Short answer: the Sony ULT Field 5. It ranks #40 of 75 large speakers at $198; the Ultimate Ears Epicboom ranks #56 and costs $239.99, so there is not much of a tradeoff to weigh.
What the Sony ULT Field 5 gets right: IP67 rated, dustproof and water resistant. Set against that: Bass not as deep as others in the category, and sound quality overall is just okay.
On the Ultimate Ears Epicboom side: 17 hour battery with USB-C charging (first UE portable with USB-C). The tradeoff: Not very deep bass for the size.
Buy the Sony ULT Field 5 if the ranking matters more than the price. Buy the Ultimate Ears Epicboom if the price matters more than the ranking.
Specifications Side By Side
| Sony ULT Field 5 | Ultimate Ears Epicboom | |
|---|---|---|
| Price | $198 | $239.99 |
| Ranked | #40 of 75 in Large Size Portable Bluetooth Speakers | #56 of 75 in Large Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | Yes | Yes |
| Battery Life | 25 hours (Manufacturer specified) | 17 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC |
| Bluetooth Version | 5.3 | 5.2 |
| Built in Microphone | Yes | Yes |
| Dimensions | 12.6" x 5.67" x 4.92" (320 x 144 x 125 mm) | 4.69" x 9.49" x 6.38" (119 x 241 x 162 mm) |
| Drivers | 2x 46mm tweeters + 1x 79mm x 107mm woofer | 1x 120mm woofer, 2x 45mm tweeters |
| EQ | Yes (App + ULT button) | No |
| IP Rating | IP67 | IPX7 |
| Party Mode | Yes (Party Connect up to 100 speakers) | No |
| Power Bank | Yes | No |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| TWS | Yes | Yes |
| Weight | 7.3 lbs / 3.3 kg | 4.3 lbs / 1.97 kg |
| Output Power | 27W | 10W RMS |
| Bass Extension (-10dB) | - | ~55Hz |
| Frequency Response | - | 50Hz - 20kHz (Manufacturer specified) |
| Max Volume | - | 94dB |
The Two Speakers In Full
Sony ULT Field 5: $198 Amazon
Pros: IP67 rated, dustproof and water resistant. 25 hour battery life. App with 10-band EQ. Party Connect with up to 100 speakers. USB-C in/out for charging your phone.
Cons: Bass not as deep as others in the category, and sound quality overall is just okay. ULT button makes a really loud tone when pressed. Just an okay speaker.
| App | Yes |
|---|---|
| Aux Input | Yes |
| Battery Life | 25 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.3 |
| Built in Microphone | Yes |
| Dimensions | 12.6" x 5.67" x 4.92" (320 x 144 x 125 mm) |
| Drivers | 2x 46mm tweeters + 1x 79mm x 107mm woofer |
| EQ | Yes (App + ULT button) |
| IP Rating | IP67 |
| Output Power | 27W |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 7.3 lbs / 3.3 kg |
- Reviews, Comparisons and Sound Samples
- Danny Pops: Don’t TOUCH that ULT Button! Sony ULT Field 5 Review
- Mark Ellis Reviews: Sony just changed summer sound 🤨 | Sony ULT Field 5 & 3 Review
- Dominik Reviews: Sony ULT Field 5 vs JBL Xtreme 4 - Outdoor Sound Test - Sony shines or not?
- Joy & Oluv’Sone: Sony ULT Field 5 vs Anker SoundCore Boom 2 - listening test
- Head-to-Head Comparisons
- Sony ULT Field 5 vs JBL Xtreme 4
- Sony ULT Field 5 vs Soundcore Boom 2
- Sony ULT Field 5 vs JBL Xtreme 5
- Sony ULT Field 5 vs Marshall Stockwell 2
- Sony ULT Field 5 vs Mee audio PartySPKR
- Sony ULT Field 5 vs Sony SRS-XG300
- Sony ULT Field 5 vs Teufel Rockster Cross
- Sony ULT Field 5 vs Ultimate Ears Everboom
- Sony ULT Field 5 vs Bogasing S8 Pro
- Sony ULT Field 5 vs LG PN7
- Sony ULT Field 5 vs Marshall Middleton
- Sony ULT Field 5 vs Sony SRS-XB43
- Sony ULT Field 5 vs Soundcore Motion X600
- Sony ULT Field 5 vs Bose SoundLink Plus
- Sony ULT Field 5 vs Dockin D Fine+ 2
- Sony ULT Field 5 vs Harman Kardon Citation 200
- Sony ULT Field 5 vs JBL Xtreme 3
- Sony ULT Field 5 vs Klipsch Detroit
- Sony ULT Field 5 vs Marshall Kilburn II
- Sony ULT Field 5 vs Mifa WildCamping
- Sony ULT Field 5 vs Minirig mk2 with subwoofer
- Sony ULT Field 5 vs Minirig mk3 with subwoofer
- Sony ULT Field 5 vs Minirig mk4 with subwoofer
- Sony ULT Field 5 vs Treblab HD-Max
- Links
Ultimate Ears Epicboom: $239.99 Amazon
Pros: 17 hour battery with USB-C charging (first UE portable with USB-C). IP67 rating, floats in water. Made mostly from recycled fabric and plastic. Large best-sounding UE portable that still feels portable. 180ft Bluetooth range.
Cons: Not very deep bass for the size. Gets distorted at around 70-80% with bass thuds.
| App | No |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | ~55Hz |
| Battery Life | 17 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.2 |
| Built in Microphone | Yes |
| Dimensions | 4.69" x 9.49" x 6.38" (119 x 241 x 162 mm) |
| Drivers | 1x 120mm woofer, 2x 45mm tweeters |
| EQ | No |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Max Volume | 94dB |
| Output Power | 10W RMS |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 4.3 lbs / 1.97 kg |
- Reviews, Comparisons and Sound Samples
- Jay’s Straight Up Reviews & More: Bass Check 💣 Treblab HD-360, Ultimate Ears EpicBoom, Marshall Middleton & JBL Pulse 5. Boom or Bust?
- Jay’s Straight Up Reviews & More: $350 Ultimate Ears EpicBoom gets Epic Beat-Down 😮by $120 Soundcore Rave Neo 2. Bluetooth Speaker KO🤛
- Jay’s Straight Up Reviews & More: Bose SoundLink Max vs. Ultimate Ears EpicBoom 🤑Big Bucks No Whammies? 💣 Let’s Find Out 😧
- Head-to-Head Comparisons
- Links
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Product prices and availability were last checked August 9, 2026 at 6:57 AM UTC 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.