Short answer: the Sony ULT Field 1 if sound quality matters most, the Doss E-Go II if price matters most. The Sony ULT Field 1 ranks #81 of 144 medium speakers, rated 3.1/5, at $98. The Doss E-Go II ranks #118, rated 2.5/5, at $29.90, $68.10 cheaper.
What the Sony ULT Field 1 does well: IP67 rated, survives drops and 1m submersion. Watch for: Upper midrange peak, rolled off treble.
What the Doss E-Go II does well: Very portable (water bottle sized), truly waterproof (IPX6), 12-hour battery life, excellent value for money, fast Bluetooth pairing. Watch for: Horribly bad unless turned up, still not great.
Buy the Sony ULT Field 1 if sound quality is the priority over the price, or the Doss E-Go II if the price is the priority over sound quality.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Sony ULT Field 1 | Doss E-Go II | |
|---|---|---|
| Price | $98.00 | $29.90 |
| Ranked | #81 of 144 in Medium Size Portable Bluetooth Speakers | #118 of 144 in Medium Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | No | Yes |
| Battery Life | 12 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| Built-in Microphone | Yes | Yes |
| EQ | Yes | No |
| IP Rating | IP67 | IPX6 |
| Party Mode | Yes (Party Connect up to 100 speakers) | - |
| Power Bank | No | - |
| Power Input | USB-C | Micro USB |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| TWS | Yes | No |
| Weight | 1.4 lbs (650 g) | 0.9 lbs (399 g) |
| Bluetooth Codecs | AAC, SBC | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.3 | 4.1 |
| Dimensions | 8.1” x 3” x 3” (206 x 77 x 76 mm) | 7.8” x 2.5” x 2” (198 x 63 x 51 mm) |
| Drivers | 83mm x 42mm woofer, 16mm tweeter + passive radiator | 2x 6W full-range drivers + 1x passive radiator |
| Digital Aux Input | No | No |
| Strap | Yes (detachable strap) | - |
| Bass Extension (-10dB) | - | 120Hz |
| MicroSD Playback | - | Yes |
| Amplifier Power | - | 12W |
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- Sony ULT Field 1 vs Soundcore Motion 300
- Soundcore Motion+ vs Sony ULT Field 1
- Soundcore Boost “upgraded” 2021 vs Sony ULT Field 1
- Sony ULT Field 1 vs Minirig 4
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 1: $98.00 Amazon eBay
Older models: the Sony XB23 (rated 3.3/5) and the Sony SRS-XB20 (rated 2.8/5).
Pros: IP67 rated, survives drops and 1m submersion. Real-world battery around 28+ hours with ULT (bass boost) mode off. Stereo-pairs with a second ULT Field 1.
Cons: Upper midrange peak, rolled off treble
Full Sony ULT Field 1 review and specifications →
| App | Yes |
|---|---|
| Aux Input | No |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth Codecs | AAC, SBC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 8.1” x 3” x 3” (206 x 77 x 76 mm) |
| Drivers | 83mm x 42mm woofer, 16mm tweeter + passive radiator |
| EQ | Yes |
| IP Rating | IP67 |
| Omnidirectional | No |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No |
| Strap | Yes (detachable strap) |
| TWS | Yes |
| Weight | 1.4 lbs (650 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Sony ULT Field 1 vs JBL Grip
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Doss E-Go II: $29.90 Amazon eBay
Pros: Very portable (water bottle sized), truly waterproof (IPX6), 12-hour battery life, excellent value for money, fast Bluetooth pairing. Measured bass extension of 120Hz (-10dB).
Cons: Horribly bad unless turned up, still not great
Full Doss E-Go II review and specifications →
| Amplifier Power | 12W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 120Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 4.1 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 7.8” x 2.5” x 2” (198 x 63 x 51 mm) |
| Drivers | 2x 6W full-range drivers + 1x passive radiator |
| EQ | No |
| IP Rating | IPX6 |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Power Input | Micro USB |
| Stereo | Yes |
| TWS | No |
| Weight | 0.9 lbs (399 g) |
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
- Head-to-Head Comparisons
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