Different classes, so treat this as a step-up-or-not question rather than a head-to-head. The JBL Charge 6 ranks #12 of 179 medium speakers by sound quality at $149.95; the Marshall Stockwell III ranks #84 of 120 large speakers by sound quality at $249.99.
Different sizes. The Charge 6 is a medium 2.2 lbs (990 g) speaker. The Stockwell III is a large 2.9 lbs (1.3 kg) speaker. Each is rated within its own class.
The Charge 6 is the better sounding speaker. It is more neutral than the Charge 5 through the mids and treble, with some boosted bass by default. The Oluv EQ linked on its page improves it further. It is IP68 with a claimed 24 hours, a USB-C power bank and Auracast.
The Stockwell III sounds muffled by default. Its highs are recessed even with the treble maxed, its bass can be boomy, and Oluv’s testing preferred the older Stockwell II out of the box. What it offers is over 40 hours of claimed battery, a user-replaceable battery, an aux input, a parametric app EQ and IP55.
Buy the JBL Charge 6 ($149.95) for a medium speaker; the Marshall Stockwell III ($249.99) suits a large speaker instead.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Prices on this page were last checked November 7, 2026 at 7:34 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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Specifications Side By Side
| JBL Charge 6 | Marshall Stockwell III | |
|---|---|---|
| Price | $149.95 | $249.99 |
| Ranked | #12 of 179 in Medium Size Portable Bluetooth Speakers | #84 of 120 in Large Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | No | Yes |
| Bass Extension (-10dB) | 53Hz | - |
| Battery Life | 24 hours (Manufacturer specified) | 40+ hours (Manufacturer specified) |
| Digital Aux Input | Yes (USB-C) | No |
| EQ | Yes (7 band) | Yes (parametric, via app) |
| IP Rating | IP68 | IP55 |
| Maximum SPL | 102dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (Auracast) | - |
| Power Bank | Yes (USB-C, 5V/2.4A) | Yes |
| Stereo | No | Partially |
| Omnidirectional | No | Yes |
| TWS | Yes | No |
| Weight | 2.2 lbs (990 g) | 2.9 lbs (1.3 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.4 | 5.3 |
| Dimensions | 9” x 3.9” x 3.7” (228.8 x 98.5 x 94 mm) | 7.1” x 6.4” x 2.9” (180 x 162 x 74 mm) |
| Drivers | 53mm x 93mm woofer, 20mm tweeter | 1x 3” woofer, 2x 1.75” wide-band drivers |
| Frequency Response | 56Hz - 20kHz (-6dB) (Manufacturer specified) | 54Hz - 20kHz (Manufacturer specified) |
| Power Input | USB-C | USB-C |
| Amplifier Power | 45W | 44W |
| Bluetooth Codecs | SBC, AAC | SBC, AAC, LE Audio with LC3 |
| Built-in Microphone | No | - |
| Strap | Yes (detachable strap) | Yes (detachable strap) |
Watch Them Compared
Videos and reviews that test both speakers side by side.
- Alan Ross Reviews: Marshall Stockwell 3 Unboxing (live stream)
- Alan Ross Reviews: Marshall Stockwell 3 greatest EQ settings of all time! Its sEARius!
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