These are not really the same size class, and that is the honest framing here. The Minirig 4 with subwoofer ranks #5 of 82 large speakers by sound quality at $290; the Zealot ZE51 ranks #16 of 76 boombox speakers by sound quality at $296.39.
What the Minirig 4 with subwoofer does well: Very balanced sound. Watch for: Not stereo, app is buggy.
The case for the Zealot ZE51: Cleaner sound and a wider stereo soundstage than the Zealot ZE41, with less distortion at high volume for better instrumental detail and clarity. The tradeoff: The Zealot ZE41 still wins on raw bass depth and price.
Buy the Minirig 4 with subwoofer at $290 for a large speaker, or the Zealot ZE51 at $296.39 for a boombox speaker instead.
If battery life is a priority, the Minirig 4 with subwoofer is rated for 30 hours versus 4 hours for the Zealot ZE51.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Minirig 4 with subwoofer | Zealot ZE51 | |
|---|---|---|
| Price | $290 | $296.39 after coupon |
| Ranked | #5 of 82 in Large Size Portable Bluetooth Speakers | #16 of 76 in Boombox Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | Yes | Yes |
| Aux Latency | 0ms | - |
| Battery Life | 30 hours (Manufacturer specified) | 4 hours (Manufacturer specified) |
| EQ | Yes | Yes (Hi-Res, 3D Surround, Extra Bass, Vocal and other sound modes) |
| IP Rating | Splash resistant | IPX5 |
| Bluetooth Latency | 60ms | - |
| Power Bank | Yes (USB-C) | Yes (USB-A + USB-C) |
| Power Input | USB-C | Type-C |
| Stereo | No | Yes |
| Omnidirectional | Pointing up | No |
| TWS | Yes (Bluetooth or cable) | Yes |
| Weight | 3.2 lbs (1.44 kg) | 26 lbs (11.81 kg) |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| Built-in Microphone | Yes | - |
| Party Mode | No | - |
| Bluetooth Version | 5.0 | 5.3 |
| Dimensions | 4” x 2.9” (101.6 x 73 mm) (diameter x height) | 22.1” x 9.4” x 13” (562 x 238 x 331 mm) |
| Drivers | 70mm custom driver | 1x 133mm + 2x 93mm + 2x 45mm |
| Frequency Response | 60Hz - 18kHz (Manufacturer specified) | 20Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | 50W | 250W |
| Digital Aux Input | No | No |
| Battery Capacity | - | 48000mAh (12x4000mAh) |
| Microphone Input | - | Yes (Karaoke mode) |
| MicroSD Playback | - | Yes |
| USB Playback | - | Yes |
| Strap | - | Yes (strap) |
Related Speaker Comparisons
More worthwhile head-to-heads for Minirig 4 with subwoofer:
- Minirig 4 with subwoofer vs Vifa Helsinki
- JBL Xtreme 5 vs Minirig 4 with subwoofer
- Minirig 4 with subwoofer vs Tribit Stormbox Lava
- Brane X vs Minirig 4 with subwoofer
- Minirig 3 with subwoofer vs Minirig 4 with subwoofer
Prices on this page were last checked September 26, 2026 at 11:14 PM 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
Minirig 4 with subwoofer: $290 Minirigs eBay
Older model: the Minirig 2 with subwoofer (rated 4.5/5).
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 Brane X
- 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 II
- See all 49 comparisons
Zealot ZE51: $296.39 after coupon Amazon AliExpress eBay
Pros: Cleaner sound and a wider stereo soundstage than the Zealot ZE41, with less distortion at high volume for better instrumental detail and clarity.
Cons: The Zealot ZE41 still wins on raw bass depth and price. Large and heavy like the rest of the boombox class, and clarity still isn’t up to dedicated hi-fi speakers.
Full Zealot ZE51 review and specifications →
| Amplifier Power | 250W |
|---|---|
| App | Yes |
| Aux Input | Yes |
| Battery Capacity | 48000mAh (12x4000mAh) |
| Battery Life | 4 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.3 |
| Digital Aux Input | No |
| Dimensions | 22.1” x 9.4” x 13” (562 x 238 x 331 mm) |
| Drivers | 1x 133mm + 2x 93mm + 2x 45mm |
| EQ | Yes (Hi-Res, 3D Surround, Extra Bass, Vocal and other sound modes) |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX5 |
| MicroSD Playback | Yes |
| Microphone Input | Yes (Karaoke mode) |
| Omnidirectional | No |
| Power Bank | Yes (USB-A + USB-C) |
| Power Input | Type-C |
| Stereo | Yes |
| Strap | Yes (strap) |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 26 lbs (11.81 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Zealot ZE51 vs Zealot ZE41
- Zealot ZE51 vs Harman Kardon Onyx Studio 9
- Zealot ZE51 vs Zealot ZE21
- Zealot ZE51 vs Harman Kardon Onyx Studio 7
- Zealot ZE51 vs Zealot S89
- Zealot ZE51 vs Harman Kardon Onyx Studio 6
- Zealot ZE51 vs JBL Boombox 4
- Zealot ZE51 vs Harman Kardon Onyx Studio 8
- See all 65 comparisons