Short answer: the Vifa Helsinki on measured sound quality, the W-King D9 on price. The Vifa Helsinki ranks #1 of 78 large speakers at $449. The W-King D9 ranks #66 at $71.24, $377.76 cheaper.
What the W-King D9 offers: A compact 2kg boombox with 60W RMS output, a claimed 106dB maximum level, a measured 47Hz -10dB bass point, IPX6 protection, power-bank output, USB-C charging, aux and microSD playback. Long-term owners praise its loud, punchy character and useful indoor/outdoor voicing for casual outdoor listening. Watch for: Treble rolls off early, limiting air and fine detail, while owner reports note Bluetooth interference and some noise at maximum speaker volume. There is no app or adjustable EQ, and its bass does not reach as deep as larger rivals, so it is better suited to energetic background music than neutral listening.
What the Vifa Helsinki offers: Generally regarded as the best midrange and treble sound quality of any battery powered Bluetooth speaker. Watch for: No TWS pairing, looks like a purse, requires a hacked Vifa app (Android only post #48) to enable night mode to sound good. Not sure I can recommend this one generally these days, the Uboom L has 98% of the sound quality with more features and a way cheaper price. There are mentions that the 2022 “new” version of this speaker doesn’t sound as good as Vifa was purchased by a Chinese company and laid off all the great sound engineers in the Austria office.
Buy the W-King D9 if the price is the priority over sound quality, or the Vifa Helsinki if sound quality is the priority over the price.
Skip the W-King D9 if sound quality matters to you. It ranks near the bottom of the 78 large speakers.
There is a real battery-life gap here: the W-King D9 is rated for 40 hours, the Vifa Helsinki only 8 hours.
There is a real gap in water resistance: the W-King D9 at IPX6 (powerful water jets) against the Vifa Helsinki, which has no water resistance.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| W-King D9 | Vifa Helsinki | |
|---|---|---|
| Price | $71.24 | $449.00 |
| Ranked | #66 of 78 in Large Size Portable Bluetooth Speakers | #1 of 78 in Large Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 47Hz | 48Hz |
| Battery Life | 40 hours (Manufacturer specified) | 8 hours (Manufacturer specified) |
| IP Rating | IPX6 | None |
| Maximum SPL | 106dB (measured by Alan Ross Reviews) | - |
| MicroSD Playback | Yes | - |
| Power Bank | Yes (USB-A) | No |
| TWS | No | No |
| Weight | 4.4 lbs (2.0 kg) | 3.1 lbs (1.4 kg) |
| App | No | No (official app is broken, 3rd party android app only) |
| Bluetooth Codecs | SBC | aptX, SBC |
| Built-in Microphone | Yes | Yes |
| EQ | No | No |
| Party Mode | No | No |
| Power Input | USB-C | AC Power brick |
| Stereo | Yes | Partially (shared woofer) |
| Omnidirectional | No | No |
| Bluetooth Version | 5.3 | 4.1 |
| Dimensions | 4.7" x 12.4" x 4.7" (120 x 315 x 120 mm) | 6.1" x 8.3" x 2.8" (156 x 210 x 70 mm) |
| Frequency Response | 80Hz - 16kHz (Manufacturer specified) | 58Hz - 18kHz (Manufacturer specified) |
| Amplifier Power | 60W RMS | Specs not published by manufacturer |
| Drivers | 2x 40mm drivers + passive radiators | 2x 50mm fullrange, 2x 66mm woofers + 2x passive radiators |
| Digital Aux Input | No | No |
Related Speaker Comparisons
How Vifa Helsinki compares with other leading options:
- JBL Xtreme 5 vs Vifa Helsinki
- Tribit Stormbox Lava vs Vifa Helsinki
- Brane X vs Vifa Helsinki
- Minirig 4 with subwoofer vs Vifa Helsinki
- Soundcore Boom 2 vs Vifa Helsinki
Prices on this page were last checked September 16, 2026 at 12:41 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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The Two Speakers In Full
W-King D9: $71.24 Amazon eBay
Pros: A compact 2kg boombox with 60W RMS output, a claimed 106dB maximum level, a measured 47Hz -10dB bass point, IPX6 protection, power-bank output, USB-C charging, aux and microSD playback. Long-term owners praise its loud, punchy character and useful indoor/outdoor voicing for casual outdoor listening. Measured bass extension of 47Hz (-10dB).
Cons: Treble rolls off early, limiting air and fine detail, while owner reports note Bluetooth interference and some noise at maximum speaker volume. There is no app or adjustable EQ, and its bass does not reach as deep as larger rivals, so it is better suited to energetic background music than neutral listening.
Full W-King D9 review and specifications →
| Amplifier Power | 60W RMS |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 47Hz |
| Battery Life | 40 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 4.7" x 12.4" x 4.7" (120 x 315 x 120 mm) |
| Drivers | 2x 40mm drivers + passive radiators |
| EQ | No |
| Frequency Response | 80Hz - 16kHz (Manufacturer specified) |
| IP Rating | IPX6 |
| Maximum SPL | 106dB (measured by Alan Ross Reviews) |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | No |
| Weight | 4.4 lbs (2.0 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Vifa Helsinki: $449.00 Amazon eBay
Pros: Generally regarded as the best midrange and treble sound quality of any battery powered Bluetooth speaker. Measured bass extension of 48Hz (-10dB).
Cons: No TWS pairing, looks like a purse, requires a hacked Vifa app (Android only post #48) to enable night mode to sound good. Not sure I can recommend this one generally these days, the Uboom L has 98% of the sound quality with more features and a way cheaper price. There are mentions that the 2022 “new” version of this speaker doesn’t sound as good as Vifa was purchased by a Chinese company and laid off all the great sound engineers in the Austria office.
Full Vifa Helsinki review and specifications →
| Amplifier Power | Specs not published by manufacturer |
|---|---|
| App | No (official app is broken, 3rd party android app only) |
| Aux Input | Yes |
| Bass Extension (-10dB) | 48Hz |
| Battery Life | 8 hours (Manufacturer specified) |
| Bluetooth Codecs | aptX, SBC |
| Bluetooth Version | 4.1 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 6.1" x 8.3" x 2.8" (156 x 210 x 70 mm) |
| Drivers | 2x 50mm fullrange, 2x 66mm woofers + 2x passive radiators |
| EQ | No |
| Frequency Response | 58Hz - 18kHz (Manufacturer specified) |
| IP Rating | None |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | No |
| Power Input | AC Power brick |
| Stereo | Partially (shared woofer) |
| TWS | No |
| Weight | 3.1 lbs (1.4 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Vifa Helsinki vs JBL Xtreme 5
- Vifa Helsinki vs Tribit Stormbox Lava
- Vifa Helsinki vs Brane X
- Vifa Helsinki vs Minirig 4 with subwoofer
- Vifa Helsinki vs Soundcore Boom 2
- Vifa Helsinki vs Marshall Stockwell 2
- Vifa Helsinki vs Soundcore Motion Boom
- Vifa Helsinki vs Bose SoundLink Max
- See all 39 comparisons