These sit in different size classes, so this is not a straight ranking comparison. The Monster Bluetooth Speaker ranks #39 of 62 small speakers by sound quality at $19.99; the Soundcore 2 ranks #105 of 179 medium speakers by sound quality at $29.99.
The Monster Bluetooth Speaker is the lighter choice. A very cheap, light waterproof travel speaker with USB-C charging, aux and microSD playback, and stereo pairing. At 0.4 lbs (185 g) it weighs much less than the Soundcore 2 at 0.7 lbs (318 g). It charges over USB-C rather than Micro USB. The tradeoff: Its tiny 36mm driver has very limited bass (about 95Hz at -10dB), elevated mids and rolled-off highs.
The Soundcore 2 is the longer-running option. A cheap, light waterproof stereo speaker with a long rated battery, an aux input and pairing with a second unit. It is rated for 24 hours of battery against 6.5 for the Monster Bluetooth Speaker. It plays in stereo from a single unit, unlike the Monster Bluetooth Speaker. Watch for: Bass is specified only down to 70Hz, so the low end is limited.
Buy the Monster Bluetooth Speaker at $19.99 if you want a small speaker. Buy the Soundcore 2 at $29.99 if you want a medium speaker instead.
Looking for alternatives? See the complete Portable Bluetooth rankings.
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
| Monster Bluetooth Speaker | Soundcore 2 | |
|---|---|---|
| Price | $19.99 | $29.99 |
| Ranked | #39 of 62 in Small Size Portable Bluetooth Speakers | #105 of 179 in Medium Size Portable Bluetooth Speakers |
| Bluetooth Version | 5.4 | 5.0 |
| App | No | No |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 95Hz | - |
| Battery Life | 6.5 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| EQ | No | No |
| IP Rating | IPX7 | IPX7 |
| MicroSD Playback | Yes | - |
| Party Mode | No | - |
| Power Bank | No | - |
| Power Input | USB-C | Micro USB |
| Stereo | No | Yes |
| Omnidirectional | Pointing up | No |
| TWS | Yes | Yes |
| Weight | 0.4 lbs (185 g) | 0.7 lbs (318 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Built-in Microphone | Yes | No |
| Amplifier Power | 5W | 12W |
| Dimensions | Specifications vary by model | 6.6” x 1.9” x 2.2” (168 x 47 x 56 mm) |
| Drivers | 1.4” (36mm) full-range driver | 2x 38mm fullrange |
| Digital Aux Input | No | No |
| Strap | Yes (carabiner hook, suction cup) | No |
| Frequency Response | - | 70Hz - 20kHz (Manufacturer specified) |
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