These are not really the same size class, and that is the honest framing here. The Sony ULT Tower Max ranks #1 of 12 large party speakers by sound quality at $1,499.99; the Soundboks Mix ranks #25 of 40 party speakers by sound quality at $799.
The case for the Sony ULT Tower Max: AudioTribe measured 110.6dBC at roughly 6m outdoors with Flat EQ and ULT1 enabled, 4.4dB above the JBL PartyBox Ultimate in the same setup. Watch for: The same comparison found it 1.2dB behind the JBL in A-weighted loudness and weaker below 40Hz.
The case for the Soundboks Mix: USB-C fast charging (65W) for the swappable battery, up to 40 hours of battery life at mid-volume, IP65 dust/water resistance, and TeamUp linking with up to 5 other SKAA-equipped Soundboks speakers. The tradeoff: Doesn’t have as deep of bass as higher-ranked speakers, and can sound somewhat bright in the treble.
Buy the Sony ULT Tower Max at $1,499.99 for a large party speaker, or the Soundboks Mix at $799 for a party speaker instead.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Sony ULT Tower Max | Soundboks Mix | |
|---|---|---|
| Price | $1,499.99 | $799 |
| Ranked | #1 of 12 in Large Party Size Portable Bluetooth Speakers | #25 of 40 in Party Size Portable Bluetooth Speakers |
| App | Yes (Sony Sound Connect) | No |
| Aux Input | RCA input | Yes |
| Battery Life | No Battery | 40 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC (additional codecs unverified) |
| Bluetooth Version | 5.3 | 4.2 |
| Built-in Microphone | No | - |
| Digital Aux Input | No | No |
| Dimensions | 21” x 41.8” x 18.6” (534 x 1062 x 472 mm) | 19.1” x 13.5” x 10.9” (484 x 342 x 276 mm) |
| Drivers | 9 drivers: 3x 11” woofer (2 front, 1 rear), 2x 4.7” midrange, 2x 1” tweeter, 2x 1.6” rear tweeter | 10” woofer, 1.2” tweeter |
| EQ | Yes (10 band; ULT1 / ULT2 / Flat / Live) | No |
| Guitar Input | No | - |
| IP Rating | Splashproof top surface | IP65 |
| Microphone Input | Yes (6.3mm) | - |
| Omnidirectional | Yes (360 degree Party Sound) | No |
| Amplifier Power | 2,150W (manufacturer specified) | 72W |
| Party Mode | Yes (Party Chain) | Yes (TeamUp, up to 5 speakers) |
| Power Bank | Yes (USB charging) | No |
| Power Input | AC 120-240V, 50/60Hz | USB-C |
| Removable Battery | No | Yes |
| Stereo | Yes | No |
| TWS | Yes (Stereo Pair) | No |
| USB Playback | Yes (USB-A) | No |
| Weight | 124.1 lbs (56.3 kg) | 21.4 lbs (9.7 kg) |
| Wi-Fi | No | - |
| Lights | Yes | - |
| Wheels | Yes | - |
| Strap | No | - |
| Frequency Response | - | 40Hz - 20kHz (Manufacturer specified) |
| Maximum SPL | - | 121dB (Manufacturer specified) |
Related Speaker Comparisons
More worthwhile head-to-heads for Sony ULT Tower Max:
- Sony ULT Tower Max vs JBL Partybox Ultimate
- Sony ULT Tower Max vs JBL Partybox 1000
- Sony ULT Tower Max vs Teufel Rockster 2
- Sony ULT Tower Max vs JBL Partybox 720
- JBL Partybox 710 vs Sony ULT Tower Max
Prices on this page were last checked September 26, 2026 at 11:14 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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The Two Speakers In Full
Sony ULT Tower Max: $1,499.99 Amazon eBay
Pros: AudioTribe measured 110.6dBC at roughly 6m outdoors with Flat EQ and ULT1 enabled, 4.4dB above the JBL PartyBox Ultimate in the same setup. Its three 11-inch woofers held about 110dB from 40-100Hz; Sony also provides 10-band EQ, Sound Field Optimization, RCA and XLR inputs, USB-C, a mic input, and XLR output.
Cons: The same comparison found it 1.2dB behind the JBL in A-weighted loudness and weaker below 40Hz. At 56.3kg (124lb) and AC-only, this is a wheeled event speaker rather than a portable battery model.
Full Sony ULT Tower Max review and specifications →
| Amplifier Power | 2,150W (manufacturer specified) |
|---|---|
| App | Yes (Sony Sound Connect) |
| Aux Input | RCA input |
| Battery Life | No Battery |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 21” x 41.8” x 18.6” (534 x 1062 x 472 mm) |
| Drivers | 9 drivers: 3x 11” woofer (2 front, 1 rear), 2x 4.7” midrange, 2x 1” tweeter, 2x 1.6” rear tweeter |
| EQ | Yes (10 band; ULT1 / ULT2 / Flat / Live) |
| Guitar Input | No |
| IP Rating | Splashproof top surface |
| Lights | Yes |
| Microphone Input | Yes (6.3mm) |
| Omnidirectional | Yes (360 degree Party Sound) |
| Party Mode | Yes (Party Chain) |
| Power Bank | Yes (USB charging) |
| Power Input | AC 120-240V, 50/60Hz |
| Removable Battery | No |
| Stereo | Yes |
| Strap | No |
| TWS | Yes (Stereo Pair) |
| USB Playback | Yes (USB-A) |
| Weight | 124.1 lbs (56.3 kg) |
| Wheels | Yes |
| Wi-Fi | No |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Sony ULT Tower Max vs JBL Partybox Ultimate
- Sony ULT Tower Max vs JBL Partybox 1000
- Sony ULT Tower Max vs Teufel Rockster 2
- Sony ULT Tower Max vs JBL Partybox 720
- Sony ULT Tower Max vs JBL Partybox 710
- Sony ULT Tower Max vs JBL Partybox 520
- Sony ULT Tower Max vs Sony ULT Tower 9
- Sony ULT Tower Max vs Sony ULT Tower 10
- See all 27 comparisons
Soundboks Mix: $799 Soundboks Amazon eBay
Older model: the Soundboks Go (rated 3.1/5).
Pros: USB-C fast charging (65W) for the swappable battery, up to 40 hours of battery life at mid-volume, IP65 dust/water resistance, and TeamUp linking with up to 5 other SKAA-equipped Soundboks speakers. High efficiency drivers reach 2-3x the volume of typical speakers for the same wattage.
Cons: Doesn’t have as deep of bass as higher-ranked speakers, and can sound somewhat bright in the treble. Only 72W of output and a single 10-inch woofer, less powerful than the Soundboks Go or Soundboks 4, and no microphone input for karaoke like the Pro Panel models.
Full Soundboks Mix review and specifications →
| Amplifier Power | 72W |
|---|---|
| App | No |
| Aux Input | Yes |
| Battery Life | 40 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC (additional codecs unverified) |
| Bluetooth Version | 4.2 |
| Digital Aux Input | No |
| Dimensions | 19.1” x 13.5” x 10.9” (484 x 342 x 276 mm) |
| Drivers | 10” woofer, 1.2” tweeter |
| EQ | No |
| Frequency Response | 40Hz - 20kHz (Manufacturer specified) |
| IP Rating | IP65 |
| Maximum SPL | 121dB (Manufacturer specified) |
| Omnidirectional | No |
| Party Mode | Yes (TeamUp, up to 5 speakers) |
| Power Bank | No |
| Power Input | USB-C |
| Removable Battery | Yes |
| Stereo | No |
| TWS | No |
| USB Playback | No |
| Weight | 21.4 lbs (9.7 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons