Short answer: the Sony ULT Tower 5. It ranks #5 of 51 party speakers by sound quality (rated 4.5/5) at $348 and is still sold new; the Samsung MX-ST50B ranks #25 (rated 3.6/5) and is discontinued, so it is only an option used.
The Sony ULT Tower 5 is the better-sounding choice. A powerful party tower with deep bass, a removable long battery, and mic and XLR inputs for karaoke or DJ use. It supports LDAC Bluetooth, which the Samsung MX-ST50B lacks. The catch: It has a shorter 20-hour battery claim than the Sony ULT Tower 7’s 30 hours, no wheels, and only IPX4 splash resistance.
The case for the Samsung MX-ST50B: A splash resistant party tower with two woofers, karaoke input, app EQ, and linking for up to ten speakers. Watch for: Output drops sharply to 90W on battery, so it needs mains power for its full impact.
Buy the Sony ULT Tower 5. It is rated higher for sound quality and still sold new, while the Samsung MX-ST50B is discontinued.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
A powerful party tower with deep bass, a removable long battery, and mic and XLR inputs for karaoke or DJ use.
A splash resistant party tower with two woofers, karaoke input, app EQ, and linking for up to ten speakers.
Prices on this page were last checked October 31, 2026 at 7:11 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
| Sony ULT Tower 5 | Samsung MX-ST50B | |
|---|---|---|
| Price | $348.00 | $300 Discontinued |
| Ranked | #5 of 51 in Party Size Portable Bluetooth Speakers | #25 of 51 in Party Size Portable Bluetooth Speakers |
| App | Yes (Sony Sound Connect) | Yes |
| Aux Input | RCA input | Yes |
| Battery Life | 20 hours (manufacturer specified) | 18 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC | aptX, AAC, SBC |
| Bluetooth Version | 5.3 | 5.0 |
| Built-in Microphone | No | - |
| Digital Aux Input | Yes (USB-C) | No |
| Dimensions | 14.1” x 21.1” x 11.1” (358 x 536 x 282 mm) | 13” x 26.2” x 11.9” (329 x 665 x 301 mm) |
| Drivers | 3 drivers: 1x 9” woofer, 2x 2.4” tweeter | 2x 6.5” woofers, 2x 2.5” tweeters |
| EQ | Yes (10 band; ULT1 / ULT2 / Flat) | Yes |
| Guitar Input | No | - |
| IP Rating | IPX4 | IPX5 |
| Microphone Input | Yes | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No | No |
| Amplifier Power | 300W | 240W (AC) / 90W (battery) |
| Party Mode | Yes (Auracast) | Yes (Samsung Group Play up to 10 speakers) |
| Power Bank | Yes (USB-C charging) | Yes |
| Power Input | AC power cord | AC Power cord |
| Removable Battery | Yes | - |
| Stereo | Yes | Yes |
| TWS | Yes (Stereo Pair) | No |
| USB Playback | Yes (USB-A and USB-C) | Yes |
| Weight | 28 lbs (12.7 kg) | 26.2 lbs (11.9 kg) |
| Wi-Fi | No | - |
| Lights | Yes | Yes |
| Strap | No | No |
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