Short answer: both are discontinued, so this only matters if you are buying used. Used, the JBL Partybox 300 is the better pick: it ranks #10 of 43 party speakers by sound quality (rated 4.3/5), against #24 (rated 3.6/5) for the Samsung MX-ST50B. If you want one new, the JBL Partybox Club 120 ranks #6 at $349.95.
On the Samsung MX-ST50B side: Sounds reasonably balanced. Set against that: Not as deep bass as the Partybox 110 or other higher ranked speakers.
Buy the JBL Partybox 300 only if you find one used in good condition; both are discontinued, and it is the better rated of the two. For a new speaker, start with the JBL Partybox Club 120 instead.
If water resistance matters to you, the Samsung MX-ST50B at IPX5 (water jets) holds up far better than the JBL Partybox 300 at no water resistance.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| JBL Partybox 300 | Samsung MX-ST50B | |
|---|---|---|
| Price | $300 Discontinued | $300 Discontinued |
| Ranked | #10 of 43 in Party Size Portable Bluetooth Speakers | #24 of 43 in Party Size Portable Bluetooth Speakers |
| App | No | Yes |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 40Hz | - |
| Battery Life | 18 hours (Manufacturer specified) | 18 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | aptX, AAC, SBC |
| Bluetooth Version | 4.2 | 5.0 |
| Dimensions | 27” x 13” x 12.7” (685.8 x 330.2 x 322.6 mm) | 13” x 26.2” x 11.9” (329 x 665 x 301 mm) |
| EQ | No | Yes |
| Frequency Response | 45Hz - 20kHz (Manufacturer specified) | - |
| Guitar Input | Yes | - |
| IP Rating | None | IPX5 |
| Microphone Input | Yes (Karaoke mode with echo effect) | Yes (Karaoke mode with echo effect) |
| Party Mode | No | Yes (Samsung Group Play up to 10 speakers) |
| Power Bank | Yes (USB-A) | Yes |
| Power Input | AC Power cord | AC Power cord |
| Stereo | Yes (lying down) | Yes |
| Omnidirectional | No | No |
| TWS | Yes | No |
| USB Playback | Yes | Yes |
| Weight | 35.3 lbs (16 kg) | 26.2 lbs (11.9 kg) |
| Amplifier Power | 120W | 240W (AC) / 90W (battery) |
| Drivers | 2x 6.5” (165mm) woofers + 3x 2.25” (57mm) tweeters | 2x 6.5” woofers, 2x 2.5” tweeters |
| Digital Aux Input | No | No |
| Lights | Yes | Yes |
| Strap | No | No |
Related Speaker Comparisons
More worthwhile head-to-heads for JBL Partybox 300:
- JBL Partybox 330 vs JBL Partybox 300
- JBL Partybox Stage 320 vs JBL Partybox 300
- JBL Partybox 310 vs JBL Partybox 300
- JBL Partybox 300 vs JBL Partybox Club 120
- JBL Partybox 130 vs JBL Partybox 300
Prices on this page were last checked October 2, 2026 at 10:18 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
JBL Partybox 300: $300 Discontinued eBay
Newer model: the JBL Partybox 330, ranked higher, rated 4.6/5.
Pros: Exceptional sound quality with crisp, crystal clear highs and midranges, hard punchy bass without muddiness. 2x 6.5” woofers + 3x 2.25” tweeters, bass boost function, 45Hz-20kHz frequency range. 18-hour battery with 10400mAh capacity. Multiple inputs (RCA, USB, 3.5mm aux, mic, guitar). LED light modes (meter/pulse/party). True Wireless Stereo pairing up to 2 units. Measured bass extension of 40Hz (-10dB).
Cons: Hard to carry, too tall, drags on the ground. Max spl and bass extension are only as good as the Partybox 100. No real reason to ever get one, get a Partybox 100 instead. Discontinued.
Full JBL Partybox 300 review and specifications →
| Amplifier Power | 120W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 40Hz |
| Battery Life | 18 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.2 |
| Digital Aux Input | No |
| Dimensions | 27” x 13” x 12.7” (685.8 x 330.2 x 322.6 mm) |
| Drivers | 2x 6.5” (165mm) woofers + 3x 2.25” (57mm) tweeters |
| EQ | No |
| Frequency Response | 45Hz - 20kHz (Manufacturer specified) |
| Guitar Input | Yes |
| IP Rating | None |
| Lights | Yes |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | AC Power cord |
| Stereo | Yes (lying down) |
| Strap | No |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 35.3 lbs (16 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
- Head-to-Head Comparisons
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- JBL Partybox 300 vs JBL Partybox 100
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- JBL Partybox 300 vs JBL Partybox 130
- JBL Partybox 300 vs Sony SRS-XP700
- JBL Partybox 300 vs JBL Partybox Club 120
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Samsung MX-ST50B: $300 Discontinued Amazon eBay
Pros: A 240W sound tower with two 6.5-inch woofers and two tweeters, IPX5 protection, app EQ, aux and USB playback, karaoke input and Samsung Group Play for linking up to 10 speakers. Hands-on reviews find it capable of clear, punchy sound and impressive output for indoor parties, while its 18-hour claimed battery supports more casual use away from mains power.
Cons: Output drops sharply to 90W on battery, so it needs mains power for its full impact. Bass is not as deep as stronger dedicated party speakers, and at 11.9kg its tall enclosure is less convenient to carry. It lacks TWS stereo pairing, so the Group Play feature favors shared party coverage rather than a conventional stereo image. Discontinued.
Full Samsung MX-ST50B review and specifications →
| Amplifier Power | 240W (AC) / 90W (battery) |
|---|---|
| App | Yes |
| Aux Input | Yes |
| Battery Life | 18 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | aptX, AAC, SBC |
| Bluetooth Version | 5.0 |
| Digital Aux Input | No |
| Dimensions | 13” x 26.2” x 11.9” (329 x 665 x 301 mm) |
| Drivers | 2x 6.5” woofers, 2x 2.5” tweeters |
| EQ | Yes |
| IP Rating | IPX5 |
| Lights | Yes |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Party Mode | Yes (Samsung Group Play up to 10 speakers) |
| Power Bank | Yes |
| Power Input | AC Power cord |
| Stereo | Yes |
| Strap | No |
| TWS | No |
| USB Playback | Yes |
| Weight | 26.2 lbs (11.9 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Samsung MX-ST50B vs Klipsch Gig XXL
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