These sit in different size classes, so this is not a straight ranking comparison. The Soundcore Boom 2 ranks #10 of 120 large speakers by sound quality at $99.99; the Sony ULT Field 1 ranks #99 of 179 medium speakers by sound quality at $138.
The Soundcore Boom 2 is the longer-running option. A light, waterproof large speaker with deep bass for its size, a 24 hour battery and fun lighting. It is rated for 24 hours of battery against 12 for the Sony ULT Field 1. The tradeoff: Only a single midrange driver, so you only get stereo for the tweeters.
The Sony ULT Field 1 is the lighter choice. A tough, waterproof small speaker that survives drops, with long real world battery life and stereo pairing. At 1.4 lbs (650 g) it weighs much less than the Soundcore Boom 2 at 3.7 lbs (1.68 kg). It supports AAC Bluetooth, which the Soundcore Boom 2 lacks. The catch: Upper midrange peak, rolled off treble.
Buy the Soundcore Boom 2 ($99.99) for a large speaker; the Sony ULT Field 1 ($138) suits a medium speaker instead.
Want more options? Browse the full Portable Bluetooth rankings.
Prices on this page were last checked November 11, 2026 at 3:26 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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Specifications Side By Side
| Soundcore Boom 2 | Sony ULT Field 1 | |
|---|---|---|
| Price | $99.99 | $138.00 |
| Ranked | #10 of 120 in Large Size Portable Bluetooth Speakers | #99 of 179 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | No | No |
| Bass Extension (-10dB) | 47Hz | - |
| Battery Life | 24 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | AAC, SBC |
| Built-in Microphone | No | Yes |
| EQ | Yes | Yes |
| IP Rating | IPX7 | IP67 |
| Bluetooth Latency | 125ms | - |
| Maximum SPL | 105dB (measured by Alan Ross Reviews) | - |
| MicroSD Playback | No | - |
| Party Mode | Yes (PartyCast 2.0 up to 100 speakers) | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-A) | No |
| Power Input | USB-C | USB-C |
| Stereo | Partially (1 woofer) | No |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 3.7 lbs (1.68 kg) | 1.4 lbs (650 g) |
| Bluetooth Version | 5.3 | 5.3 |
| Dimensions | 11.7” x 7.3” x 4” (297 x 185 x 102 mm) | 8.1” x 3” x 3” (206 x 77 x 76 mm) |
| Drivers | 120mm x 90mm woofer, 2x 20mm tweeters | 83mm x 42mm woofer, 16mm tweeter + passive radiator |
| Frequency Response | 45Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 80W | - |
| Digital Aux Input | No | No |
| Lights | Yes | - |
| Strap | No | Yes (detachable strap) |
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