Short answer: the Sony ULT Tower 7 for coverage and wired inputs, the JBL PartyBox Stage 320 for compact transport. The Tower 7’s 420W, claimed 30-hour battery, rear tweeters and 360-degree seven-driver layout are built to cover a whole room, and XLR plus RCA make it easier to pair with DJ or karaoke hardware. The Stage 320 weighs less and is easier to roll between rooms or events.
The Tower 7 is the larger, feature-richer Sony option. It has 420W output, a claimed 30-hour battery, wheels, a 360-degree seven-driver layout, 10-band EQ and RCA, XLR, USB-C and microphone inputs. The PartyBox Stage 320 is a more compact battery-powered JBL with a familiar PartyBox interface and wheels.
Choose the Tower 7 for broader coverage and wired inputs: Its rear tweeters and 360-degree presentation are intended to cover more of a room, while XLR and RCA make it more accommodating for DJ or karaoke hardware.
Choose the Stage 320 for compact transport: It weighs less and is easier to roll between rooms or events. Check the side-by-side specifications below for the battery, weight and input tradeoffs.
Buy the Sony ULT Tower 7. It is rated higher for sound quality, and the $48.05 you would save on the JBL Partybox Stage 320 does not close the gap.
If battery life is a priority, the Sony ULT Tower 7 is rated for 30 hours versus 18 hours for the JBL Partybox Stage 320.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
A big, loud party speaker on wheels with punchy bass, a 30 hour battery, 360 degree sound and inputs for mics and instruments.
An excellent sounding party speaker, with deep bass that holds up at high volume, wheels, a removable battery and mic inputs.
Prices on this page were last checked October 28, 2026 at 1:06 AM 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.
Specifications Side By Side
| Sony ULT Tower 7 | JBL Partybox Stage 320 | |
|---|---|---|
| Price | $548.00 | $499.95 |
| Ranked | #1 of 50 in Party Size Portable Bluetooth Speakers | #3 of 50 in Party Size Portable Bluetooth Speakers |
| App | Yes (Sony Sound Connect) | Yes |
| Aux Input | RCA input | Yes |
| Battery Life | 30 hours (lights off; manufacturer specified) | 18 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC |
| Bluetooth Version | 5.3 | 5.4 |
| Built-in Microphone | No | - |
| Digital Aux Input | Yes (USB-C) | No |
| Dimensions | 13.7” x 16.6” x 28” (348 x 422 x 711 mm) | 26.3”H x 13.2”W x 15.2”D (669 x 335 x 385 mm) |
| Drivers | 7 drivers: 1x woofer, 2x midrange, 2x front tweeter, 2x rear tweeter | 2x 6.5” woofers, 2x 25mm tweeters |
| EQ | Yes (10 band; ULT1 / ULT2 / Flat) | Yes (5 band) |
| Guitar Input | No | Yes |
| IP Rating | IPX4 | IPX4 |
| Microphone Input | Yes | Yes (Karaoke mode with echo effect) |
| Omnidirectional | Yes (360 degree Party Sound) | No |
| Amplifier Power | 420W | 240W |
| Party Mode | Yes (Auracast) | Yes (Auracast) |
| Power Bank | Yes (USB charging) | Yes (USB-A, 5V/2.1A) |
| Power Input | AC power cord | AC Power cord |
| Removable Battery | No | Yes |
| Stereo | Yes | Partially |
| TWS | Yes (Stereo Pair) | Yes |
| USB Playback | Yes (USB-A) | Yes |
| Weight | 50.3 lbs (22.8 kg) | 36.4 lbs (16.5 kg) |
| Wi-Fi | No | - |
| Lights | Yes | Yes |
| Wheels | Yes | Yes |
| Strap | No | No |
Related Speaker Comparisons
More top alternatives to Sony ULT Tower 7: