Short answer: the Marshall Bromley 750 for off-axis consistency, the Sony SRS-XV900 for sheer output. The Marshall’s much wider, more consistent dispersion than a forward-firing JBL Partybox 720 is the standout, sounding about the same from any angle, though its bass is not as deep as a Partybox 330 or 720. The Sony gets slightly louder than a Partybox 310 but loses more bass at high volume.
Buy the Marshall Bromley 750 new; the Sony SRS-XV900 is no longer sold new, so it only makes sense as a used find.
If battery life is a priority, the Marshall Bromley 750 is rated for 40 hours versus 25 hours for the Sony SRS-XV900.
Water resistance is not close: the Marshall Bromley 750 is rated at IP54 (splashing), well ahead of the Sony SRS-XV900 at no water resistance.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Sony SRS-XV900 | Marshall Bromley 750 | |
|---|---|---|
| Price | $900 Discontinued | $999.95 |
| Ranked | #11 of 12 in Large Party Size Portable Bluetooth Speakers | #12 of 12 in Large Party Size Portable Bluetooth Speakers |
| App | Yes | Yes (Marshall Bluetooth app) |
| Aux Input | Yes | Yes (3.5mm, RCA) |
| Battery Life | 25 hours (Manufacturer specified) | 40+ hours (Manufacturer specified) |
| EQ | Yes | Yes |
| Guitar Input | Yes | Yes |
| Microphone Input | Yes (Karaoke mode with echo effect) | Yes (2x XLR/6.35mm combo) |
| Inputs | Optical | - |
| Party Mode | Yes (Party Connect up to 100 speakers) | Yes (Auracast) |
| Power Bank | Yes (USB-A) | Yes (USB-C) |
| Power Input | AC Power cord | USB-C |
| Removable Battery | No | Yes |
| USB Playback | Yes | No |
| Weight | 58.6 lbs (26.6 kg) | 52.7 lbs (23.9 kg) |
| Built-in Microphone | No | No |
| IP Rating | None | IP54 |
| Stereo | Yes | Yes |
| Omnidirectional | No | Yes |
| TWS | Yes | No |
| Wi-Fi | No | No |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC, AAC, LC3 |
| Bluetooth Version | 5.2 | 5.3 |
| Dimensions | 16.1” x 34.6” x 17.3” (410 x 880 x 439 mm) | 16.3” x 25.7” x 14” (413 x 652 x 355 mm) |
| Drivers | 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 | 2x 10” woofers, 2x 5.25” mid-ranges, 2x 1” tweeters, 2x 0.8” tweeters |
| Amplifier Power | 100W | 400W |
| Digital Aux Input | No | Yes (USB-C) |
| Lights | Yes | Yes |
| Wheels | Yes | - |
| Strap | No | No |
| XLR Input | - | Yes (2x combo) |
| Charging Time | - | 3.5 hours |
| Frequency Response | - | 20Hz - 20kHz (Manufacturer specified) |
Related Speaker Comparisons
How Sony SRS-XV900 compares with other leading options:
- JBL Partybox Ultimate vs Sony SRS-XV900
- JBL Partybox 1000 vs Sony SRS-XV900
- Teufel Rockster 2 vs Sony SRS-XV900
- JBL Partybox 720 vs Sony SRS-XV900
- JBL Partybox 710 vs Sony SRS-XV900
Prices on this page were last checked October 2, 2026 at 10:18 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.
The Two Speakers In Full
Sony SRS-XV900: $900 Discontinued eBay
Newer model: the Sony ULT Tower 9, ranked higher, rated 4.2/5.
Pros: It can get slightly louder than a JBL Partybox 310. Nine drivers, including side and rear tweeters, spread sound around the room, and it adds a battery rated for 25 hours, LDAC and AAC Bluetooth, an optical input, mic and guitar inputs and Party Connect linking. A handle and wheels make the 26.6 kg cabinet easy to move.
Cons: Not as deep of bass and loses more bass at high volume compared to the Partybox 310 and every other speaker on this page. Discontinued; Sony replaced the XV line with the ULT Tower series.
Full Sony SRS-XV900 review and specifications →
| Amplifier Power | 100W |
|---|---|
| App | Yes |
| Aux Input | Yes |
| Battery Life | 25 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.2 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 16.1” x 34.6” x 17.3” (410 x 880 x 439 mm) |
| Drivers | 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 |
| EQ | Yes |
| Guitar Input | Yes |
| IP Rating | None |
| Inputs | Optical |
| Lights | Yes |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-A) |
| Power Input | AC Power cord |
| Removable Battery | No |
| Stereo | Yes |
| Strap | No |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 58.6 lbs (26.6 kg) |
| Wheels | Yes |
| Wi-Fi | No |
- Links
- Reviews, Comparisons and Sound Samples
- Jay’s Straight Up Reviews & More: Sony SRS-XV900 vs JBL Partybox 310 - Can the JBL Middleweight 💪🏽 Compete With The Sony Heavyweight? More from JaysStraightUpReviews →
- Jay’s Straight Up Reviews & More: JBL Partybox 710 ☣️ vs Sony SRS XV900 ☢️- Basement Brawl Speaker Comparison. Can XV900 Top the 710❓
- GYMCADDY: Sony XV900 Review - Finally, A Good Speaker From Sony! More from GYMCADDY →
- Head-to-Head Comparisons
- Sony SRS-XV900 vs Sony ULT Tower 10
- Sony SRS-XV900 vs Sony ULT Tower 9
- Sony SRS-XV900 vs Teufel Rockster
- Sony SRS-XV900 vs JBL Partybox 520
- Sony SRS-XV900 vs JBL Partybox 710
- Sony SRS-XV900 vs JBL Partybox 720
- Sony SRS-XV900 vs Teufel Rockster 2
- Sony SRS-XV900 vs JBL Partybox 1000
- See all 15 comparisons
Marshall Bromley 750: $999.95 Amazon eBay
Pros: Much wider, more consistent off-axis dispersion than the JBL Partybox 720, which only fires forward: the Marshall’s standout feature, sounding about the same from any angle.
Cons: Not as deep bass as the JBL Partybox 330 or JBL Partybox 720. Not a great frequency response overall, with some midrange peaks. Only basic bass/treble controls, no full custom EQ like the JBL Partybox 720’s app. Default bass (dynamic mode) is overdone out of the box and needs trimming.
Full Marshall Bromley 750 review and specifications →
| Amplifier Power | 400W |
|---|---|
| App | Yes (Marshall Bluetooth app) |
| Aux Input | Yes (3.5mm, RCA) |
| Battery Life | 40+ hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC, LC3 |
| Bluetooth Version | 5.3 |
| Built-in Microphone | No |
| Charging Time | 3.5 hours |
| Digital Aux Input | Yes (USB-C) |
| Dimensions | 16.3” x 25.7” x 14” (413 x 652 x 355 mm) |
| Drivers | 2x 10” woofers, 2x 5.25” mid-ranges, 2x 1” tweeters, 2x 0.8” tweeters |
| EQ | Yes |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) |
| Guitar Input | Yes |
| IP Rating | IP54 |
| Lights | Yes |
| Microphone Input | Yes (2x XLR/6.35mm combo) |
| Omnidirectional | Yes |
| Party Mode | Yes (Auracast) |
| Power Bank | Yes (USB-C) |
| Power Input | USB-C |
| Removable Battery | Yes |
| Stereo | Yes |
| Strap | No |
| TWS | No |
| USB Playback | No |
| Weight | 52.7 lbs (23.9 kg) |
| Wi-Fi | No |
| XLR Input | Yes (2x combo) |
- Links
- Reviews, Comparisons and Sound Samples
- Joy & Oluv’Sone: Marshall Bromley 750 vs JBL Partybox 720 - outdoor test More from Oluv’Sone →
- Storytripper HD: W-King T12 vs Marshall Bromley 750 More from storytripperhd →
- Danny Pops: I Finally Got The Marshall Bromley 750 Everyone Wanted More from DannyPops →
- Oluv Patreon: JBL Partybox 720 vs Marshall Bromley 750
- Oluv Patreon: Marshall Bromley 750 - battery issues in the cold
- Oluv Patreon: Marshall Bromley 750 & Teufel Rockster Air 2 - outdoor test
- Oluv Patreon: Marshall Bromley 750 - 2nd look after update
- Oluv Patreon: Marshall Bromley 750 - first impressions
- Head-to-Head Comparisons
- Marshall Bromley 750 vs Sony ULT Tower 10
- Marshall Bromley 750 vs Sony ULT Tower 9
- Marshall Bromley 750 vs Teufel Rockster
- Marshall Bromley 750 vs JBL Partybox 520
- Marshall Bromley 750 vs JBL Partybox 710
- Marshall Bromley 750 vs JBL Partybox 720
- Marshall Bromley 750 vs Teufel Rockster 2
- Marshall Bromley 750 vs JBL Partybox 1000
- See all 17 comparisons