These are not really the same size class, and that is the honest framing here. The Sony ULT Field 5 ranks #44 of 82 large speakers by sound quality at $198; the Sonos Roam 2 ranks #76 of 144 medium speakers by sound quality at $179.
The case for the Sony ULT Field 5: A tough 3.3kg portable with IP67 protection, LDAC/AAC support, aux input, a 10-band app EQ, Party Connect, USB-C power-bank output and a claimed 25-hour battery. The catch: It prioritizes bass and loudness over fidelity: reviews find the upper mids and highs subdued, with limited stereo separation and soundstage depth.
Why pick the Sonos Roam 2: Very neutral. Watch for: Exact same sound quality as the original Roam.
Buy the Sony ULT Field 5 ($198) for a large speaker; the Sonos Roam 2 ($179) suits a medium speaker instead.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Sony ULT Field 5 | Sonos Roam 2 | |
|---|---|---|
| Price | $198 | $179.00 |
| Ranked | #44 of 82 in Large Size Portable Bluetooth Speakers | #76 of 144 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Sonos S2 App |
| Aux Input | Yes | No |
| Battery Life | 25 hours (Manufacturer specified) | 10 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC, AAC |
| Bluetooth Version | 5.3 | 5.2 |
| Built-in Microphone | Yes | Yes |
| Dimensions | 12.6” x 5.7” x 4.9” (320 x 144 x 125 mm) | 2.4” x 6.6” x 2.4” (62 x 168 x 60 mm) |
| Drivers | 2x 46mm tweeters + 1x 79mm x 107mm woofer | 1x ~45mm racetrack mid-woofer + 1x tweeter + 2x passive radiators |
| EQ | Yes (App + ULT button) | Yes (via app, limited in Bluetooth mode) |
| IP Rating | IP67 | IPX5 |
| Party Mode | Yes (Party Connect up to 100 speakers) | - |
| Power Bank | Yes (USB-C) | - |
| Power Input | USB-C | USB-C |
| Stereo | Yes | No |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 7.3 lbs (3.3 kg) | 0.9 lbs (429 g) |
| Amplifier Power | 27W | - |
| Digital Aux Input | No | No |
| Strap | Yes (detachable shoulder strap) | No |
| Bass Extension (-10dB) | - | 63Hz |
| Wi-Fi | - | Yes |
| Voice Assistants | - | Amazon Alexa (Sonos Voice Control also built in) |
| Maximum SPL | - | 95dB (Manufacturer specified) |
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- Minirig 4 vs Sonos Roam 2
- B&O Beosound A1 2nd gen vs Sonos Roam 2
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
Sony ULT Field 5: $198 Amazon eBay
Older models: the Sony SRS-XB43 (rated 3.5/5) and the Sony SRS-XG300 (rated 3.1/5).
Pros: A tough 3.3kg portable with IP67 protection, LDAC/AAC support, aux input, a 10-band app EQ, Party Connect, USB-C power-bank output and a claimed 25-hour battery. Reviews find it energetic and dynamic with substantial bass, enough volume for a yard, and two ULT modes that let bass-focused listeners choose a deeper or punchier presentation.
Cons: It prioritizes bass and loudness over fidelity: reviews find the upper mids and highs subdued, with limited stereo separation and soundstage depth. Deep bass is less authoritative than the enclosure suggests, and the loud confirmation tone when pressing the ULT button is an unnecessary annoyance. Use the app EQ and audition it before buying for detail-focused music.
Full Sony ULT Field 5 review and specifications →
| Amplifier Power | 27W |
|---|---|
| App | Yes |
| Aux Input | Yes |
| Battery Life | 25 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 12.6” x 5.7” x 4.9” (320 x 144 x 125 mm) |
| Drivers | 2x 46mm tweeters + 1x 79mm x 107mm 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) |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | Yes (detachable shoulder strap) |
| TWS | Yes |
| Weight | 7.3 lbs (3.3 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Danny Pops: Don’t TOUCH that ULT Button! Sony ULT Field 5 Review More from DannyPops →
- 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? More from Dominik Reviews →
- Joy & Oluv’Sone: Sony ULT Field 5 vs Anker SoundCore Boom 2 - listening test More from Oluv’Sone →
- Mateusz Cholewa: SONY ULT Field 5 vs BOGASING S8 PRO MAX More from Mateusz Cholewa →
- Head-to-Head Comparisons
Sonos Roam 2: $179.00 Amazon eBay
Older model: the Sonos Roam (rated 3.1/5).
Pros: Very neutral. Additional button for pairing instead of being shared with power button. Measured bass extension of 63Hz (-10dB).
Cons: Exact same sound quality as the original Roam. Bass extension isn’t very good. Not stereo. Gets distorted as you turn up the bass.
Full Sonos Roam 2 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 | 5.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 2.4” x 6.6” x 2.4” (62 x 168 x 60 mm) |
| Drivers | 1x ~45mm racetrack mid-woofer + 1x tweeter + 2x passive radiators |
| EQ | Yes (via app, limited in Bluetooth mode) |
| IP Rating | IPX5 |
| Maximum SPL | 95dB (Manufacturer specified) |
| Omnidirectional | No |
| Power Input | USB-C |
| Stereo | No |
| Strap | No |
| TWS | Yes |
| Voice Assistants | Amazon Alexa (Sonos Voice Control also built in) |
| Weight | 0.9 lbs (429 g) |
| Wi-Fi | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons