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 #99 of 179 medium speakers, rated 3.1/5, at $138. The DOSS E-Go II ranks #148, rated 2.5/5, at $39.90, $98.10 cheaper.
The Sony ULT Field 1 is the better-sounding choice. A tough, waterproof small speaker that survives drops, with long real world battery life and stereo pairing. It has an adjustable EQ, which the DOSS E-Go II lacks. It charges over USB-C rather than Micro USB. Watch for: Upper midrange peak, rolled off treble.
The DOSS E-Go II is the lighter pick. A water bottle sized stereo speaker with water resistance and quick pairing, light enough for a cup holder or bag. At 0.9 lbs (399 g) it weighs much less than the Sony ULT Field 1 at 1.4 lbs (650 g). It keeps a wired aux input, which the Sony ULT Field 1 lacks. It plays in stereo from a single unit, unlike the Sony ULT Field 1. 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.
Prices on this page were last checked November 7, 2026 at 7:34 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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Specifications Side By Side
| Sony ULT Field 1 | DOSS E-Go II | |
|---|---|---|
| Price | $138.00 | $39.90 |
| Ranked | #99 of 179 in Medium Size Portable Bluetooth Speakers | #148 of 179 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 | Yes | Yes |
| 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) | Yes (strap) |
| Bass Extension (-10dB) | - | 120Hz |
| MicroSD Playback | - | Yes |
| Amplifier Power | - | 12W |
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