Short answer: the Sony ULT Field 1. It ranks #100 of 175 medium speakers by sound quality (rated 3.1/5) at $138 and is still sold new; the Zealot S61 ranks #172 (rated 2.0/5) and is discontinued, so it is only an option used.
The Sony ULT Field 1 is the better-sounding choice. IP67 rated, survives drops and 1m submersion. It has an adjustable EQ, which the Zealot S61 lacks. The tradeoff: Upper midrange peak, rolled off treble.
The Zealot S61 is the longer-running choice. 20W output, IPX7 waterproof, exceptional 40-hour battery life, Bluetooth 5.2, TWS stereo pairing, compact 1.5 lbs (665 g) design, single full-range driver, built-in microphone, AUX input, USB-C charging. It is rated for 40 hours of battery against 12 for the Sony ULT Field 1. It keeps a wired aux input, which the Sony ULT Field 1 lacks. The tradeoff: Sounds like a soup can, no bass at all.
Buy the Sony ULT Field 1. It is rated higher for sound quality, and the Zealot S61 is discontinued, so it is only available used.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Sony ULT Field 1 | Zealot S61 | |
|---|---|---|
| Price | $138.00 | $20 Discontinued |
| Ranked | #100 of 175 in Medium Size Portable Bluetooth Speakers | #172 of 175 in Medium Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | No | Yes |
| Battery Life | 12 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| Built-in Microphone | Yes | Yes |
| EQ | Yes | No |
| IP Rating | IP67 | IPX7 |
| Party Mode | Yes (Party Connect up to 100 speakers) | - |
| Power Bank | No | No |
| Power Input | USB-C | USB-C |
| Stereo | No | No (single full-range driver) |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 1.4 lbs (650 g) | 1.5 lbs (665 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | AAC, SBC | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.3 | 5.2 |
| Dimensions | 8.1” x 3” x 3” (206 x 77 x 76 mm) | 4.1” x 4.1” x 6.7” (103 x 103 x 170 mm) |
| Drivers | 83mm x 42mm woofer, 16mm tweeter + passive radiator | 66mm full-range |
| Digital Aux Input | No | No |
| Strap | Yes (detachable strap) | - |
| Amplifier Power | - | 20W |
Related Speaker Comparisons
How Sony ULT Field 1 compares with other leading options:
- Sony ULT Field 1 vs EarFun Uboom L
- Sony ULT Field 1 vs Soundcore Motion 300
- Soundcore Motion+ vs Sony ULT Field 1
- Soundcore Boost “upgraded” 2021 vs Sony ULT Field 1
- Sony ULT Field 1 vs Minirig 4
Prices on this page were last checked October 12, 2026 at 4:13 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
Sony ULT Field 1: $138.00 Amazon $138.00 eBay
Older models: the Sony XB23 (ranked higher, rated 3.3/5), the Sony SRS-XB20 (ranked lower, rated 2.8/5), the Sony SRS-XB21 (ranked lower, rated 2.7/5) and the Sony SRS-XE200 (ranked lower, rated 2.5/5). See every Sony XB and ULT generation.
Same family: the Sony ULT Field 7 (larger model, rated 3.2/5), the Sony ULT Tower 10 (larger model, rated 3.9/5), the Sony ULT Field 3 (larger model, ranked higher, rated 3.4/5), the Sony ULT Field 5 (larger model, rated 3.5/5), the Sony ULT Tower 5 (larger model, rated 4.5/5), the Sony ULT Tower 7 (larger model, rated 4.7/5), the Sony ULT Tower 9 (larger model, rated 4.2/5) and the Sony ULT Tower Max (larger model, rated 4.8/5).
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 →
| Released | Apr 2024 (2 years ago) |
|---|---|
| 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
- Techder Audios: Sony ULT Field 1 VS Teufel Rockster Go 2 “CLOSE CALL?” More from techderaudios →
- Jay’s Straight Up Reviews & More: Ultimate Ears MegaBoom 4 vs Sony ULT Field 1 😧 $200 vs $128 Cylinder Bluetooth Speaker Matchup More from JaysStraightUpReviews →
- Storytripper HD: Huawei Soundjoy 2 vs Edifier ES60 vs Sony ULT Field 1 More from storytripperhd →
- New Stuff TV 2: Sony ULT Field 1 vs JBL Flip 6, JBL Charge 5 & Soundcore Motion 300 More from NewStuffTV1 →
- Head-to-Head Comparisons
- Sony ULT Field 1 vs JBL Grip
- Sony ULT Field 1 vs Treblab HD77
- Sony ULT Field 1 vs Tribit Xsound Go
- Sony ULT Field 1 vs Tronsmart Mirtune S100
- Sony ULT Field 1 vs KEF Muo gen2
- Sony ULT Field 1 vs Tronsmart Mirtune C3
- Sony ULT Field 1 vs Tribit Xsound Surf
- Sony ULT Field 1 vs Sonos Roam
- See all 140 comparisons
Zealot S61: $20 Discontinued eBay
Pros: 20W output, IPX7 waterproof, exceptional 40-hour battery life, Bluetooth 5.2, TWS stereo pairing, compact 665g design, single full-range driver, built-in microphone, AUX input, USB-C charging
Cons: Sounds like a soup can, no bass at all. Weird frequency response all over. Discontinued and no longer sold new.
Full Zealot S61 review and specifications →
| Released | Feb 2022 (4 years ago) |
|---|---|
| Amplifier Power | 20W |
| App | No |
| Aux Input | Yes |
| Battery Life | 40 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 4.1” x 4.1” x 6.7” (103 x 103 x 170 mm) |
| Drivers | 66mm full-range |
| EQ | No |
| IP Rating | IPX7 |
| Omnidirectional | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No (single full-range driver) |
| TWS | Yes |
| Weight | 1.5 lbs (665 g) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons