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 3 ranks #61, rated 3.4/5, and costs $138, so there is little reason to consider the other one.
Why pick the Tozo PA1: Tozo PA1 uses 67mm fullrange. The tradeoff: Bass is limited by its 52Hz specification.
What the Sony ULT Field 3 does well: IP67 rated, dustproof and water resistant. The catch: 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.
Specifications Side By Side
| Tozo PA1 | Sony ULT Field 3 | |
|---|---|---|
| Price | $39.99 | $138.00 |
| Ranked | #55 of 144 in Medium Size Portable Bluetooth Speakers | #61 of 144 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 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 |
| Built-in Microphone | - | Yes |
| Party Mode | - | Yes (Party Connect up to 100 speakers) |
| Power Bank | - | Yes (USB-C, 5V/1.5A) |
| Strap | - | Yes (detachable shoulder strap) |
Related Speaker Comparisons
How Tozo PA1 compares with other leading options:
- Earfun Uboom L vs Tozo PA1
- Soundcore Motion 300 vs Tozo PA1
- JBL Charge 6 vs Tozo PA1
- JBL Flip 7 vs Tozo PA1
- Bogasing G4 vs Tozo PA1
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.
As an eBay Partner, we may be compensated if you make a purchase.
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 →
- Alan Ross Reviews: Tribit Stormbox Flow has deeper bass than the Bose Flex but………..
- 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 3: $138.00 Amazon eBay
Older models: the Sony XB33 (rated 3.4/5), the Sony SRS-XE300 (rated 2.8/5) and the Sony SRS-XB30 (rated 2.6/5).
Pros: IP67 rated, dustproof and water resistant. 24 hour battery life. App with 10-band EQ. Party Connect with up to 100 speakers. USB-C in/out for charging your phone.
Cons: Sounds a bit hollow, a bit boosted in the treble. Custom EQ and the ULT bass-boost button can’t be used together - turning on ULT disables the EQ. Bass is very weak with ULT off. Lost to the JBL Charge 6 in a side-by-side comparison despite being the larger speaker.
Full Sony ULT Field 3 review and specifications →
| Amplifier Power | 27W |
|---|---|
| App | Yes |
| Aux Input | No |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 10.1” x 4.4” x 3.1” (256 x 113 x 79 mm) |
| Drivers | 1x 20mm tweeter + 1x 86mm x 46mm woofer |
| EQ | Yes (App + ULT button) |
| IP Rating | IP67 |
| Omnidirectional | No |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-C, 5V/1.5A) |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | Yes (detachable shoulder strap) |
| TWS | Yes |
| Weight | 2.6 lbs (1.2 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Sony ULT Field 3 vs Bose Soundlink Mini
- Sony ULT Field 3 vs Xiaomi Mi Portable
- Sony ULT Field 3 vs Sony XB33
- Sony ULT Field 3 vs Bose Soundlink Mini 2
- Sony ULT Field 3 vs Soundcore 3/Soundcore Select 2
- Sony ULT Field 3 vs Turtlebox Ranger
- Sony ULT Field 3 vs Beats Pill 2024
- Sony ULT Field 3 vs JBL Flip 5
- See all 118 comparisons