Short answer: the JBL Xtreme 4 for features, the Dockin D Fine+ 2 for deep bass at a lower price. The Xtreme 4 adds a removable battery, slightly deeper bass than the Xtreme 3 and a recommended EQ, but is high priced with bass boost and an upper-bass-to-midrange dip no EQ can fix. The D Fine+ 2 digs quite deep for the category, though it gives up midrange clarity to other top ranked speakers and has a dip at 1.8kHz.
In the JBL Xtreme 4’s favor: it has a removable battery, slightly deeper bass than the Xtreme 3, and there’s a recommended EQ that improves the sound further. Working against it: it’s high priced, has some bass boost, a dip in the upper bass to midrange that sounds strange and can’t be EQ’d out, and some upper mids and treble boost at high volumes.
The pitch for the Dockin D Fine+ 2: quite deep bass for the category. On the downside: it doesn’t have as much midrange clarity as other top ranked speakers and has a dip at 1.8kHz.
Buy the JBL Xtreme 4 if you want one new; the Dockin D Fine+ 2 is discontinued, so only look for it used.
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Prices on this page were last checked November 11, 2026 at 3:26 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.
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Specifications Side By Side
| JBL Xtreme 4 | Dockin D Fine+ 2 | |
|---|---|---|
| Price | $309.95 | $150 Discontinued |
| Ranked | #43 of 120 in Large Size Portable Bluetooth Speakers | #29 of 120 in Large Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | No | Yes |
| Battery Life | 24 hours (Manufacturer specified) | 16 hours (Manufacturer specified) |
| EQ | Yes (5 band) | Yes (Bass boost 3 steps) |
| IP Rating | IP67 | IPX5 |
| Bluetooth Latency | 220ms | - |
| Maximum SPL | 106dB (measured by Alan Ross Reviews) | 96dB (measured by Alan Ross Reviews) |
| Party Mode | Yes (Auracast) | No |
| Power Bank | Yes (USB-C) | Yes |
| Power Input | USB-C | USB-C |
| Removable Battery | Yes | - |
| TWS | Yes | Yes |
| Weight | 4.6 lbs (2.1 kg) | 5.1 lbs (2.3 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Built-in Microphone | Yes | Yes |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Bluetooth Version | 5.3 | 5.0 |
| Dimensions | 11.7” x 5.9” x 5.6” (297 x 149 x 141 mm) | 12.2” x 4.1” x 4.1” (310 x 103 x 103 mm) |
| Drivers | 2x 70mm woofers, 2x 19mm tweeters + 2x passive radiators | 2x tweeters, 2x midrange/bass drivers + 2x passive radiators |
| Frequency Response | 44Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 100W | 50W |
| Digital Aux Input | No | No |
| Strap | Yes (detachable shoulder strap) | - |
| Bass Extension (-10dB) | - | 45Hz |
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