These are not really the same size class, and that is the honest framing here. The JBL Flip 6 ranks #13 of 179 medium speakers by sound quality at $79.95; the JBL Xtreme 4 ranks #43 of 120 large speakers by sound quality at $309.95.
The JBL Flip 6 is the lighter option. A small, rugged speaker with very neutral sound for its size, an excellent choice for most people. At 1.2 lbs (544 g) it weighs much less than the JBL Xtreme 4 at 4.6 lbs (2.1 kg). It supports AAC Bluetooth, which the JBL Xtreme 4 lacks. Watch for: Some slight upper mids emphasis.
The JBL Xtreme 4 is the louder, longer-running choice. A rugged, waterproof speaker with clear, punchy sound, a swappable battery, a power bank and excellent real world battery life. Alan Ross Reviews measured it at 106dB at full volume, against 98dB for the JBL Flip 6. It is rated for 24 hours of battery against 12 for the JBL Flip 6. It plays in stereo from a single unit, unlike the JBL Flip 6. The tradeoff: It cannot produce the deep rumble of a larger speaker, and bass compression increases near maximum volume.
Buy the JBL Flip 6 at $79.95 if you want a medium speaker. Buy the JBL Xtreme 4 at $309.95 if you want a large speaker instead.
Want more options? Browse the full Portable Bluetooth rankings.
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Specifications Side By Side
| JBL Flip 6 | JBL Xtreme 4 | |
|---|---|---|
| Price | $79.95 | $309.95 |
| Ranked | #13 of 179 in Medium Size Portable Bluetooth Speakers | #43 of 120 in Large Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | No | No |
| Bass Extension (-10dB) | 56Hz | - |
| Battery Life | 12 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Built-in Microphone | No | Yes |
| EQ | Yes (3 band) | Yes (5 band) |
| IP Rating | IP67 | IP67 |
| Bluetooth Latency | 116ms | 220ms |
| Maximum SPL | 98dB (measured by Alan Ross Reviews) | 106dB (measured by Alan Ross Reviews) |
| Party Mode | Yes (PartyBoost up to 100 speakers) | Yes (Auracast) |
| Power Bank | No | Yes (USB-C) |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 1.2 lbs (544 g) | 4.6 lbs (2.1 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | AAC, SBC | SBC |
| Bluetooth Version | 5.1 | 5.3 |
| Dimensions | 6.9” x 2.7” x 2.8” (176 x 68 x 72 mm) | 11.7” x 5.9” x 5.6” (297 x 149 x 141 mm) |
| Drivers | 44mm x 80mm woofer, 16mm tweeter | 2x 70mm woofers, 2x 19mm tweeters + 2x passive radiators |
| Power Input | USB-C | USB-C |
| Amplifier Power | 30W | 100W |
| Digital Aux Input | No | No |
| Strap | Yes (built-in loop) | Yes (detachable shoulder strap) |
| Removable Battery | - | Yes |
| Frequency Response | - | 44Hz - 20kHz (Manufacturer specified) |
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