Short answer: the Yeahbox Sonic Boom Ultra. It ranks #11 of 112 boombox speakers by sound quality, rated 4.2/5, at $388. The LG Xboom Stage 301 ranks #36, rated 3.7/5, at $229.99, $158.01 cheaper, not enough of a saving to outweigh the sound-quality gap.
The Yeahbox Sonic Boom Ultra is the better-sounding, longer-running pick. A massively loud boombox with deep bass, long battery life, and HDMI ARC so it can double as a TV soundbar. It is rated for 24 hours of battery against 12 for the LG Xboom Stage 301. It is rated IPX6 against IPX4 for the LG Xboom Stage 301. Watch for: The 500W peak-power rating doesn’t fully hold up: it gets noisy above roughly 80-90% volume, and the midrange isn’t fully refined, sometimes sitting a touch too forward.
The LG Xboom Stage 301 is the lighter option. A wedge shaped karaoke speaker with a swappable battery and multiple standing positions. At 13.7 lbs (6.2 kg) it weighs much less than the Yeahbox Sonic Boom Ultra at 24.3 lbs (11 kg). It links with other speakers (Auracast), which the Yeahbox Sonic Boom Ultra cannot. The tradeoff: overpriced for what it is.
Buy the Yeahbox Sonic Boom Ultra. It is rated higher for sound quality, and the $158.01 saving on the LG Xboom Stage 301 is not enough to make up the difference.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
A massively loud boombox with deep bass, long battery life, and HDMI ARC so it can double as a TV soundbar.
A wedge shaped karaoke speaker with a swappable battery and multiple standing positions.
Prices on this page were last checked October 31, 2026 at 7:11 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.
As an eBay Partner, we may be compensated if you make a purchase.
Specifications Side By Side
| Yeahbox Sonic Boom Ultra | LG Xboom Stage 301 | |
|---|---|---|
| Price | $388.00 | $229.99 |
| Ranked | #11 of 112 in Boombox Size Portable Bluetooth Speakers | #36 of 112 in Boombox Size Portable Bluetooth Speakers |
| App | Yes | Yes (LG Xboom app) |
| Aux Input | Yes | Yes |
| Battery Capacity | 45000mAh (Reviewer estimated) | - |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 6.0 | 5.4 |
| Dimensions | 23.4” x 9.8” x 12.3” (595 x 248 x 313 mm) | 8.7” x 3.1” x 3.5” (220 x 80 x 90 mm) |
| Drivers | 6x9in racetrack woofer (200W) + 2x 4.5in midrange (40W each) + 2x tweeters (20W each), true 3-way | 6.5” woofer + dual 2.5” midrange drivers (Peerless) |
| EQ | Yes (Country, Classic, and custom app EQ; custom settings don’t persist after the app closes) | Yes (App EQ) |
| Inputs | HDMI ARC (in/out, usable as a TV soundbar), AUX in/out, USB drive, microSD, optional wired mic | - |
| IP Rating | IPX6 | IPX4 |
| MicroSD Playback | Yes | - |
| Amplifier Power | 320W RMS / 500W Peak | 120W |
| Party Mode | No (TWS stereo pairing of 2 units only, no Auracast) | Yes (Auracast) |
| Power Input | USB-C (60W fast charging) | USB-C |
| Stereo | Yes | Partially (1 woofer) |
| Omnidirectional | No | No |
| TWS | Yes | No |
| USB Playback | Yes | No |
| Weight | 24.3 lbs (11 kg) | 13.7 lbs (6.2 kg) |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) | AAC, SBC |
| Lights | Yes | Yes |
| Battery Life | 24 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| Strap | No | No |
| Bass Extension (-10dB) | - | 43Hz |
| Power Bank | - | No |
| Built-in Microphone | - | No |
Related Speaker Comparisons
More top alternatives to Yeahbox Sonic Boom Ultra: