Short answer: the Miatone Boompro. It ranks #15 of 144 medium speakers by sound quality, rated 4.2/5, at $35.99; the Sony ULT Field 3 ranks #61, rated 3.4/5, and costs $138, so there is little reason to consider the other one.
What the Miatone Boompro does well: Exactly the same as the Wisetiger P3 below. The catch: Slightly less bass extension than higher ranked speakers.
What the Sony ULT Field 3 does well: IP67 rated, dustproof and water resistant. The tradeoff: Sounds a bit hollow, a bit boosted in the treble.
Buy the Miatone Boompro. It is rated higher for sound quality than the Sony ULT Field 3 and costs less, which makes it the one to get unless you need something the other one does better.
Battery life favors the Sony ULT Field 3: rated for 24 hours against 16 hours for the Miatone Boompro.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Miatone Boompro | Sony ULT Field 3 | |
|---|---|---|
| Price | $35.99 | $138.00 |
| Ranked | #15 of 144 in Medium Size Portable Bluetooth Speakers | #61 of 144 in Medium Size Portable Bluetooth Speakers |
| App | No | Yes |
| Aux Input | No | No |
| Battery Life | 16 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| EQ | No | Yes (App + ULT button) |
| IP Rating | IPX7 | IP67 |
| Power Bank | No | Yes (USB-C, 5V/1.5A) |
| Power Input | USB-C | USB-C |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 1.1 lbs (500 g) | 2.6 lbs (1.2 kg) |
| Drivers | Dual drivers | 1x 20mm tweeter + 1x 86mm x 46mm woofer |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) | SBC, AAC, LDAC |
| Lights | Yes | - |
| Dimensions | 7.3”H x 2.8”W x 2.8”D (185 x 71 x 71 mm) | 10.1” x 4.4” x 3.1” (256 x 113 x 79 mm) |
| Amplifier Power | 36W | 27W |
| Bluetooth Version | 5.3 | 5.2 |
| Built-in Microphone | - | Yes |
| Party Mode | - | Yes (Party Connect up to 100 speakers) |
| Strap | - | Yes (detachable shoulder strap) |
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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
Miatone Boompro: $35.99 Amazon eBay
Pros: Exactly the same as the Wisetiger P3 below. By far the best sounding speaker under $50. Actually very well balanced. Very balanced even at full volume. Short press the power button to change the lighting mode.
Cons: Slightly less bass extension than higher ranked speakers.
Full Miatone Boompro review and specifications →
| Amplifier Power | 36W |
|---|---|
| App | No |
| Aux Input | No |
| Battery Life | 16 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.3 |
| Digital Aux Input | No |
| Dimensions | 7.3”H x 2.8”W x 2.8”D (185 x 71 x 71 mm) |
| Drivers | Dual drivers |
| EQ | No |
| IP Rating | IPX7 |
| Lights | Yes |
| Omnidirectional | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No |
| TWS | Yes |
| Weight | 1.1 lbs (500 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Sony ULT Field 3: $138.00 Amazon eBay
Older models: the Sony XB33 (rated 3.4/5), the Sony SRS-XE300 (rated 2.8/5) and the Sony SRS-XB30 (rated 2.6/5).
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. Custom EQ and the ULT bass-boost button can’t be used together - turning on ULT disables the EQ. Bass is very weak with ULT off. Lost to the JBL Charge 6 in a side-by-side comparison despite being the larger speaker.
Full Sony ULT Field 3 review and specifications →
| Amplifier Power | 27W |
|---|---|
| App | Yes |
| Aux Input | No |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 10.1” x 4.4” 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 |
| Omnidirectional | No |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-C, 5V/1.5A) |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | Yes (detachable shoulder strap) |
| TWS | Yes |
| Weight | 2.6 lbs (1.2 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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