Short answer: the Tronsmart Mirtune S100. It ranks #97 of 179 medium speakers by sound quality, rated 3.1/5, at $79.99; the Marshall Emberton III ranks #126, rated 2.7/5, and costs $179.99, which makes this an easy call rather than a real tradeoff.
The Tronsmart Mirtune S100 is the better-sounding choice. A waterproof speaker with long battery life for outdoor and casual listening. It keeps a wired aux input, which the Marshall Emberton III lacks.
The Marshall Emberton III is the longer-running, lighter choice. A tough waterproof speaker with Marshall styling and a very long battery, plus quick charging. It is rated for 32 hours of battery against 20 for the Tronsmart Mirtune S100. At 1.5 lbs (673 g) it weighs much less than the Tronsmart Mirtune S100 at 3 lbs (1.36 kg). Watch for: Strange unnatural echo-like sound coloration, bass not as deep as competitors.
Buy the Tronsmart Mirtune S100. 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.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Prices on this page were last checked November 7, 2026 at 7:34 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 S100 | Marshall Emberton III | |
|---|---|---|
| Price | $79.99 | $179.99 |
| Ranked | #97 of 179 in Medium Size Portable Bluetooth Speakers | #126 of 179 in Medium Size Portable Bluetooth Speakers |
| Bass Extension (-10dB) | ~64Hz | 62Hz |
| Battery Life | 20 hours (Manufacturer specified) | 32 hours (Manufacturer specified) |
| Built-in Microphone | Yes | Yes |
| IP Rating | IPX7 | IP67 |
| Stereo | Partially | Yes |
| Omnidirectional | No | Yes |
| Weight | 3 lbs (1.36 kg) | 1.5 lbs (673 g) |
| Wi-Fi | No | - |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | 5.3 |
| Dimensions | 9.1” x 3.5” x 3.9” (231 x 88 x 100 mm) | 6.3” x 2.7” x 3” (160 x 68 x 76 mm) |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 50W | 20W |
| Drivers | 20W drivers | 2x 2” full-range cone drivers + 2x 2” passive radiators |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC | SBC |
| App | Yes | Yes |
| Aux Input | Yes | No |
| EQ | Yes | Yes (3 presets via app) |
| TWS | Yes | No |
| Power Input | USB-C | USB-C |
| Party Mode | - | Yes (Marshall Stack) |
| Power Bank | - | No |
| Strap | - | No |
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