Short answer: the Sony ULT Field 3 for water and dust protection, the Sony SRS-XB20 on price. The ULT Field 3 is IP67 rated, dustproof and water resistant, though it sounds a bit hollow with a bit of treble boost. The XB20 costs $9 less and its IPX5 pill shape slides easily into a bag, but it sounds thin at higher volumes.
What the Sony SRS-XB20 gets right: IPX5 rated pill shape slides easily into a bag. The tradeoff: Sounds thin at higher volumes.
On the Sony ULT Field 3 side: IP67 rated, dustproof and water resistant. The catch: Sounds a bit hollow, a bit boosted in the treble.
Buy the Sony SRS-XB20 if the price matters more than sound quality. Buy the Sony ULT Field 3 if sound quality matters more than the price.
There is a real battery-life gap here: the Sony ULT Field 3 is rated for 24 hours, the Sony SRS-XB20 only 12 hours.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Sony SRS-XB20 | Sony ULT Field 3 | |
|---|---|---|
| Price | $129 Discontinued | $138.00 |
| Ranked | #97 of 142 in Medium Size Portable Bluetooth Speakers | #60 of 142 in Medium Size Portable Bluetooth Speakers |
| Aux Input | Yes | No |
| Battery Life | 12 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Party Mode | Yes (Partychain up to 100 speakers) | Yes (Party Connect up to 100 speakers) |
| Weight | 1.3 lbs (590 g) | 2.6 lbs (1.2 kg) |
| IP Rating | IPX5 | IP67 |
| Bluetooth Version | 4.2 | 5.2 |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC, AAC, LDAC |
| Dimensions | 7.8" x 2.7" x 2.7" (198 x 68 x 69 mm) | 10.1" x 4.4" x 3.1" (256 x 113 x 79 mm) |
| Discontinued | Yes | - |
| TWS | Yes | Yes |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| App | Yes (SongPal) | Yes |
| EQ | No | Yes (App + ULT button) |
| Built-in Microphone | Yes | Yes |
| Power Input | Micro USB | USB-C |
| Power Bank | No | Yes (USB-C, 5V/1.5A) |
| Amplifier Power | 20W | 27W |
| Drivers | 2x 42mm full-range drivers + 2x passive radiators | 1x 20mm tweeter + 1x 86mm x 46mm woofer |
| Digital Aux Input | No | No |
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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
Sony SRS-XB20: $129 Discontinued eBay
Pros: Sony SRS-XB20 uses 2x 42mm full-range drivers + 2x passive radiators. Its 590 g, claimed 12 hours (Manufacturer specified) battery life, IPX5 protection, aux input and stereo playback make it a practical option for its intended room or portable use.
Cons: No EQ adjustment. Discontinued.
Full Sony SRS-XB20 review and specifications →
| Amplifier Power | 20W |
|---|---|
| App | Yes (SongPal) |
| Aux Input | Yes |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 4.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 7.8" x 2.7" x 2.7" (198 x 68 x 69 mm) |
| Discontinued | Yes |
| Drivers | 2x 42mm full-range drivers + 2x passive radiators |
| EQ | No |
| IP Rating | IPX5 |
| Omnidirectional | No |
| Party Mode | Yes (Partychain up to 100 speakers) |
| Power Bank | No |
| Power Input | Micro USB |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.3 lbs (590 g) |
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Sony ULT Field 3: $138.00 Amazon eBay
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 |
| TWS | Yes |
| Weight | 2.6 lbs (1.2 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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