Short answer: these speakers solve different problems: the Sonos Roam is a compact Wi-Fi extension of a Sonos home, while the Sony ULT Field 3 is a longer-running outdoor Bluetooth speaker. The Roam is unusually neutral for its size, supports Qi charging and voice control, and works with the wider Sonos ecosystem. Its weak bass and distortion when bass is raised keep expectations modest.
The ULT Field 3 costs $138 and brings IP67 protection, a 24-hour claimed battery, USB-C power output, stereo pairing and Party Connect. Its hollow, treble-boosted sound needs careful EQ, and the ULT bass mode disables that custom EQ.
The Roam is the smarter buy only when Wi-Fi and Sonos integration are central. For trips, parties and battery endurance, Sony’s much larger speaker is the more versatile tool.
Buy the Sonos Roam if you want a tiny, neutral speaker that can join a Sonos multi-room system and charge wirelessly.
Buy the Sony ULT Field 3 if you need long battery life, IP67 protection, stereo pairing and phone charging away from home.
Battery life favors the Sony ULT Field 3: rated for 24 hours against 10 hours for the Sonos Roam.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Sonos Roam | Sony ULT Field 3 | |
|---|---|---|
| Price | $179.99 Discontinued | $138.00 |
| Ranked | #75 of 142 in Medium Size Portable Bluetooth Speakers | #60 of 142 in Medium Size Portable Bluetooth Speakers |
| Bass Extension (-10dB) | 63Hz | - |
| Battery Life | 10 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Maximum SPL | 95dB (measured by Alan Ross Reviews) | - |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| Weight | 0.9 lbs (429 g) | 2.6 lbs (1.2 kg) |
| Wi-Fi | Yes | - |
| Bluetooth Version | 5.0 | 5.2 |
| Dimensions | 2.4" x 6.6" x 2.4" (62 x 168 x 60 mm) | 10.1" x 4.4" x 3.1" (256 x 113 x 79 mm) |
| App | Sonos S2 App | Yes |
| Bluetooth Codecs | SBC, AAC | SBC, AAC, LDAC |
| Built-in Microphone | Yes | Yes |
| Voice Assistants | Amazon Alexa or Google Assistant (choose one) plus Sonos Voice Control | - |
| EQ | Yes (via app, limited in Bluetooth mode) | Yes (App + ULT button) |
| Drivers | Dual full-range drivers + passive radiators | 1x 20mm tweeter + 1x 86mm x 46mm woofer |
| IP Rating | IPX5 | IP67 |
| Digital Aux Input | No | No |
| Aux Input | No | No |
| TWS | Yes | Yes |
| Power Input | USB-C | USB-C |
| Discontinued | Yes | - |
| Party Mode | - | Yes (Party Connect up to 100 speakers) |
| Power Bank | - | Yes (USB-C, 5V/1.5A) |
| Amplifier Power | - | 27W |
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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
Sonos Roam: $179.99 Discontinued Amazon eBay
Pros: Very neutral. IP67 rated at ~1 lb. Wireless (Qi) charging - rare for a portable speaker. Works with Alexa/Sonos Voice Control and the wider Sonos ecosystem over Wi-Fi. Measured bass extension of 63Hz (-10dB).
Cons: Bass extension isn’t very good. Not stereo. Gets distorted if you turn up the bass. Discontinued.
Full Sonos Roam review and specifications →
| App | Sonos S2 App |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | 63Hz |
| Battery Life | 10 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC |
| Bluetooth Version | 5.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 2.4" x 6.6" x 2.4" (62 x 168 x 60 mm) |
| Discontinued | Yes |
| Drivers | Dual full-range drivers + passive radiators |
| EQ | Yes (via app, limited in Bluetooth mode) |
| IP Rating | IPX5 |
| Maximum SPL | 95dB (measured by Alan Ross Reviews) |
| Omnidirectional | No |
| Power Input | USB-C |
| Stereo | No |
| TWS | Yes |
| Voice Assistants | Amazon Alexa or Google Assistant (choose one) plus Sonos Voice Control |
| Weight | 0.9 lbs (429 g) |
| Wi-Fi | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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
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