Short answer: the Soundcore Motion 300. It ranks #3 of 182 medium speakers by sound quality, rated 4.5/5, at $79.99. The Tronsmart Mirtune C3 Plus ranks #84, rated 3.3/5, at $49.99, $30 cheaper, which does not close the gap in sound quality.
The Soundcore Motion 300 is the better-sounding pick. A compact stereo speaker with deep bass for its size, hi res Bluetooth and a custom EQ for each position, standing or lying down. It supports LDAC Bluetooth, which the Tronsmart Mirtune C3 Plus lacks. It plays in stereo from a single unit, unlike the Tronsmart Mirtune C3 Plus. Watch for: Without the above EQ or turning the top 2 treble EQ bars to max, this speaker is very rolled off in the treble and will rank around #50 in the rankings.
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 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.
Buy the Soundcore Motion 300. It is rated higher for sound quality, and saving $30 with the Tronsmart Mirtune C3 Plus does not make up for the sound-quality gap.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
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
| Soundcore Motion 300 | Tronsmart Mirtune C3 Plus | |
|---|---|---|
| Price | $79.99 | $49.99 |
| Ranked | #3 of 182 in Medium Size Portable Bluetooth Speakers | #84 of 182 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes (Tronsmart) |
| Aux Input | No | No |
| Bass Extension (-10dB) | 50Hz | - |
| Battery Life | 13 hours (Manufacturer specified) | 12 hours at 50% volume (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | AAC, LDAC, SBC | SBC |
| Built-in Microphone | Yes | - |
| EQ | Yes (9 band with adjustable frequency) | Yes (app) |
| IP Rating | IPX7 | IPX7 |
| Bluetooth Latency | 216ms ldac, 200ms aac, 116ms sbc | - |
| Maximum SPL | 101dB (measured by Alan Ross Reviews) | - |
| Power Bank | No | - |
| Stereo | Yes | No |
| Omnidirectional | Pointing up | No |
| TWS | Yes | Yes |
| Weight | 1.7 lbs (772 g) | 1.8 lbs (0.81 kg) |
| Bluetooth Version | 5.3 | 6.0 |
| Dimensions | 7.9” x 3.6” x 2” (200 x 92 x 50 mm) | 8.3”H x 3.1”W x 3.3”D (210 x 80 x 85 mm) |
| Drivers | 2x 50.8mm (2”) full-range drivers + 2x passive radiators | 1x racetrack woofer + 1x tweeter |
| Frequency Response | 65Hz - 40kHz (Manufacturer specified) | 50Hz - 20kHz (Manufacturer specified) |
| Power Input | USB-C | USB-C |
| Amplifier Power | 30W | 50W |
| Party Mode | Yes (PartyCast up to 100 speakers) | Yes (Auracast) |
| Digital Aux Input | No | Yes (USB-C) |
| Charging Time | - | 4 hours |
| Strap | - | Yes (lanyard) |
Where the Ratings Come From
- Soundcore Motion 300: reviews by Joy & Oluv’Sone, Oluv and Alan Ross.
- Tronsmart Mirtune C3 Plus: reviews by Oluv, Mateusz Cholewa and Techder Audios.
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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