Short answer: the TOZO PA1. It ranks #60 of 179 medium speakers by sound quality, rated 3.5/5, at $39.99; the Sony ULT Field 3 ranks #71, rated 3.4/5, and costs $208, so there is little reason to consider the other one.
The TOZO PA1 is the lighter pick. A budget water resistant speaker with very long battery life, app EQ and pairing with a second unit. At 1.3 lbs (581 g) it weighs much less than the Sony ULT Field 3 at 2.6 lbs (1.2 kg). The catch: Bass is limited, fading by about 52Hz.
What the Sony ULT Field 3 does well: A rugged waterproof stereo speaker with long battery life, a detailed app EQ, a shoulder strap and a phone charging port. It supports LDAC Bluetooth, which the TOZO PA1 lacks. It plays in stereo from a single unit, unlike the TOZO PA1. The tradeoff: Sounds a bit hollow, a bit boosted in the treble.
Buy the TOZO PA1. It is rated higher for sound quality than the Sony ULT Field 3 and costs less, so only choose the other one for a particular feature it does better.
Looking for alternatives? See the complete Portable Bluetooth rankings.
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Specifications Side By Side
| TOZO PA1 | Sony ULT Field 3 | |
|---|---|---|
| Price | $39.99 | $208.00 |
| Ranked | #60 of 179 in Medium Size Portable Bluetooth Speakers | #71 of 179 in Medium Size Portable Bluetooth Speakers |
| Bass Extension (-10dB) | 52Hz | - |
| Battery Life | 25 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Bluetooth Latency | 220ms | - |
| Maximum SPL | 98dB (measured by Alan Ross Reviews) | - |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| Weight | 1.3 lbs (581 g) | 2.6 lbs (1.2 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.0 | 5.2 |
| Drivers | 67mm fullrange | 1x 20mm tweeter + 1x 86mm x 46mm woofer |
| Dimensions | 8.3” x 3.6” x 2.4” (210 x 91 x 61 mm) | 10.1” x 4.4” x 3.1” (256 x 113 x 79 mm) |
| Frequency Response | 55Hz - 18kHz (Manufacturer specified) | - |
| Amplifier Power | 20W | 27W |
| IP Rating | IPX6 | IP67 |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC, AAC | SBC, AAC, LDAC |
| App | Yes | Yes |
| Aux Input | No | No |
| EQ | Yes | Yes (App + ULT button) |
| TWS | Yes | Yes |
| Power Input | USB-C | USB-C |
| Strap | Yes (lanyard) | Yes (detachable shoulder strap) |
| Built-in Microphone | - | Yes |
| Party Mode | - | Yes (Party Connect up to 100 speakers) |
| Power Bank | - | Yes (USB-C, 5V/1.5A) |
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