Short answer: the Minirig 2. It ranks #8 of 134 medium speakers at $140; the Sony ULT Field 3 ranks #57 and costs $148, so there is not much of a tradeoff to weigh.
The case for the Minirig 2: Modular, can easily attach a subwoofer. Set against that: Not stereo.
What the Sony ULT Field 3 gets right: IP67 rated, dustproof and water resistant. The catch: Sounds a bit hollow, a bit boosted in the treble.
One note: the Minirig 2 is discontinued, but it still ranks #8 of 134 medium speakers, ahead of most of what is still sold new, so it is worth considering used.
Buy the Minirig 2 if the ranking matters more than the price. Buy the Sony ULT Field 3 if the price matters more than the ranking.
Specifications Side By Side
| Minirig 2 | Sony ULT Field 3 | |
|---|---|---|
| Price | $140 Discontinued | $148 |
| Ranked | #8 of 134 in Medium Size Portable Bluetooth Speakers | #57 of 134 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | Yes | No |
| Aux Latency | 0ms | - |
| Bass Extension (-10dB) | 54Hz | - |
| Battery Life | 40 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Built in Microphone | No | Yes |
| EQ | Yes | Yes (App + ULT button) |
| IP Rating | Splash resistant | IP67 |
| Max Volume | 95dB | - |
| Power Bank | No | Yes |
| Power Input | Proprietary USB cable | USB-C |
| Stereo | No | Yes |
| TWS | Yes (cable) | Yes |
| Weight | 1.1 lbs / 488 g | 2.6 lbs / 1.2 kg |
| Bluetooth Codecs | aptX | SBC, AAC, LDAC |
| Bluetooth Latency | 150ms (1 speaker) / 500ms (2 speakers stereo) | - |
| Bluetooth Version | 4.2 | 5.2 |
| Drivers | 70mm speaker driver | 1x 20mm tweeter + 1x 86mm x 46mm woofer |
| Discontinued | Yes | - |
| Output Power | 15W | 27W |
| Dimensions | Approximately 102 x 76 mm (diameter x height) | 10.1" x 4.5" x 3.1" (256 x 113 x 79 mm) |
| Party Mode | - | Yes (Party Connect up to 100 speakers) |
The Two Speakers In Full
Minirig 2: $140 Discontinued
Pros: Modular, can easily attach a subwoofer.
Cons: Not stereo. Calls itself splash resistant and has no official water rating. App is buggy. Wireless TWS pairing is buggy. A bit expensive. Has reliability issues more often than any other speaker. Discontinued.
| App | Yes |
|---|---|
| Aux Input | Yes |
| Aux Latency | 0ms |
| Bass Extension (-10dB) | 54Hz |
| Battery Life | 40 hours (Manufacturer specified) |
| Bluetooth Codecs | aptX |
| Bluetooth Latency | 150ms (1 speaker) / 500ms (2 speakers stereo) |
| Bluetooth Version | 4.2 |
| Built in Microphone | No |
| Dimensions | Approximately 102 x 76 mm (diameter x height) |
| Discontinued | Yes |
| Drivers | 70mm speaker driver |
| EQ | Yes |
| IP Rating | Splash resistant |
| Max Volume | 95dB |
| Output Power | 15W |
| Power Bank | No |
| Power Input | Proprietary USB cable |
| Stereo | No |
| TWS | Yes (cable) |
| Weight | 1.1 lbs / 488 g |
- Reviews, Comparisons and Sound Samples
- Buy Used
- Head-to-Head Comparisons
- Links
Sony ULT Field 3: $148 Amazon
Pros: IP67 rated, dustproof and water resistant. 24 hour battery life. App with 10-band EQ. Party Connect with up to 100 speakers. USB-C in/out for charging your phone.
Cons: Sounds a bit hollow, a bit boosted in the treble.
| App | Yes |
|---|---|
| Aux Input | No |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.2 |
| Built in Microphone | Yes |
| Dimensions | 10.1" x 4.5" x 3.1" (256 x 113 x 79 mm) |
| Drivers | 1x 20mm tweeter + 1x 86mm x 46mm 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 | 2.6 lbs / 1.2 kg |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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- Sony ULT Field 3 vs Marshall Emberton III
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- Sony ULT Field 3 vs JBL Charge 5
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- Sony ULT Field 3 vs Sonos Roam
- Sony ULT Field 3 vs Sonos Roam 2
- Sony ULT Field 3 vs Sony SRS-XB20
- Sony ULT Field 3 vs Sony XB33
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- Sony ULT Field 3 vs Ultimate Ears Boom 3
- 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.