These sit in different size classes, so this is not a straight ranking comparison. The Sony ULT Tower 7 ranks #1 of 53 party speakers by sound quality at $648; the Yeahbox Sonic Boom Ultra ranks #11 of 113 boombox speakers by sound quality at $388.
Different sizes. The ULT Tower 7 is a 50.3 lbs (22.8 kg) party speaker. The Sonic Boom Ultra is an 24.3 lbs (11 kg) boombox. Each is rated within its own class.
The Sonic Boom Ultra was the loudest boombox in comparison tests, with audible bass near 30Hz and HDMI ARC for TV use. It gets noisy above about 80 to 90% volume and lacks Auracast.
The ULT Tower 7 has punchy, clean ULT1 bass, 360-degree sound, a claimed 30 hours, and balanced XLR, RCA and mic inputs.
Buy the Sony ULT Tower 7 at $648 if you want a party speaker. Buy the Yeahbox Sonic Boom Ultra at $388 if you want a boombox 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
| Sony ULT Tower 7 | Yeahbox Sonic Boom Ultra | |
|---|---|---|
| Price | $648.00 | $388.00 |
| Ranked | #1 of 53 in Party Size Portable Bluetooth Speakers | #11 of 113 in Boombox Size Portable Bluetooth Speakers |
| App | Yes (Sony Sound Connect) | Yes |
| Aux Input | RCA input | Yes |
| Battery Life | 30 hours (lights off; manufacturer specified) | 24 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.3 | 6.0 |
| Built-in Microphone | No | - |
| Digital Aux Input | Yes (USB-C) | No |
| Dimensions | 13.7” x 16.6” x 28” (348 x 422 x 711 mm) | 23.4” x 9.8” x 12.3” (595 x 248 x 313 mm) |
| Drivers | 7 drivers: 1x woofer, 2x midrange, 2x front tweeter, 2x rear tweeter | 6x9in racetrack woofer (200W) + 2x 4.5in midrange (40W each) + 2x tweeters (20W each), true 3-way |
| EQ | Yes (10 band; ULT1 / ULT2 / Flat) | Yes (Country, Classic, and custom app EQ; custom settings don’t persist after the app closes) |
| Guitar Input | No | - |
| IP Rating | IPX4 | IPX6 |
| Microphone Input | Yes | - |
| Omnidirectional | Yes (360 degree Party Sound) | No |
| Amplifier Power | 420W | 320W RMS / 500W Peak |
| Party Mode | Yes (Auracast) | No (TWS stereo pairing of 2 units only, no Auracast) |
| Power Bank | Yes (USB charging) | - |
| Power Input | AC power cord | USB-C (60W fast charging) |
| Removable Battery | No | - |
| Stereo | Yes | Yes |
| TWS | Yes (Stereo Pair) | Yes |
| USB Playback | Yes (USB-A) | Yes |
| Weight | 50.3 lbs (22.8 kg) | 24.3 lbs (11 kg) |
| Wi-Fi | No | - |
| Lights | Yes | Yes |
| Wheels | Yes | - |
| Strap | No | No |
| Battery Capacity | - | 45000mAh (Reviewer estimated) |
| Inputs | - | HDMI ARC (in/out, usable as a TV soundbar), AUX in/out, USB drive, microSD, optional wired mic |
| MicroSD Playback | - | Yes |
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