Short answer: the Sony ULT Field 1, if you are buying new. The Tribit Maxsound Plus ranks higher than it (#22 vs #90 of 157 medium speakers, 4.1/5 vs 3.1/5) but is discontinued, so only consider it used; the Sony ULT Field 1 is still sold new at $138.
The Tribit Maxsound Plus is the better-sounding, longer-running option. Use XBass mode for flattest frequency response and balanced audio reproduction. It is rated for 20 hours of battery against 12 for the Sony ULT Field 1. 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: Slightly less deep bass than modern class leaders.
What the Sony ULT Field 1 does well: IP67 rated, survives drops and 1m submersion. It supports AAC Bluetooth, which the Tribit Maxsound Plus lacks. It has an adjustable EQ, which the Tribit Maxsound Plus lacks. It charges over USB-C rather than Micro USB. The catch: Upper midrange peak, rolled off treble.
Buy the Sony ULT Field 1 new; the Tribit Maxsound Plus is no longer sold new, so it only makes sense as a used find.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Tribit Maxsound Plus | Sony ULT Field 1 | |
|---|---|---|
| Price | $79.99 Discontinued | $138.00 |
| Ranked | #22 of 157 in Medium Size Portable Bluetooth Speakers | #90 of 157 in Medium Size Portable Bluetooth Speakers |
| App | No | Yes |
| Aux Input | Yes | No |
| Bass Extension (-10dB) | 58Hz | - |
| Battery Life | 20 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| Built-in Microphone | No | Yes |
| EQ | No | Yes |
| IP Rating | IPX7 | IP67 |
| Bluetooth Latency | 160ms | - |
| Maximum SPL | 99dB (measured by Alan Ross Reviews) | - |
| Power Bank | No | No |
| Stereo | Yes | No |
| Omnidirectional | No | No |
| TWS | No | Yes |
| Weight | 1.3 lbs (595 g) | 1.4 lbs (650 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 4.2 | 5.3 |
| Drivers | 2x 44mm full-range drivers + 2x passive radiators | 83mm x 42mm woofer, 16mm tweeter + passive radiator |
| Amplifier Power | 24W | - |
| Power Input | Micro USB | USB-C |
| Dimensions | 2.6” x 7.8” x 2.7” (65 x 198 x 68 mm) | 8.1” x 3” x 3” (206 x 77 x 76 mm) |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC | AAC, SBC |
| Strap | No | Yes (detachable strap) |
| Party Mode | - | Yes (Party Connect up to 100 speakers) |
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Prices on this page were last checked October 2, 2026 at 10:18 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
Tribit Maxsound Plus: $79.99 Discontinued eBay
Newer model: the Tribit Xsound Plus 2, ranked lower, rated 3.9/5.
Pros: Use XBass mode for flattest frequency response and balanced audio reproduction. 24W output with dual 44mm drivers and dual passive radiators. Up to 20 hours battery life and IPX7 waterproof casing. Measured bass extension of 58Hz (-10dB).
Cons: Slightly less deep bass than modern class leaders. No true wireless stereo pairing between two units (introduced on the V2). Discontinued; superseded by Maxsound Plus V2 and XSound Plus 2.
Full Tribit Maxsound Plus review and specifications →
| Amplifier Power | 24W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 58Hz |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 160ms |
| Bluetooth Version | 4.2 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 2.6” x 7.8” x 2.7” (65 x 198 x 68 mm) |
| Drivers | 2x 44mm full-range drivers + 2x passive radiators |
| EQ | No |
| IP Rating | IPX7 |
| Maximum SPL | 99dB (measured by Alan Ross Reviews) |
| Omnidirectional | No |
| Power Bank | No |
| Power Input | Micro USB |
| Stereo | Yes |
| Strap | No |
| TWS | No |
| Weight | 1.3 lbs (595 g) |
- Links
- Reviews, Comparisons and Sound Samples
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Sony ULT Field 1: $138.00 Amazon eBay
Older models: the Sony XB23 (ranked higher, rated 3.3/5) and the Sony SRS-XB20 (ranked lower, 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 | Yes |
| 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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