Short answer: the Ultimate Ears Megaboom 4 for better sound quality, the Zealot S61 for the lower price. The Ultimate Ears Megaboom 4 ranks #132 of 136 medium speakers at $200. The Zealot S61 ranks #134 at $20, $180 cheaper.
What the Ultimate Ears Megaboom 4 offers: IP67 rated, floats, and finally uses USB-C charging. Watch for: A lot of distortion at higher volumes.
On the Zealot S61 side: 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. Set against that: Sounds like a soup can, no bass at all.
Buy the Ultimate Ears Megaboom 4 if sound quality matters more than the price. Buy the Zealot S61 if the price matters more than sound quality.
If sound quality matters at all to you, skip both of these and look higher up the 136 medium speakers instead.
If battery life is a priority, the Zealot S61 is rated for 40 hours versus 20 hours for the Ultimate Ears Megaboom 4.
Specifications Side By Side
| Ultimate Ears Megaboom 4 | Zealot S61 | |
|---|---|---|
| Price | $200 | $20 |
| Ranked | #132 of 136 in Medium Size Portable Bluetooth Speakers | #134 of 136 in Medium Size Portable Bluetooth Speakers |
| App | Yes | - |
| Battery Life | 20 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| IP Rating | IP67 | IPX7 |
| Party Mode | Yes (PartyUp up to 50 speakers) | - |
| Stereo | No | - |
| Omnidirectional | Yes | No |
| Bluetooth Version | 5.1 | 5.2 |
| Dimensions | 3.4" x 3.4" x 8.9" (87 x 87 x 225 mm) | 4.1" x 4.1" x 6.7" (103 x 103 x 170 mm) |
| Drivers | 2x 50x50mm full-range + 2x 55x86mm passive radiators | 66mm full-range |
| TWS | Yes | Yes |
| EQ | Yes (via app) | - |
| Power Input | USB-C | USB-C |
| Built in Microphone | No | Yes |
| Weight | 2.4 lbs / 1.1 kg | 1.5 lbs / 665 g |
| Max Volume | 91dB | - |
| Digital Aux Input | No | No |
| Aux Input | - | Yes |
| Output Power | - | 20W |
| Power Bank | - | No |
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The Two Speakers In Full
Ultimate Ears Megaboom 4: $200 Amazon
Pros: IP67 rated, floats, and finally uses USB-C charging. 20 hour battery life. ‘PartyUp’ feature syncs multiple UE speakers together.
Cons: A lot of distortion at higher volumes. Rolled off treble. Not very loud. They really screwed this up
Full Ultimate Ears Megaboom 4 review and specifications →
| App | Yes |
|---|---|
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth Version | 5.1 |
| Built in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 3.4" x 3.4" x 8.9" (87 x 87 x 225 mm) |
| Drivers | 2x 50x50mm full-range + 2x 55x86mm passive radiators |
| EQ | Yes (via app) |
| IP Rating | IP67 |
| Max Volume | 91dB |
| Omnidirectional | Yes |
| Party Mode | Yes (PartyUp up to 50 speakers) |
| Power Input | USB-C |
| Stereo | No |
| TWS | Yes |
| Weight | 2.4 lbs / 1.1 kg |
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- Links
- Reviews, Comparisons and Sound Samples
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- Ultimate Ears Megaboom 4 vs Ultimate Ears Wonderboom 4
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Zealot S61: $20 Amazon Aliexpress
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.
Full Zealot S61 review and specifications →
| Aux Input | Yes |
|---|---|
| Battery Life | 40 hours (Manufacturer specified) |
| 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 |
| IP Rating | IPX7 |
| Omnidirectional | No |
| Output Power | 20W |
| Power Bank | No |
| Power Input | USB-C |
| TWS | Yes |
| Weight | 1.5 lbs / 665 g |
As an eBay Partner, we may be compensated if you make a purchase.
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons