Short answer: the Joy&Oluv’Sone sEARius S1. It ranks #1 of 176 medium speakers by sound quality (rated 4.7/5); the Tronsmart Mirtune C3 Plus ranks #83 (rated 3.3/5).
The Joy&Oluv’Sone sEARius S1 is the better-sounding pick. A compact speaker tuned for natural, balanced sound and deep bass for its size, with stereo pairing for two units. The catch: A limited-production model available primarily through direct pre-orders rather than retail distribution.
What the Tronsmart Mirtune C3 Plus does well: An affordable waterproof speaker with a separate tweeter, app EQ, Auracast linking, stereo pairing and USB-C audio input. The catch: In side by side tests by Clinch Audio Bass and Mateusz Cholewa, the Xiaomi Sound Party and Soundcore Boom 3i sounded more refined and fuller, and listeners described the C3 Plus’s treble as dull.
Pre-order: the Joy&Oluv’Sone sEARius S1 is available for pre-order.
Buy the Joy&Oluv’Sone sEARius S1. It is rated higher for sound quality than the Tronsmart Mirtune C3 Plus.
About the ratings: the Joy&Oluv’Sone sEARius S1’s rating is estimated from measured siblings and predecessors rather than its own measurements, with a likely range of 4.5 to 4.9, so this verdict could change once it is measured.
Want more options? Browse the full Portable Bluetooth rankings.
A compact speaker tuned for natural, balanced sound and deep bass for its size, with stereo pairing for two units.
An affordable waterproof speaker with a separate tweeter, app EQ, Auracast linking, stereo pairing and USB-C audio input.
Prices on this page were last checked October 26, 2026 at 11:06 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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Specifications Side By Side
| Joy&Oluv’Sone sEARius S1 | Tronsmart Mirtune C3 Plus | |
|---|---|---|
| Price | €129 (€199 for 2), Preorder | $49.99 |
| Ranked | #1 of 176 in Medium Size Portable Bluetooth Speakers Estimated | #83 of 176 in Medium Size Portable Bluetooth Speakers |
| Bass Extension (-10dB) | 49Hz (measured, Oluv frequency response chart) | - |
| Bluetooth | Yes | Yes |
| Stereo | No | No |
| TWS | Yes | Yes |
| Omnidirectional | No | No |
| Strap | Yes | Yes (lanyard) |
| App | No | Yes (Tronsmart) |
| Power Input | USB-C | USB-C |
| Aux Input | - | No |
| Amplifier Power | - | 50W |
| Battery Life | - | 12 hours at 50% volume (Manufacturer specified) |
| Bluetooth Codecs | - | SBC |
| Bluetooth Version | - | 6.0 |
| Charging Time | - | 4 hours |
| Digital Aux Input | - | Yes (USB-C) |
| Dimensions | - | 8.3”H x 3.1”W x 3.3”D (210 x 80 x 85 mm) |
| Drivers | - | 1x racetrack woofer + 1x tweeter |
| EQ | - | Yes (app) |
| Frequency Response | - | 50Hz - 20kHz (Manufacturer specified) |
| IP Rating | - | IPX7 |
| Party Mode | - | Yes (Auracast) |
| Weight | - | 1.8 lbs (0.81 kg) |
Watch Them Compared
Videos and reviews that test both speakers side by side.
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