Short answer: the Sony ULT Tower 9. It ranks #10 of 13 large party speakers at $898, ahead of the SRS-XV900 at #12 and $900, so there is not much of a tradeoff to weigh.
Both speakers share the same core weakness. The ULT Tower 9’s own notes say it does not go as deep in the bass and loses more of it at high volume, even compared with cheaper Partybox speakers. The SRS-XV900’s notes are more pointed still: it loses bass at high volume compared with the Partybox 310 and every other speaker in this comparison. The one credited strength for the ULT Tower 9 is sounding slightly better than the ULT Tower 10; the SRS-XV900’s credited strength is getting slightly louder than a Partybox 310, plus a convenient handle and wheels.
The SRS-XV900 has two extra drivers (nine total, including side tweeters the ULT Tower 9 lacks) and an optical input the ULT Tower 9 does not have, but runs at a lower 100W rated output against the ULT Tower 9’s 148W.
Buy the Sony ULT Tower 9. It ranks higher, costs less, and is the model Sony is still actively selling.
Skip the Sony SRS-XV900 unless you find one at a steep discount secondhand. Sony has moved on from the XV line, and its own notes rate its bass behavior as the weakest of the two.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Prices on this page were last checked November 14, 2026 at 6:17 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 9 | Sony SRS-XV900 | |
|---|---|---|
| Price | $898.00 | $900 Discontinued |
| Ranked | #10 of 13 in Large Party Size Portable Bluetooth Speakers | #12 of 13 in Large Party Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | Yes | Yes |
| Battery Life | 25 hours (Manufacturer specified) | 25 hours (Manufacturer specified) |
| EQ | Yes (10 band) | Yes |
| Guitar Input | Yes | Yes |
| Microphone Input | Yes (Karaoke mode with echo effect) | Yes (Karaoke mode with echo effect) |
| Party Mode | Yes (Auracast up to 100 speakers) | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-A, 5V/1.5A) | Yes (USB-A) |
| Power Input | AC Power cord | AC Power cord |
| Removable Battery | No | No |
| TWS | Yes | Yes |
| USB Playback | Yes | Yes |
| Weight | 65.3 lbs (29.6 kg) | 58.6 lbs (26.6 kg) |
| Built-in Microphone | No | No |
| IP Rating | None | None |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Wi-Fi | No | No |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC, AAC, LDAC |
| Bluetooth Version | 5.3 | 5.2 |
| Dimensions | 16.1” x 35.8” x 18” (410 x 910 x 456 mm) | 16.1” x 34.6” x 17.3” (410 x 880 x 439 mm) |
| Drivers | 7 drivers: 1x 12.6”x12.6” woofer, 2x 4.7” midrange, 2x 2” tweeter, 2x 1.6” rear tweeter | 9 drivers: 1x 12.6”x12.6” woofer, 2x 4.7” midrange, 2x 2” front tweeter, 2x 1.6” side tweeter, 2x 1.6” rear tweeter |
| Amplifier Power | 148W | 100W |
| Digital Aux Input | No | No |
| Lights | Yes | Yes |
| Strap | No | No |
| Inputs | - | Optical |
| Wheels | - | Yes |
Where the Ratings Come From
- Sony ULT Tower 9: reviews by Joy & Oluv’Sone 3DAudio & Music, Oluv and GYMCADDY.
- Sony SRS-XV900: reviews by Jay’s Straight Up Reviews & More and GYMCADDY.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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