Short answer: the Tozo PA1. It ranks #55 of 144 medium speakers by sound quality, rated 3.5/5, at $39.99; the Sony ULT Field 1 ranks #81, rated 3.1/5, and costs $98, which makes this an easy call rather than a real tradeoff.
What the Tozo PA1 does well: Tozo PA1 uses 67mm fullrange. The catch: Bass is limited by its 52Hz specification.
The case for the Sony ULT Field 1: IP67 rated, survives drops and 1m submersion. The tradeoff: Upper midrange peak, rolled off treble.
Buy the Tozo PA1. It is rated higher for sound quality than the Sony ULT Field 1 and costs less, so only choose the other one for a particular feature it does better.
Battery life favors the Tozo PA1: rated for 25 hours against 12 hours for the Sony ULT Field 1.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Tozo PA1 | Sony ULT Field 1 | |
|---|---|---|
| Price | $39.99 | $98.00 |
| Ranked | #55 of 144 in Medium Size Portable Bluetooth Speakers | #81 of 144 in Medium Size Portable Bluetooth Speakers |
| Bass Extension (-10dB) | 52Hz | - |
| Battery Life | 25 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| Bluetooth Latency | 220ms | - |
| Maximum SPL | 98dB (measured by Alan Ross Reviews) | - |
| Stereo | No | No |
| Omnidirectional | No | No |
| Weight | 1.3 lbs (581 g) | 1.4 lbs (650 g) |
| Bluetooth Version | 5.0 | 5.3 |
| Drivers | 67mm fullrange | 83mm x 42mm woofer, 16mm tweeter + passive radiator |
| Dimensions | 8.3” x 3.6” x 2.4” (210 x 91 x 61 mm) | 8.1” x 3” x 3” (206 x 77 x 76 mm) |
| Frequency Response | 55Hz - 18kHz (Manufacturer specified) | - |
| Amplifier Power | 20W | - |
| IP Rating | IPX6 | IP67 |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC, AAC | AAC, SBC |
| App | Yes | Yes |
| Aux Input | No | No |
| EQ | Yes | Yes |
| TWS | Yes | Yes |
| Power Input | USB-C | USB-C |
| Built-in Microphone | - | Yes |
| Party Mode | - | Yes (Party Connect up to 100 speakers) |
| Power Bank | - | No |
| Strap | - | Yes (detachable strap) |
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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
Tozo PA1: $39.99 Amazon eBay
Pros: Tozo PA1 uses 67mm fullrange. Its 581 g, claimed 25 hours (Manufacturer specified) battery life, IPX6 protection, up to 98dB and mono playback make it a practical option for its intended room or portable use. Measured bass extension of 52Hz (-10dB).
Cons: Bass is limited by its 52Hz specification. There is no companion app. No EQ adjustment.
Full Tozo PA1 review and specifications →
| Amplifier Power | 20W |
|---|---|
| App | Yes |
| Aux Input | No |
| Bass Extension (-10dB) | 52Hz |
| Battery Life | 25 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC |
| Bluetooth Latency | 220ms |
| Bluetooth Version | 5.0 |
| Digital Aux Input | No |
| Dimensions | 8.3” x 3.6” x 2.4” (210 x 91 x 61 mm) |
| Drivers | 67mm fullrange |
| EQ | Yes |
| Frequency Response | 55Hz - 18kHz (Manufacturer specified) |
| IP Rating | IPX6 |
| Maximum SPL | 98dB (measured by Alan Ross Reviews) |
| Omnidirectional | No |
| Power Input | USB-C |
| Stereo | No |
| TWS | Yes |
| Weight | 1.3 lbs (581 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: 1 million views! Best Budget Tws? Tozo Pa1 Review and sound test More from alanrossreviews →
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- Jay’s Straight Up Reviews & More: On A Ledge 🪟 Soundcore Motion 300 vs Tozo PA1 ⚒ Battle of the Budget Handheld Bluetooth Speakers More from JaysStraightUpReviews →
- Jay’s Straight Up Reviews & More: Newly Released! Skullcandy Terrain XL 🦨 Quick Overview & Sound Comparison with JBL Flip 6 & Tozo PA1
- Head-to-Head Comparisons
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
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