
Prices on this page were last checked September 22, 2026 at 5:11 AM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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The Two Speakers In Full
Brane X: $500 Amazon eBay
Pros: The Brane X pairs a dedicated RAD subwoofer with two midrange drivers and two tweeters to achieve extraordinary low bass for a 3.5kg portable: its measured -10dB extension is 31Hz. Independent testing finds it loud, with well-balanced mids, a smooth treble balance and useful bass-level controls; Wi-Fi, AirPlay, Alexa, quality Bluetooth codecs and low-latency aux pass-through make it unusually versatile. Measured bass extension of 31Hz (-10dB).
Cons: The front-facing design has only moderate dispersion, so sound changes noticeably off to the sides or behind it. Bass response shifts at maximum volume, the default aux mode has very high latency, and some listeners find the upper register edgy or need EQ to achieve their preferred balance. Its claimed 12-hour runtime and premium cost make it more of a compact high-end system than a carefree all-day speaker.
Full Brane X review and specifications →
| Amplifier Power | 200W |
|---|---|
| App | No |
| Aux Input | Yes |
| Aux Latency | 295ms default, 33ms with aux pass-through |
| Bass Extension (-10dB) | 31Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth Codecs | aptX HD, aptX, AAC, SBC |
| Bluetooth Latency | 100ms |
| Bluetooth Version | 5.1 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 9.3" x 7" x 6.1" (236 x 178 x 155 mm) |
| Drivers | 2x 2.5" midrange, 2x 0.75" tweeters + 6.5"x9" subwoofer |
| EQ | No |
| Frequency Response | 30Hz - 20kHz (Manufacturer specified) |
| IP Rating | IP57 |
| Maximum SPL | 106dB (measured by Alan Ross Reviews) |
| Omnidirectional | No |
| Party Mode | Yes (Brane app, up to 8 speakers) |
| Power Bank | No |
| Power Input | AC Power brick |
| Stereo | Yes |
| TWS | Yes |
| Voice Assistants | Amazon Alexa |
| Weight | 7.7 lbs (3.5 kg) |
| Wi-Fi | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: This speaker left me shocked! Brane X, they said it defies the laws of physics! More from alanrossreviews →
- Alan Ross Reviews: Brane X vs JBL Xtreme 5: Maximum Bass, No Mercy
- Alan Ross Reviews: JBL Boombox 4 HUMILIATES Brane X?! Ultimate Bass Battle!
- Alan Ross Reviews: Minirig 2.1 or the Brane X or the Harman Kardon Go Play 3?
- mark: Brane X Speaker Review 2
- mark: Brane X Speaker Review
- Head-to-Head Comparisons
Minirig 4 with subwoofer: $290 Minirigs eBay
Pros: Very balanced sound. Finally USB-C charging. Deeper, more impactful bass than the old Sub 3. Subwoofer pairs wirelessly and can be placed anywhere in the room for extra bass. Fine-grained tuning via the app - 5-band EQ plus separate bass/treble and subwoofer controls. Sounded more accurate than the JBL Xtreme 5 in a side-by-side comparison, and the whole 2.1 setup is smaller and lighter than it.
Cons: Not stereo, app is buggy. Not easy to carry on the go, no handle and there’s 2 pieces. Calls itself splash resistant but has no official water rating. A bit expensive. Has reliability issues more often than any other speaker. Default out-of-the-box tuning sounds off and needs a custom EQ to sound its best.
Full Minirig 4 with subwoofer review and specifications →
| Amplifier Power | 50W |
|---|---|
| App | Yes |
| Aux Input | Yes |
| Aux Latency | 0ms |
| Battery Life | 30 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 60ms |
| Bluetooth Version | 5.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 4" x 2.9" (101.6 x 73 mm) (diameter x height) |
| Drivers | 70mm custom driver |
| EQ | Yes |
| Frequency Response | 60Hz - 18kHz (Manufacturer specified) |
| IP Rating | Splash resistant |
| Omnidirectional | Pointing up |
| Party Mode | No |
| Power Bank | Yes (USB-C) |
| Power Input | USB-C |
| Stereo | No |
| TWS | Yes (Bluetooth or cable) |
| Weight | 3.2 lbs (1.44 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Joy & Oluv’Sone: Minirigs 4 with Sub 4 vs JBL Xtreme 5 - 1st impressions More from Oluv’Sone →
- Alan Ross Reviews: Minirig 2.1 or the Brane X or the Harman Kardon Go Play 3? More from alanrossreviews →
- Alan Ross Reviews: Game changer! Minirig wireless portable subwoofer mk4 goes boom!
- Alan Ross Reviews: Minirig 4 vs Minirig 3, stuff they tell you, stuff they don’t! 😂
- Beautiful Zar DJ: MINIRIG 4 Vs MINIRIG 3 (50-100%Volume Audio Test)
- Alan Ross Reviews: A true story: Minirigs 4 with Sub 4 vs JBL Xtreme 5 - 1st impressions
- Head-to-Head Comparisons
- Minirig 4 with subwoofer vs Minirig 3 with subwoofer
- Minirig 4 with subwoofer vs Tribit Stormbox Lava
- Minirig 4 with subwoofer vs Minirig 2 with subwoofer
- Minirig 4 with subwoofer vs JBL Xtreme 5
- Minirig 4 with subwoofer vs Vifa Helsinki
- Minirig 4 with subwoofer vs Soundcore Boom 2
- Minirig 4 with subwoofer vs Marshall Stockwell 2
- Minirig 4 with subwoofer vs Soundcore Motion Boom
- See all 36 comparisons