Short answer: the Roam for tuning, the Wonderboom 4 for size. The Ultimate Ears Wonderboom 4’s advantage is small size, but its bass isn’t as deep as the top-ranked speakers and is a little thuddy. The Sonos Roam is very neutral and IP67 rated at ~1 lbs (454 g), though its bass extension isn’t very good.
Buy the Ultimate Ears Wonderboom 4 new; the Sonos Roam is no longer sold new, so it only makes sense as a used find.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Sonos Roam | Ultimate Ears Wonderboom 4 | |
|---|---|---|
| Price | $179.99 Discontinued | $78.95 |
| Ranked | #93 of 164 in Medium Size Portable Bluetooth Speakers | #106 of 164 in Medium Size Portable Bluetooth Speakers |
| Bass Extension (-10dB) | 63Hz | - |
| Battery Life | 10 hours (Manufacturer specified) | 14 hours (Manufacturer specified) |
| Maximum SPL | 95dB (measured by Alan Ross Reviews) | 87dB (Manufacturer specified) |
| Stereo | No | No |
| Omnidirectional | No | Yes |
| Weight | 0.9 lbs (429 g) | 0.9 lbs (420 g) |
| Wi-Fi | Yes | - |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.0 | 5.2 |
| Dimensions | 2.4” x 6.6” x 2.4” (62 x 168 x 60 mm) | 4.1” x 3.8” (104 x 95.3 mm) |
| App | Sonos S2 App | No |
| Bluetooth Codecs | SBC, AAC | SBC |
| Built-in Microphone | Yes | No |
| Voice Assistants | Amazon Alexa or Google Assistant (choose one) plus Sonos Voice Control | - |
| EQ | Yes (via app, limited in Bluetooth mode) | No |
| Drivers | Dual full-range drivers + passive radiators | 2x 40mm active drivers + 2x passive radiators (46.1 x 65.2mm) |
| IP Rating | IPX5 | IP67 |
| Digital Aux Input | No | No |
| Aux Input | No | No |
| TWS | Yes | Yes |
| Power Input | USB-C | USB-C |
| Strap | No | Yes (built-in loop) |
| Party Mode | - | No |
| Power Bank | - | No |
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Prices on this page were last checked October 4, 2026 at 9:58 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
Sonos Roam: $179.99 Discontinued Amazon eBay
Newer model: the Sonos Roam 2, ranked higher, rated 3.2/5.
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 | Yes |
| 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) |
| 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 |
| Strap | 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
Ultimate Ears Wonderboom 4: $78.95 Amazon eBay
Older models: the Ultimate Ears Wonderboom 3 (ranked lower, rated 2.9/5), the Ultimate Ears Wonderboom 2 (ranked lower, rated 2.9/5) and the Ultimate Ears Wonderboom (ranked lower, rated 2.9/5).
Pros: Small size.
Cons: Bass isn’t as deep as the top-ranked speakers and is a little thuddy. Not much improvement over the previous Ultimate Ears Wonderboom 3 besides the USB-C charging port.
Full Ultimate Ears Wonderboom 4 review and specifications →
| App | No |
|---|---|
| Aux Input | No |
| Battery Life | 14 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.2 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 4.1” x 3.8” (104 x 95.3 mm) |
| Drivers | 2x 40mm active drivers + 2x passive radiators (46.1 x 65.2mm) |
| EQ | No |
| IP Rating | IP67 |
| Maximum SPL | 87dB (Manufacturer specified) |
| Omnidirectional | Yes |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No |
| Strap | Yes (built-in loop) |
| TWS | Yes |
| Weight | 0.9 lbs (420 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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