Short answer: the Teufel Rockster Cross. It ranks #23 of 115 large speakers by sound quality, rated 4.2/5, at $199.99. The W-King D9 ranks #93, rated 2.5/5, at $89.98, $110.01 cheaper, not enough of a saving to outweigh the sound-quality gap.
The W-King D9 is the longer-running pick. A compact, punchy boombox with a very long rated battery, water resistance, and power bank output for casual outdoor use. It is rated for 40 hours of battery against 16 for the Teufel Rockster Cross. The tradeoff: Treble rolls off early, limiting air and fine detail, while owner reports note Bluetooth interference and some noise at maximum speaker volume.
The Teufel Rockster Cross is the better-sounding option. A splash resistant speaker with fairly neutral, vocal focused sound and punchy, controlled bass that suits rock and jazz. It supports aptX Bluetooth, which the W-King D9 lacks. The catch: Outdoor mode can sound somewhat harsh due to the 4kHz peak.
Buy the Teufel Rockster Cross. It is rated higher for sound quality, and the $110.01 you would save on the W-King D9 does not close the gap.
Want more options? Browse the full Portable Bluetooth rankings.
A compact, punchy boombox with a very long rated battery, water resistance, and power bank output for casual outdoor use.
A splash resistant speaker with fairly neutral, vocal focused sound and punchy, controlled bass that suits rock and jazz.
Prices on this page were last checked October 31, 2026 at 7:11 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
| W-King D9 | Teufel Rockster Cross | |
|---|---|---|
| Price | $89.98 | $199.99 |
| Ranked | #93 of 115 in Large Size Portable Bluetooth Speakers | #23 of 115 in Large Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 47Hz | 51Hz |
| Battery Life | 40 hours (Manufacturer specified) | 16 hours (Manufacturer specified) |
| IP Rating | IPX6 | IPX5 |
| Maximum SPL | 106dB (measured by Alan Ross Reviews) | - |
| MicroSD Playback | Yes | - |
| Power Bank | Yes (USB-A) | Yes (USB-A) |
| TWS | No | Yes |
| Weight | 4.4 lbs (2.0 kg) | 5.3 lbs (2.4 kg) |
| App | No | No |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC, aptX |
| Built-in Microphone | Yes | Yes |
| EQ | No | No |
| Party Mode | No | No |
| Power Input | USB-C | DC barrel jack |
| Stereo | Yes | Partially |
| Omnidirectional | No | No |
| Bluetooth Version | 5.3 | 5.0 |
| Dimensions | 4.7” x 12.4” x 4.7” (120 x 315 x 120 mm) | 15” x 6.3” x 5.1” (380 x 160 x 130 mm) |
| Frequency Response | 80Hz - 16kHz (Manufacturer specified) | 50Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | 60W RMS | 30W |
| Drivers | 2x 40mm drivers + passive radiators | 5” woofer, 2x textile dome tweeters + 2x passive radiators |
| Digital Aux Input | No | No |
| Strap | No | Yes (detachable shoulder strap) |
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