Short answer: the Ultimate Ears Boom 4, though neither ranks well in its class. It ranks #113 of 179 medium speakers by sound quality, rated 2.9/5, at $114.99. The Skullcandy Terrain XT ranks #170, rated 2.1/5, at $59.99, $55 cheaper, a saving that is not big enough to make up the sound-quality gap. Both are rated below 3.0/5 among the 179 medium speakers; for better sound, the EarFun Uboom L ranks #2 at $49.79.
The Ultimate Ears Boom 4 is the better-sounding option. A tough waterproof speaker that floats, with USB-C charging, app EQ and pairing with other UE speakers. It has an adjustable EQ, which the Skullcandy Terrain XT lacks. It plays in stereo from a single unit, unlike the Skullcandy Terrain XT. The catch: Not much improvement over the old ones.
What the Skullcandy Terrain XT does well: A waterproof speaker with a wrist wrap for carrying and pairing with other Skullcandy speakers. Watch for: Shares the Terrain line’s tuning: no bass, very rolled off treble, and distortion in the treble.
Buy the Ultimate Ears Boom 4. It is rated higher for sound quality, and saving $55 with the Skullcandy Terrain XT does not make up for the sound-quality gap.
Want more options? Browse the full 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
| Ultimate Ears Boom 4 | Skullcandy Terrain XT | |
|---|---|---|
| Price | $114.99 | $59.99 |
| Ranked | #113 of 179 in Medium Size Portable Bluetooth Speakers | #170 of 179 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Battery Life | 15 hours (Manufacturer specified) | 14 hours (Manufacturer specified) |
| IP Rating | IP67 | IPX7 |
| Power Input | USB-C | USB-C |
| Stereo | Yes | No |
| Omnidirectional | No | No |
| Weight | 1.4 lbs (620 g) | 1.6 lbs (720 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.1 | 5.3 |
| Dimensions | 7.2” x 2.9” x 2.9” (184 x 73 x 73 mm) | 3.1” x 3.1” x 6.3” (79 x 79 x 160 mm) |
| Drivers | 2x 1.57” (40mm) active drivers + 2x 1.81” x 2.57” (46.1 x 65.2mm) passive radiators | 2x 48mm drivers + passive radiators |
| TWS | Yes | Yes |
| EQ | Yes (via app) | No |
| Built-in Microphone | No | No |
| Power Bank | No | - |
| Aux Input | No | No |
| Maximum SPL | 85dBC (Manufacturer specified) | 90dB SPL (Manufacturer specified) |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC | SBC |
| Strap | Yes (built-in loop) | Yes (wrist strap) |
| Party Mode | - | Yes (SKDY Multi-Link, up to 99 speakers) |
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