Short answer: both are discontinued, so this only matters if you are buying used. Used, the Sony XB33 is the better pick: it ranks #77 of 175 medium speakers by sound quality (rated 3.4/5), against #155 (rated 2.3/5) for the Harman Kardon Esquire 2. If you want one new, the Sony ULT Field 3 replaces the Sony XB33 and is rated 3.4/5 at $208.
The Sony XB33 is the better-sounding, longer-running option. IP67 rated and lightweight (2.4 lb). It is rated for 24 hours of battery against 8 for the Harman Kardon Esquire 2. It is rated IP67 against IPX4 for the Harman Kardon Esquire 2. It supports LDAC Bluetooth, which the Harman Kardon Esquire 2 lacks. Watch for: Not very loud.
The Harman Kardon Esquire 2 is the lighter pick. Doubles as a conferencing speakerphone with a 4-mic array and noise/echo cancellation. At 0.8 lbs (350 g) it weighs much less than the Sony XB33 at 2.4 lbs (1.1 kg). It keeps a wired aux input, which the Sony XB33 lacks. The catch: Bass is weak, vocal and instrument separation is underwhelming and sounds tinny at high volume.
Buy the Sony XB33 only if you find one used in good condition; both are discontinued, and it is the better rated of the two. For a new speaker, buy the Sony ULT Field 3, which replaces the Sony XB33.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Sony XB33 | Harman Kardon Esquire 2 | |
|---|---|---|
| Price | $110 Discontinued | $200 Discontinued |
| Ranked | #77 of 175 in Medium Size Portable Bluetooth Speakers | #155 of 175 in Medium Size Portable Bluetooth Speakers |
| App | Yes (Sony Music Connect App) | No |
| Aux Input | No | Yes |
| Bass Extension (-10dB) | 50Hz | - |
| Battery Life | 24 hours (Manufacturer specified) | 8 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC |
| Bluetooth Latency | 110ms | - |
| EQ | Yes (3 band) | No |
| IP Rating | IP67 | IPX4 |
| Maximum SPL | 97dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (Party Connect up to 100 speakers) | - |
| Power Bank | Yes (USB-A) | Yes (USB-A) |
| Stereo | Yes | No |
| Omnidirectional | No | No |
| Weight | 2.4 lbs (1.1 kg) | 0.8 lbs (0.35 kg) |
| Bluetooth Version | 5.0 | 4.1 |
| Dimensions | 9.7” x 3.8” x 4.2” (246 x 97 x 106 mm) | 7.5” x 5.1” x 1.3” (190 x 130 x 34 mm) |
| Amplifier Power | 16W RMS | 16W |
| Drivers | 2x 48x70mm X-Balanced racetrack drivers + 2x passive radiators | 4x 1.25” (32mm) full-range drivers |
| Digital Aux Input | No | No |
| Lights | Yes | - |
| Power Input | USB-C | Micro USB |
| TWS | Yes | No |
| Built-in Microphone | - | Yes |
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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.
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The Two Speakers In Full
Sony XB33: $110 Discontinued eBay
Newer model: the Sony ULT Field 3, ranked higher, rated 3.4/5, released Apr 2025.
Older models: the Sony SRS-XB31 (ranked lower, rated 2.8/5) and the Sony SRS-XB30 (ranked lower, rated 2.6/5). See every Sony XB and ULT generation.
Pros: IP67 rated and lightweight (2.4 lb). App-controlled color LED lighting, Party Connect links up to 100 speakers. ~19 hour real-world battery without lights. Measured bass extension of 50Hz (-10dB).
Cons: Not very loud. Upper bass peaks, midrange dip, upper midrange peaks, not very neutral. Speaker will not remain at max volume and will turn itself down automatically. Discontinued.
Full Sony XB33 review and specifications →
| Released | May 2020 (6 years ago) |
|---|---|
| Amplifier Power | 16W RMS |
| App | Yes (Sony Music Connect App) |
| Aux Input | No |
| Bass Extension (-10dB) | 50Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Latency | 110ms |
| Bluetooth Version | 5.0 |
| Digital Aux Input | No |
| Dimensions | 9.7” x 3.8” x 4.2” (246 x 97 x 106 mm) |
| Drivers | 2x 48x70mm X-Balanced racetrack drivers + 2x passive radiators |
| EQ | Yes (3 band) |
| IP Rating | IP67 |
| Lights | Yes |
| Maximum SPL | 97dB (measured by Alan Ross Reviews) |
| Omnidirectional | No |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 2.4 lbs (1.1 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: Sony XB33 vs XB32 vs JBL Charge 4 best £120 bluetooth speaker? More from alanrossreviews →
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- Alan Ross Reviews: JBL Charge 5 vs Motion Plus and Sony XB33 - ultimate travel speaker 2021 🤗
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- Alan Ross Reviews: Tribit Xsound Mega vs the world! (JBL Charge 5, Bose Flex, Sony XB33, LG PL7) 👍
- GYMCADDY: Sony XE300 Review And Compared to Sony XB33 - A Muffled Mess More from GYMCADDY →
- Head-to-Head Comparisons
Harman Kardon Esquire 2: $200 Discontinued eBay
Pros: Doubles as a conferencing speakerphone with a 4-mic array and noise/echo cancellation. Flat, compact design packs easily. USB charge-out for topping off a phone.
Cons: Bass is weak, vocal and instrument separation is underwhelming and sounds tinny at high volume. Discontinued.
Full Harman Kardon Esquire 2 review and specifications →
| Released | 2015 (11 years ago) |
|---|---|
| Amplifier Power | 16W |
| App | No |
| Aux Input | Yes |
| Battery Life | 8 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.1 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 7.5” x 5.1” x 1.3” (190 x 130 x 34 mm) |
| Drivers | 4x 1.25” (32mm) full-range drivers |
| EQ | No |
| IP Rating | IPX4 |
| Omnidirectional | No |
| Power Bank | Yes (USB-A) |
| Power Input | Micro USB |
| Stereo | No |
| TWS | No |
| Weight | 0.8 lbs (0.35 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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- Harman Kardon Esquire 2 vs Sony SRS-XE200
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