Short answer: the onn Portable FM Boombox. It ranks #23 of 78 large speakers by sound quality at $74.83; the W-King T9 ranks #38 and costs $130, so there is not much of a tradeoff to weigh.
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.
What the W-King T9 offers: 80W output power, 106dB max volume, 24-hour battery life, power bank function, Bluetooth 5.3 with 100ft range, TWS stereo pairing with wireless microphone, dual subwoofers, RGB lighting, MicroSD and AUX support, USB-C charging, karaoke capability Watch for: Peaks in the upper mids which makes it sound a bit harsh.
Buy the onn Portable FM Boombox. It ranks higher for sound quality than the W-King T9 and costs less, which settles it without a real tradeoff to make.
If battery life is a priority, the W-King T9 is rated for 24 hours versus 16 hours for the onn Portable FM Boombox.
If water resistance matters to you, the onn Portable FM Boombox at IPX7 (brief submersion) holds up far better than the W-King T9 at no water resistance.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| onn Portable FM Boombox | W-King T9 | |
|---|---|---|
| Price | $74.83 | $78.83 |
| Ranked | #23 of 78 in Large Size Portable Bluetooth Speakers | #38 of 78 in Large Size Portable Bluetooth Speakers |
| Battery Life | 16 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| IP Rating | IPX7 | None |
| Amplifier Power | 25W RMS (100W peak) | 80W |
| FM Tuner | Yes (10 presets) | - |
| Built-in Microphone | Yes | Yes |
| Power Bank | Yes (USB-A) | Yes (USB-A) |
| Power Input | USB-C | USB-C |
| Weight | 4.9 lbs (2.22 kg) | 10.1 lbs (4.6 kg) |
| Dimensions | 13.8" x 5.9" x 7.7" (350 x 149 x 195 mm) | 11.8" x 5.9" x 4.7" (300 x 150 x 120 mm) |
| Drivers | 2 speakers | 2x 4.04" subwoofers + drivers |
| TWS | Yes | Yes |
| Party Mode | Yes (Party Sync, pairs with 1 other onn. speaker) | No |
| App | No | No |
| EQ | No | No |
| Aux Input | Yes | Yes |
| Digital Aux Input | No | No |
| Removable Battery | No | - |
| Discontinued | No | - |
| Omnidirectional | No | No |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) | SBC |
| Lights | Yes | Yes |
| Bass Extension (-10dB) | - | 47Hz |
| Maximum SPL | - | 106dB (measured by Alan Ross Reviews) |
| MicroSD Playback | - | Yes |
| Stereo | - | Yes |
| Bluetooth Version | - | 5.3 |
Related Speaker Comparisons
More top alternatives to onn Portable FM Boombox:
- onn Portable FM Boombox vs Vifa Helsinki
- JBL Xtreme 5 vs onn Portable FM Boombox
- Tribit Stormbox Lava vs onn Portable FM Boombox
- onn Portable FM Boombox vs Brane X
- Minirig 4 with subwoofer vs onn Portable FM Boombox
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.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Speakers In Full
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 Marshall Middleton II
- onn Portable FM Boombox vs Bose SoundLink Max
- See all 34 comparisons
W-King T9: $78.83 Amazon Aliexpress eBay
Pros: 80W output power, 106dB max volume, 24-hour battery life, power bank function, Bluetooth 5.3 with 100ft range, TWS stereo pairing with wireless microphone, dual subwoofers, RGB lighting, MicroSD and AUX support, USB-C charging, karaoke capability. Measured bass extension of 47Hz (-10dB).
Cons: Peaks in the upper mids which makes it sound a bit harsh.
Full W-King T9 review and specifications →
| Amplifier Power | 80W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 47Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 11.8" x 5.9" x 4.7" (300 x 150 x 120 mm) |
| Drivers | 2x 4.04" subwoofers + drivers |
| EQ | No |
| IP Rating | None |
| Lights | Yes |
| Maximum SPL | 106dB (measured by Alan Ross Reviews) |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 10.1 lbs (4.6 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: W-King t9 party speaker vs Soundcore Rave Neo and Trance (Rave Mega) 🥳 More from alanrossreviews →
- Alan Ross Reviews: W-King T9 or Soundcore Motion Boom - King vs World Champion! 👌
- Jay’s Straight Up Reviews & More: W-King T9 🆚 ONN Large Party Speaker -By Request for Big Tee. Can the Smaller T9 Hang With The ONN? More from JaysStraightUpReviews →
- Head-to-Head Comparisons