Short answer: it depends on whether you want a speaker or a karaoke rig. The Boom 2 ranks #10 of 120 large speakers at $99.99; the K8 ranks #73 of 113 in the boombox class at $40, $59.99 less.
The K8 is built around karaoke, not raw sound. Our own pros call it completely insane value for the money, bundling two metal-body wireless microphones, an infrared remote, and a voice-delete function that works quite well. Its cons describe a very V-curved response with boosted treble and recessed midbass.
The Boom 2 needs its own EQ correction to reach its ranked potential, moving from around #24 on stock tuning to #10 once a reviewer EQ is applied, with a single midrange driver as its structural limitation.
Buy the Boom 2 for the better pure speaker, once EQ’d. Buy the K8 if the bundled wireless microphones and karaoke features are what you actually need.
Want more options? Browse the full Portable Bluetooth rankings.
A light, waterproof large speaker with deep bass for its size, a 24 hour battery and fun lighting.
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
| Soundcore Boom 2 | ZZA K8 | |
|---|---|---|
| Price | $99.99 | $40 after clipped coupon, Discontinued |
| Ranked | #10 of 120 in Large Size Portable Bluetooth Speakers | #73 of 113 in Boombox Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | No | Yes |
| Bass Extension (-10dB) | 47Hz | - |
| Battery Life | 24 hours (Manufacturer specified) | ~30 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Built-in Microphone | No | No |
| EQ | Yes | No |
| IP Rating | IPX7 | IPX6 |
| Bluetooth Latency | 125ms | - |
| Maximum SPL | 105dB (measured by Alan Ross Reviews) | - |
| MicroSD Playback | No | - |
| Party Mode | Yes (PartyCast 2.0 up to 100 speakers) | No |
| Power Bank | Yes (USB-A) | Yes (USB-A) |
| Power Input | USB-C | USB-C |
| Stereo | Partially (1 woofer) | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 3.7 lbs (1.68 kg) | 6.8 lbs (3.1 kg) |
| Bluetooth Version | 5.3 | - |
| Dimensions | 11.7” x 7.3” x 4” (297 x 185 x 102 mm) | - |
| Drivers | 120mm x 90mm woofer, 2x 20mm tweeters | 8” woofer + tweeters |
| Frequency Response | 45Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 80W | - |
| Digital Aux Input | No | No |
| Lights | Yes | - |
| Strap | No | - |
| Outputs | - | Aux |
| Microphone Input | - | Yes |
| Wireless Microphones | - | Yes 2 Included |
| USB Playback | - | No |
| FM Tuner | - | No |
Watch Them Compared
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