Short answer: the onn Portable FM Boombox. It ranks #23 of 78 large speakers by sound quality at $74.83; the Marshall Middleton II ranks #28 and costs $330, so there is not much of a tradeoff to weigh.
What the Marshall Middleton II offers: Very deep bass for the size/weight. Watch for: Bass boosted which drowns out the midrange. Dip around 200hz, peak at 1khz, dipped at 1.6khz. Strange frequency response through the mids.
What the onn Portable FM Boombox offers: Extremely good value. Reasonably deep bass, though not as deep as something like the JBL Xtreme 3, Soundcore Boom 2, or Tribit Stormbox Lava. IPX7 waterproof and floats. FM radio with 10 presets. 6 multicolor LED lighting effects. Can run on battery or corded power. Watch for: Reasonable frequency response, but not quite as smooth as some of the top-ranked speakers in this size. No custom EQ. Only available in the United States and Canada.
Buy the onn Portable FM Boombox. It ranks higher for sound quality than the Marshall Middleton II and costs less, so there is no real case for the other one.
If battery life is a priority, the Marshall Middleton II is rated for 30 hours versus 16 hours for the onn Portable FM Boombox.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Marshall Middleton II | onn Portable FM Boombox | |
|---|---|---|
| Price | $330 | $74.83 |
| Ranked | #28 of 78 in Large Size Portable Bluetooth Speakers | #23 of 78 in Large Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 38Hz | - |
| Battery Life | 30 hours (Manufacturer specified) | 16 hours (Manufacturer specified) |
| Built-in Microphone | Yes | Yes |
| EQ | Yes (5 band) | No |
| IP Rating | IP67 | IPX7 |
| Party Mode | Yes (Marshall Stack) | Yes (Party Sync, pairs with 1 other onn. speaker) |
| Power Bank | Yes (USB-C) | Yes (USB-A) |
| Power Input | USB-C | USB-C |
| Weight | 4 lbs (1.8 kg) | 4.9 lbs (2.22 kg) |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| Stereo | Yes | - |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Bluetooth Version | 5.3 | - |
| Dimensions | 9.1" x 3.9" x 4.3" (230 x 98 x 110 mm) | 13.8" x 5.9" x 7.7" (350 x 149 x 195 mm) |
| Drivers | 2x 75mm woofers, 2x 0.625" tweeters + 2x passive radiators | 2 speakers |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 80W | 25W RMS (100W peak) |
| Digital Aux Input | No | No |
| FM Tuner | - | Yes (10 presets) |
| Removable Battery | - | No |
| Discontinued | - | No |
| Lights | - | Yes |
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Prices on this page were last checked September 16, 2026 at 12:41 AM 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
Marshall Middleton II: $330 Amazon eBay
Pros: Very deep bass for the size/weight. Measured bass extension of 38Hz (-10dB).
Cons: Bass boosted which drowns out the midrange. Dip around 200hz, peak at 1khz, dipped at 1.6khz. Strange frequency response through the mids.
Full Marshall Middleton II review and specifications →
| Amplifier Power | 80W |
|---|---|
| App | Yes |
| Aux Input | Yes |
| Bass Extension (-10dB) | 38Hz |
| Battery Life | 30 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 9.1" x 3.9" x 4.3" (230 x 98 x 110 mm) |
| Drivers | 2x 75mm woofers, 2x 0.625" tweeters + 2x passive radiators |
| EQ | Yes (5 band) |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) |
| IP Rating | IP67 |
| Omnidirectional | No |
| Party Mode | Yes (Marshall Stack) |
| Power Bank | Yes (USB-C) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 4 lbs (1.8 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Marshall Middleton II vs Sonos Move
- Marshall Middleton II vs LG Xboom Bounce
- Marshall Middleton II vs Sonos Move 2
- Marshall Middleton II vs Marshall Middleton
- Marshall Middleton II vs Ultimate Ears Everboom
- Marshall Middleton II vs Soundcore Motion X500
- Marshall Middleton II vs Bose SoundLink Plus
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onn Portable FM Boombox: $74.83 Walmart eBay
Pros: Extremely good value. Reasonably deep bass, though not as deep as something like the JBL Xtreme 3, Soundcore Boom 2, or Tribit Stormbox Lava. IPX7 waterproof and floats. FM radio with 10 presets. 6 multicolor LED lighting effects. Can run on battery or corded power.
Cons: Reasonable frequency response, but not quite as smooth as some of the top-ranked speakers in this size. No custom EQ. Only available in the United States and Canada.
Full onn Portable FM Boombox review and specifications →
| Amplifier Power | 25W RMS (100W peak) |
|---|---|
| App | No |
| Aux Input | Yes |
| Battery Life | 16 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 13.8" x 5.9" x 7.7" (350 x 149 x 195 mm) |
| Discontinued | No |
| Drivers | 2 speakers |
| EQ | No |
| FM Tuner | Yes (10 presets) |
| IP Rating | IPX7 |
| Lights | Yes |
| Omnidirectional | No |
| Party Mode | Yes (Party Sync, pairs with 1 other onn. speaker) |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Removable Battery | No |
| TWS | Yes |
| Weight | 4.9 lbs (2.22 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- onn Portable FM Boombox vs Bose SoundLink Plus
- onn Portable FM Boombox vs Sonos Move 2
- onn Portable FM Boombox vs Teufel Rockster Cross
- onn Portable FM Boombox vs Soundcore Rave Neo 2
- onn Portable FM Boombox vs Soundcore Motion X600
- onn Portable FM Boombox vs JBL Xtreme 3
- onn Portable FM Boombox vs Bose SoundLink Max
- onn Portable FM Boombox vs LG Xboom Bounce
- See all 34 comparisons