Short answer: the Onn Medium Party Speaker Gen 2. It ranks #65 of 113 boombox speakers by sound quality, rated 3.1/5, at $90; the Monster Rockin’ Roller 270 ranks #104, rated 2.1/5, and costs $208.99, so there is little reason to consider the other one.
The Onn Medium Party Speaker Gen 2 is the better-sounding, lighter option. An affordable waterproof party speaker with a big woofer, lights, a karaoke mic input and FM radio. At 11 lbs (5 kg) it weighs much less than the Monster Rockin’ Roller 270 at 28.7 lbs (13 kg). It is rated IPX7 against IPX4 for the Monster Rockin’ Roller 270. It links with other speakers (Party Sync Mode), which the Monster Rockin’ Roller 270 cannot. The catch: Lacking detail compared to the Onn Large Party gen 2 and not as deep of bass.
The Monster Rockin’ Roller 270 is the longer-running choice. A wheeled party speaker with an enormous battery, sound spread wide around it and a wireless phone charging pad. It is rated for 100 hours of battery against 20 for the Onn Medium Party Speaker Gen 2. It has an adjustable EQ, which the Onn Medium Party Speaker Gen 2 lacks. Watch for: Bass not as deep as competitors, less neutral than ION speakers.
Buy the Onn Medium Party Speaker Gen 2. It is rated higher for sound quality than the Monster Rockin’ Roller 270 and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
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Specifications Side By Side
| Onn Medium Party Speaker Gen 2 | Monster Rockin’ Roller 270 | |
|---|---|---|
| Price | $90 | $208.99 |
| Ranked | #65 of 113 in Boombox Size Portable Bluetooth Speakers | #104 of 113 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Battery Life | 20 hours (Manufacturer specified) | 100 hours (Manufacturer specified) |
| FM Tuner | Yes (16 presets) | Yes |
| IP Rating | IPX7 | IPX4 |
| Microphone Input | Yes (Karaoke mode with echo effect) | - |
| Party Mode | Yes (Party Sync Mode) | No |
| Power Bank | Yes (USB-A, 5V/2.1A) | Yes (USB-A, 5V/2.1A) |
| Power Input | AC Power cord | USB-C |
| Stereo | No | No |
| Omnidirectional | No | No |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| App | No | Yes (Monster Zone Control app) |
| EQ | No | Yes |
| TWS | Yes | Yes |
| USB Playback | No | No |
| Built-in Microphone | No | No |
| Amplifier Power | 50W RMS / 200W peak | 200W |
| Dimensions | 9.6” x 10.9” x 15.1” (244.1 x 277.9 x 383 mm) | 15” x 18.6” x 10.9” (381 x 472 x 276 mm) |
| Weight | 11 lbs (5 kg) | 28.7 lbs (13 kg) |
| Drivers | 8” (203mm) woofer + tweeters | 2x 3” (76mm) woofers + 2x tweeters (size undisclosed) |
| Digital Aux Input | No | No |
| Lights | Yes | - |
| Bass Extension (-10dB) | - | 53Hz |
| Bluetooth Version | - | 5.0 |
| Maximum SPL | - | 96dB (Manufacturer specified) |
| Wheels | - | Yes |
| Strap | - | No |
Where the Ratings Come From
- Onn Medium Party Speaker Gen 2: reviews by Jay’s Straight Up Reviews & More.
- Monster Rockin’ Roller 270: reviews by Charles BridgTec and Wanna Buy It.
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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