These are not really the same size class, and that is the honest framing here. The Brane X ranks #4 of 75 large speakers at $500; the Harman Kardon Onyx Studio 5 ranks #19 of 70 boombox speakers at $499.99.
The case for the Brane X: Very deep bass, the absolute deepest from this category. The catch: Boosted upper bass ~120hz, rolled off treble, so it’s missing detail up top.
What the Harman Kardon Onyx Studio 5 gets right: Elegant circular design with carrying handle. The catch: Warm sound with boosted bass.
Buy the Brane X at $500 if you want a large speaker. Buy the Harman Kardon Onyx Studio 5 at $499.99 if you want a boombox speaker instead.
Specifications Side By Side
| Brane X | Harman Kardon Onyx Studio 5 | |
|---|---|---|
| Price | $500 | $499.99 |
| Ranked | #4 of 75 in Large Size Portable Bluetooth Speakers | #19 of 70 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Aux Latency | 295ms default, 33ms with aux pass-through | - |
| Bass Extension (-10dB) | 31Hz | - |
| Battery Life | 12 hours (Manufacturer specified) | 8 hours (Manufacturer specified) |
| Bluetooth Codecs | aptX HD, aptX, AAC, SBC | SBC |
| IP Rating | IP57 | IPX7 |
| Bluetooth Latency | 100ms | - |
| Max Volume | 106dB | - |
| Party Mode | Yes (Up to 8 speakers on wifi) | (Dual Sound up to 2 speakers) |
| Power Input | AC Power brick | AC Power brick |
| Stereo | Yes | Partially (1 woofer) |
| TWS | Yes | Yes (see https://www.reddit.com/r/Bluetooth_Speakers/comments/w339x5/how_to_harman_kardon_onyx_studio_5_6_dual_sound/) |
| Weight | 7.7 lbs / 3.5 kg | 6.6 lbs / 3 kg |
| Wifi | Yes | - |
| App | No | No |
| Built in Microphone | Yes | Yes |
| EQ | No | No |
| Power Bank | No | No |
| Dimensions | 9.3" x 7.0" x 6.1" (236 x 178 x 155 mm) | 11.25" x 11.25" |
| Drivers | 2x 2.5" midrange, 2x 0.75" tweeters + 6.5"x9" subwoofer | 2x 75mm woofers + 2x 20mm tweeters |
| Frequency Response | 30Hz - 20kHz (Manufacturer specified) | - |
| Output Power | 200W | 50W |
| USB Playback | - | No |
The Two Speakers In Full
Brane X: $500 Amazon
Pros: Very deep bass, the absolute deepest from this category. Medium bass boost is the most balanced.
Cons: Boosted upper bass ~120hz, rolled off treble, so it’s missing detail up top. Battery life isn’t great in real world use. High priced. Annoying robot voice announcements. A lot of aux input latency.
| App | No |
|---|---|
| Aux Input | Yes |
| Aux Latency | 295ms default, 33ms with aux pass-through |
| Bass Extension (-10dB) | 31Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth Codecs | aptX HD, aptX, AAC, SBC |
| Bluetooth Latency | 100ms |
| Built in Microphone | Yes |
| Dimensions | 9.3" x 7.0" x 6.1" (236 x 178 x 155 mm) |
| Drivers | 2x 2.5" midrange, 2x 0.75" tweeters + 6.5"x9" subwoofer |
| EQ | No |
| Frequency Response | 30Hz - 20kHz (Manufacturer specified) |
| IP Rating | IP57 |
| Max Volume | 106dB |
| Output Power | 200W |
| Party Mode | Yes (Up to 8 speakers on wifi) |
| Power Bank | No |
| Power Input | AC Power brick |
| Stereo | Yes |
| TWS | Yes |
| Weight | 7.7 lbs / 3.5 kg |
| Wifi | Yes |
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: This speaker left me shocked! Brane X, they said it defies the laws of physics!
- Alan Ross Reviews: Brane X vs JBL Xtreme 5: Maximum Bass, No Mercy
- Alan Ross Reviews: JBL Boombox 4 HUMILIATES Brane X?! Ultimate Bass Battle!
- Alan Ross Reviews: Minirig 2.1 or the Brane X or the Harman Kardon Go Play 3?
- mark: Brane X Speaker Review 2
- mark: Brane X Speaker Review
- Head-to-Head Comparisons
- Links
Harman Kardon Onyx Studio 5: $499.99 Amazon
Pros: Elegant circular design with carrying handle. Bass-heavy with balanced mids and highs. Rechargeable Li-ion battery rated 7-8 hours at 40-50% volume.
Cons: Warm sound with boosted bass. 8 hour battery at medium volume. Not at loud as others.
| App | No |
|---|---|
| Aux Input | Yes |
| Battery Life | 8 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Built in Microphone | Yes |
| Dimensions | 11.25" x 11.25" |
| Drivers | 2x 75mm woofers + 2x 20mm tweeters |
| EQ | No |
| IP Rating | IPX7 |
| Output Power | 50W |
| Party Mode | (Dual Sound up to 2 speakers) |
| Power Bank | No |
| Power Input | AC Power brick |
| Stereo | Partially (1 woofer) |
| TWS | Yes (see https://www.reddit.com/r/Bluetooth_Speakers/comments/w339x5/how_to_harman_kardon_onyx_studio_5_6_dual_sound/) |
| USB Playback | No |
| Weight | 6.6 lbs / 3 kg |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Links
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Product prices and availability were last checked August 9, 2026 at 6:57 AM UTC 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.