Short answer: the B&O Beosound A5 on measured sound quality, the Sony ULT Field 5 on price. The B&O Beosound A5 ranks #12 of 105 large speakers, rated 4.5/5, at $1,650. The Sony ULT Field 5 ranks #56, rated 3.5/5, at $348, $1,302 cheaper.
The B&O Beosound A5 is the better-sounding pick. Ip65 protection, up to 101db and mono playback make its feature set practical for its intended room or portable use.
The Sony ULT Field 5 is the longer-running, tougher choice. A tough 7.3 lbs (3.3 kg) portable with IP67 protection, LDAC/AAC support, aux input, a 10-band app EQ, Party Connect, USB-C power-bank output and a claimed 25-hour battery. It is rated for 25 hours of battery against 12 for the B&O Beosound A5. It is rated IP67 against IP65 for the B&O Beosound A5. It supports LDAC Bluetooth, which the B&O Beosound A5 lacks. Watch for: It prioritizes bass and loudness over fidelity: reviews find the upper mids and highs subdued, with limited stereo separation and soundstage depth.
Buy the B&O Beosound A5 if sound quality matters more than the price. Buy the Sony ULT Field 5 if the price matters more than sound quality.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
At 3.86 kg, B&O Beosound A5 combines 5.25” woofer, 2x 2” fullrange, 0.8” tweeter with Bluetooth and aux.
Amazon $1,650.00 eBay
A tough 3.3kg portable with IP67 protection, LDAC/AAC support, aux input, a 10-band app EQ, Party Connect, USB-C power-bank output and a claimed 25-hour battery.
Amazon $348.00 Lowest Sony $349.99 eBayPrices on this page were last checked October 16, 2026 at 5:46 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
| B&O Beosound A5 | Sony ULT Field 5 | |
|---|---|---|
| Price | $1,650.00 | $348.00 |
| Ranked | #12 of 105 in Large Size Portable Bluetooth Speakers | #56 of 105 in Large Size Portable Bluetooth Speakers |
| IP Rating | IP65 | IP67 |
| Party Mode | Yes (Beolink Multiroom) | Yes (Party Connect up to 100 speakers) |
| Power Input | USB-C | USB-C |
| Stereo | No | Yes |
| Omnidirectional | Yes | No |
| TWS | Yes | Yes |
| Digital Aux Input | Yes (USB-C) | No |
| Weight | 8.5 lbs (3.86 kg) | 7.3 lbs (3.3 kg) |
| Wi-Fi | Yes | - |
| App | No | Yes |
| Aux Input | Yes | Yes |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC, AAC, LDAC |
| Built-in Microphone | Yes | Yes |
| EQ | No | Yes (App + ULT button) |
| Power Bank | No | Yes (USB-C) |
| Bluetooth Version | 5.2 | 5.3 |
| Dimensions | 11.2” x 7.4” x 5.1” (285 x 187 x 130 mm) | 12.6” x 5.7” x 4.9” (320 x 144 x 125 mm) |
| Drivers | 5.25” woofer, 2x 2” fullrange, 0.8” tweeter | 2x 46mm tweeters + 1x 79mm x 107mm woofer |
| Frequency Response | 32Hz - 23kHz (Manufacturer specified) | - |
| Amplifier Power | 280W | 27W |
| Maximum SPL | 101dB (Manufacturer specified) | - |
| Battery Life | 12+ hours (Manufacturer specified) | 25 hours (Manufacturer specified) |
| Strap | No | Yes (detachable shoulder strap) |
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