Short answer: the Minirig mk4 with subwoofer for the higher ranking, the Sony ULT Field 5 for the lower price. The Minirig mk4 with subwoofer ranks #5 of 75 large speakers at $290. The Sony ULT Field 5 ranks #40 at $198, $92 cheaper.
The case for the Minirig mk4 with subwoofer: Very balanced sound. Set against that: Not stereo, app is buggy.
What the Sony ULT Field 5 gets right: IP67 rated, dustproof and water resistant. The catch: Bass not as deep as others in the category, and sound quality overall is just okay.
Buy the Minirig mk4 with subwoofer if the ranking matters more than the price. Buy the Sony ULT Field 5 if the price matters more than the ranking.
Specifications Side By Side
| Minirig mk4 with subwoofer | Sony ULT Field 5 | |
|---|---|---|
| Price | $290 | $198 |
| Ranked | #5 of 75 in Large Size Portable Bluetooth Speakers | #40 of 75 in Large Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | Yes | Yes |
| Aux Latency | 0ms | - |
| Battery Life | 30 hours (Manufacturer specified) | 25 hours (Manufacturer specified) |
| EQ | Yes | Yes (App + ULT button) |
| IP Rating | Splash resistant | IP67 |
| Bluetooth Latency | 60ms | - |
| Power Bank | Yes | Yes |
| Power Input | USB-C | USB-C |
| Stereo | No | Yes |
| TWS | Yes (Bluetooth or cable) | Yes |
| Weight | 3.2 lbs / 1.44 kg | 7.3 lbs / 3.3 kg |
| Bluetooth Codecs | SBC | SBC, AAC, LDAC |
| Built in Microphone | Yes | Yes |
| Party Mode | No | Yes (Party Connect up to 100 speakers) |
| Bluetooth Version | 5.0 | 5.3 |
| Dimensions | 4.0" diameter x 2.9" H (101.6 x 73mm) | 12.6" x 5.67" x 4.92" (320 x 144 x 125 mm) |
| Drivers | 70mm custom driver | 2x 46mm tweeters + 1x 79mm x 107mm woofer |
| Frequency Response | 60Hz - 18kHz (Manufacturer specified) | - |
| Output Power | 50W | 27W |
The Two Speakers In Full
Minirig mk4 with subwoofer: $290 Minirigs
Pros: Very balanced sound. Finally USB-C charging
Cons: Not stereo, app is buggy. Wireless TWS pairing 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
| 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 |
| Dimensions | 4.0" diameter x 2.9" H (101.6 x 73mm) |
| Drivers | 70mm custom driver |
| EQ | Yes |
| Frequency Response | 60Hz - 18kHz (Manufacturer specified) |
| IP Rating | Splash resistant |
| Output Power | 50W |
| Party Mode | No |
| Power Bank | Yes |
| Power Input | USB-C |
| Stereo | No |
| TWS | Yes (Bluetooth or cable) |
| Weight | 3.2 lbs / 1.44 kg |
- Reviews, Comparisons and Sound Samples
- Joy & Oluv’Sone: Minirigs 4 with Sub 4 vs JBL Xtreme 5 - 1st impressions
- Alan Ross Reviews: Minirig 2.1 or the Brane X or the Harman Kardon Go Play 3?
- 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
- Links
Sony ULT Field 5: $198 Amazon
Pros: IP67 rated, dustproof and water resistant. 25 hour battery life. App with 10-band EQ. Party Connect with up to 100 speakers. USB-C in/out for charging your phone.
Cons: Bass not as deep as others in the category, and sound quality overall is just okay. ULT button makes a really loud tone when pressed. Just an okay speaker.
| App | Yes |
|---|---|
| Aux Input | Yes |
| Battery Life | 25 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.3 |
| Built in Microphone | Yes |
| Dimensions | 12.6" x 5.67" x 4.92" (320 x 144 x 125 mm) |
| Drivers | 2x 46mm tweeters + 1x 79mm x 107mm woofer |
| EQ | Yes (App + ULT button) |
| IP Rating | IP67 |
| Output Power | 27W |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 7.3 lbs / 3.3 kg |
- Reviews, Comparisons and Sound Samples
- Danny Pops: Don’t TOUCH that ULT Button! Sony ULT Field 5 Review
- Mark Ellis Reviews: Sony just changed summer sound 🤨 | Sony ULT Field 5 & 3 Review
- Dominik Reviews: Sony ULT Field 5 vs JBL Xtreme 4 - Outdoor Sound Test - Sony shines or not?
- Joy & Oluv’Sone: Sony ULT Field 5 vs Anker SoundCore Boom 2 - listening test
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- Sony ULT Field 5 vs Minirig mk2 with subwoofer
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- Links
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Product prices and availability were last checked August 9, 2026 at 6:57 AM UTC 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.