Short answer: the Tronsmart Mirtune C3 Plus. It ranks #75 of 150 medium speakers by sound quality, rated 3.3/5, at $49.99; the Marshall Emberton III ranks #110, rated 2.7/5, and costs $160.99, which makes this an easy call rather than a real tradeoff.
Why pick the Tronsmart Mirtune C3 Plus: A racetrack woofer and a tweeter rated for 50W, with IPX7 waterproofing, Bluetooth 6.0, Auracast multi-speaker sync, stereo pairing, USB-C audio input, app EQ and a detachable lanyard, at 0.81 kg. The tradeoff: 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.
The case for the Marshall Emberton III: 30 hour battery life: among the best in its class; a 20 min quick-charge gives 4 hours. Watch for: Strange unnatural echo-like sound coloration, bass not as deep as competitors.
Buy the Tronsmart Mirtune C3 Plus. It is rated higher for sound quality than the Marshall Emberton III and costs less, which makes it the one to get unless you need something the other one does better.
There is a real battery-life gap here: the Marshall Emberton III is rated for 32 hours, the Tronsmart Mirtune C3 Plus only 12 hours.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Tronsmart Mirtune C3 Plus | Marshall Emberton III | |
|---|---|---|
| Price | $49.99 | $160.99 |
| Ranked | #75 of 150 in Medium Size Portable Bluetooth Speakers | #110 of 150 in Medium Size Portable Bluetooth Speakers |
| Amplifier Power | 50W | 20W |
| App | Yes (Tronsmart) | Yes |
| Battery Life | 12 hours at 50% volume (Manufacturer specified) | 32 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Bluetooth Version | 6.0 | 5.3 |
| Charging Time | 4 hours | - |
| Digital Aux Input | Yes (USB-C) | No |
| Dimensions | 8.3”H x 3.1”W x 3.3”D (210 x 80 x 85 mm) | 6.3” x 2.7” x 3” (160 x 68 x 76 mm) |
| Drivers | 1x racetrack woofer + 1x tweeter | 2x 2” full-range cone drivers + 2x 2” passive radiators |
| EQ | Yes (app) | Yes (3 presets via app) |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) | - |
| IP Rating | IPX7 | IP67 |
| Omnidirectional | No | Yes |
| Party Mode | Yes (Auracast) | Yes (Marshall Stack) |
| Power Input | USB-C | USB-C |
| Stereo | No | Yes |
| Strap | Yes (lanyard) | No |
| TWS | Yes | No |
| Weight | 1.8 lbs (0.81 kg) | 1.5 lbs (673 g) |
| Bass Extension (-10dB) | - | 62Hz |
| Built-in Microphone | - | Yes |
| Power Bank | - | No |
| Aux Input | - | No |
Related Speaker Comparisons
More top alternatives to Tronsmart Mirtune C3 Plus:
- Soundcore Motion 300 vs Tronsmart Mirtune C3 Plus
- JBL Charge 6 vs Tronsmart Mirtune C3 Plus
- JBL Flip 6 vs Tronsmart Mirtune C3 Plus
- JBL Flip 7 vs Tronsmart Mirtune C3 Plus
- Xiaomi Sound Party vs Tronsmart Mirtune C3 Plus
Prices on this page were last checked September 30, 2026 at 2:57 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
Tronsmart Mirtune C3 Plus: $49.99 Tronsmart Best Buy eBay
Pros: A racetrack woofer and a tweeter rated for 50W, with IPX7 waterproofing, Bluetooth 6.0, Auracast multi-speaker sync, stereo pairing, USB-C audio input, app EQ and a detachable lanyard, at 0.81 kg.
Cons: 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. Tronsmart rates the battery at only 12 hours at half volume. It is a mono unit with no aux input.
Full Tronsmart Mirtune C3 Plus review and specifications →
| Amplifier Power | 50W |
|---|---|
| App | Yes (Tronsmart) |
| Battery Life | 12 hours at 50% volume (Manufacturer specified) |
| Bluetooth | Yes |
| 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 |
| Omnidirectional | No |
| Party Mode | Yes (Auracast) |
| Power Input | USB-C |
| Stereo | No |
| Strap | Yes (lanyard) |
| TWS | Yes |
| Weight | 1.8 lbs (0.81 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Clinch Audio Bass: Mirtune C3 Plus 50w VS Xioami Sound Party 50w
- Clinch Audio Bass: Mirtune C3 Plus 50w VS SoundCore Boom 3i 50w
- Techder Audios: Xiaomi Sound Party vs Tronsmart Mirtune C3 Plus - Real Sound & Bass Test! More from techderaudios →
- Mateusz Cholewa: Soundcore Boom 3i vs Tronsmart Mirtune C3 Plus More from Mateusz Cholewa →
- Importados Neto Rocha: Vale a pena pagar o dobro? Tronsmart C3 Plus vs JBL Flip 7
- GiT: Tronsmart Mirtune C3 vs C3+ blind test
- Head-to-Head Comparisons
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Marshall Emberton III: $160.99 Amazon eBay
Older model: the Marshall Emberton II (ranked lower, rated 2.7/5).
Pros: 30 hour battery life: among the best in its class; a 20 min quick-charge gives 4 hours. IP67 rated, durable rubbery build using 50% recycled plastic. Measured bass extension of 62Hz (-10dB).
Cons: Strange unnatural echo-like sound coloration, bass not as deep as competitors. Not technically a 360 speaker, only front and rear. Not very loud. Not really any different from the Emberton II except having the treble turned down a little bit.
Full Marshall Emberton III review and specifications →
| Amplifier Power | 20W |
|---|---|
| App | Yes |
| Aux Input | No |
| Bass Extension (-10dB) | 62Hz |
| Battery Life | 32 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 6.3” x 2.7” x 3” (160 x 68 x 76 mm) |
| Drivers | 2x 2” full-range cone drivers + 2x 2” passive radiators |
| EQ | Yes (3 presets via app) |
| IP Rating | IP67 |
| Omnidirectional | Yes |
| Party Mode | Yes (Marshall Stack) |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | No |
| TWS | No |
| Weight | 1.5 lbs (673 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Marshall Emberton III vs Bose SoundLink Color II
- Marshall Emberton III vs Marshall Emberton II
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- See all 134 comparisons