Short answer: the Sony ULT Field 7 for better sound quality, the Onn Medium Party Speaker Gen 2 for the lower price. The Sony ULT Field 7 ranks #42 of 75 boombox speakers at $400. The Onn Medium Party Speaker Gen 2 ranks #45 at $90, $310 cheaper.
What the Sony ULT Field 7 offers: Sony ULT Field 7 uses 2x 114mm x 114mm X-Balanced woofers + 2x 46mm (1.9”) tweeters. Its 6.3 kg, claimed 30 hours (Manufacturer specified) battery life, IP67 protection, aux input and stereo playback make it a practical option for its intended room or portable use. Watch for: Bass is limited by its ~52Hz specification. There is no companion app.
What the Onn Medium Party Speaker Gen 2 offers: Under $100 with LED lights synced to music. Simple controls, solid Bluetooth range. Mic input for karaoke/emcee. Built-in FM radio with 16 presets. Aux port. Watch for: Lacking detail compared to the Onn Large Party Gen 2 and not as deep of bass. Only available in the United States and Canada.
Buy the Sony ULT Field 7 if sound quality matters more than the price. Buy the Onn Medium Party Speaker Gen 2 if the price matters more than sound quality.
There is a real battery-life gap here: the Sony ULT Field 7 is rated for 30 hours, the Onn Medium Party Speaker Gen 2 only 20 hours.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Sony ULT Field 7 | Onn Medium Party Speaker Gen 2 | |
|---|---|---|
| Price | $400 | $90 |
| Ranked | #42 of 75 in Boombox Size Portable Bluetooth Speakers | #45 of 75 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | ~52Hz | - |
| Battery Life | 30 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| Guitar Input | Yes | - |
| IP Rating | IP67 | IPX7 |
| Microphone Input | Yes (Karaoke mode with echo effect) | Yes (Karaoke mode with echo effect) |
| Party Mode | Yes (Party Connect up to 100 speakers) | Yes (Party Sync Mode) |
| Power Bank | Yes (USB-A, 5V/1.5A) | Yes (USB-A, 5V/2.1A) |
| Power Input | AC Power cord | AC Power cord |
| Stereo | Yes | No |
| Omnidirectional | No | No |
| USB Playback | Yes | No |
| Weight | 13.9 lbs (6.3 kg) | 11 lbs (5 kg) |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC |
| App | No | No |
| EQ | Yes (App + ULT button) | No |
| TWS | Yes | Yes |
| Built-in Microphone | Yes | No |
| Bluetooth Version | 5.2 | - |
| Dimensions | 20.2" x 8.8" x 8.7" (512 x 224 x 222 mm) | 9.6" x 10.9" x 15.1" (244.1 x 277.9 x 383 mm) |
| Amplifier Power | 100W | 50W RMS / 200W peak |
| Drivers | 2x 114mm x 114mm X-Balanced woofers + 2x 46mm (1.9") tweeters | 8" (203mm) woofer + tweeters |
| Digital Aux Input | No | No |
| FM Tuner | - | Yes (16 presets) |
| 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
Sony ULT Field 7: $400 Amazon eBay
Pros: Sony ULT Field 7 uses 2x 114mm x 114mm X-Balanced woofers + 2x 46mm (1.9”) tweeters. Its 6.3 kg, claimed 30 hours (Manufacturer specified) battery life, IP67 protection, aux input and stereo playback make it a practical option for its intended room or portable use. Measured bass extension of ~52Hz (-10dB).
Cons: Bass is limited by its ~52Hz specification. There is no companion app.
Full Sony ULT Field 7 review and specifications →
| Amplifier Power | 100W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | ~52Hz |
| Battery Life | 30 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 20.2" x 8.8" x 8.7" (512 x 224 x 222 mm) |
| Drivers | 2x 114mm x 114mm X-Balanced woofers + 2x 46mm (1.9") tweeters |
| EQ | Yes (App + ULT button) |
| Guitar Input | Yes |
| IP Rating | IP67 |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-A, 5V/1.5A) |
| Power Input | AC Power cord |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 13.9 lbs (6.3 kg) |
- Links
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Onn Medium Party Speaker Gen 2: $90 Walmart eBay
Pros: Under $100 with LED lights synced to music. Simple controls, solid Bluetooth range. Mic input for karaoke/emcee. Built-in FM radio with 16 presets. Aux port.
Cons: Lacking detail compared to the Onn Large Party Gen 2 and not as deep of bass. Only available in the United States and Canada.
Full Onn Medium Party Speaker Gen 2 review and specifications →
| Amplifier Power | 50W RMS / 200W peak |
|---|---|
| App | No |
| Aux Input | Yes |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 9.6" x 10.9" x 15.1" (244.1 x 277.9 x 383 mm) |
| Drivers | 8" (203mm) woofer + tweeters |
| EQ | No |
| FM Tuner | Yes (16 presets) |
| IP Rating | IPX7 |
| Lights | Yes |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Party Mode | Yes (Party Sync Mode) |
| Power Bank | Yes (USB-A, 5V/2.1A) |
| Power Input | AC Power cord |
| Stereo | No |
| TWS | Yes |
| USB Playback | No |
| Weight | 11 lbs (5 kg) |
- Reviews, Comparisons and Sound Samples
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