Short answer: the Tronsmart Mirtune C3 Plus. It ranks #84 of 182 medium speakers by sound quality, rated 3.3/5, at $49.99; the Marshall Emberton III ranks #128, rated 2.7/5, and costs $179.99, which makes this an easy call rather than a real tradeoff.
The Tronsmart Mirtune C3 Plus is the better-sounding option. 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.
The Marshall Emberton III is the longer-running pick. A tough waterproof speaker with Marshall styling and a very long battery, plus quick charging. It is rated for 32 hours of battery against 12 for the Tronsmart Mirtune C3 Plus. It plays in stereo from a single unit, unlike the Tronsmart Mirtune C3 Plus. 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.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Prices on this page were last checked November 14, 2026 at 6:17 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
| Tronsmart Mirtune C3 Plus | Marshall Emberton III | |
|---|---|---|
| Price | $49.99 | $179.99 |
| Ranked | #84 of 182 in Medium Size Portable Bluetooth Speakers | #128 of 182 in Medium Size Portable Bluetooth Speakers |
| Aux Input | No | No |
| 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 |
Where the Ratings Come From
- Tronsmart Mirtune C3 Plus: reviews by Oluv, Mateusz Cholewa and Techder Audios.
- Marshall Emberton III: reviews by Danny Pops, CEONTHEMAKING and Passione Speaker.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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