Short answer: the Gemini GGO-650L, if you are buying new. The Teufel Boomster NG (2017) ranks higher than it (#52 vs #73 of 89 boombox speakers, 3.2/5 vs 2.5/5) but is discontinued, so only consider it used; the Gemini GGO-650L is still sold new at $99.95.
Why pick the Teufel Boomster NG (2017): Teufel Boomster NG (2017) uses 1x 90mm woofer + 2x 65mm midrange drivers + 2x 20mm tweeters. Watch for: Bass is limited by its 47Hz specification.
What the Gemini GGO-650L does well: At 4.2 kg, Gemini GGO-650L combines 6.5” woofer + tweeter with Bluetooth and aux. The tradeoff: Bass is limited by its ~56Hz specification.
Buy the Gemini GGO-650L new; the Teufel Boomster NG (2017) is no longer sold new, so it only makes sense as a used find.
There is a real battery-life gap here: the Teufel Boomster NG (2017) is rated for 18 hours, the Gemini GGO-650L only 10 hours.
Water resistance is not close: the Gemini GGO-650L is rated at IPX5 (water jets), well ahead of the Teufel Boomster NG (2017) at no water resistance.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Teufel Boomster NG (2017) | Gemini GGO-650L | |
|---|---|---|
| Price | €99 Discontinued | $99.95 |
| Ranked | #52 of 89 in Boombox Size Portable Bluetooth Speakers | #73 of 89 in Boombox Size Portable Bluetooth Speakers |
| Bass Extension (-10dB) | 47Hz | ~56Hz |
| Battery Life | 18 hours (Manufacturer specified) | 10 hours (Manufacturer specified) |
| IP Rating | None | IPX5 |
| Power Bank | Yes (USB-A) | No |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Weight | 7.5 lbs (3.4 kg) | 9.3 lbs (4.2 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| App | No | No |
| EQ | No | No |
| TWS | No | Yes |
| Party Mode | No | No |
| Removable Battery | Yes | - |
| USB Playback | No | Yes |
| Built-in Microphone | No | Yes |
| Power Input | USB-C | USB-C |
| Amplifier Power | 38W RMS | 100W |
| Dimensions | 5.7” x 14.6” x 7.1” (145 x 370 x 180 mm) | 11.8” x 9.1” x 15” (300 x 230 x 380 mm) |
| Drivers | 1x 90mm woofer + 2x 65mm midrange drivers + 2x 20mm tweeters | 6.5” woofer + tweeter |
| Digital Aux Input | No | No |
| Aux Input | Yes | Yes |
| Bluetooth Version | 4.0 | 5.3 |
| MicroSD Playback | - | Yes |
| FM Tuner | - | Yes |
Related Speaker Comparisons
How Teufel Boomster NG (2017) compares with other leading options:
- JBL Boombox 4 vs Teufel Boomster NG (2017)
- Harman Kardon Go + Play 2 vs Teufel Boomster NG (2017)
- Harman Kardon Onyx Studio 5 vs Teufel Boomster NG (2017)
- JBL Boombox 3 Wifi vs Teufel Boomster NG (2017)
- JBL Boombox 3 vs Teufel Boomster NG (2017)
Prices on this page were last checked September 29, 2026 at 3:43 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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The Two Speakers In Full
Teufel Boomster NG (2017): €99 Discontinued eBay
Newer model: the Teufel Boomster 4, ranked higher, rated 3.4/5.
Pros: Teufel Boomster NG (2017) uses 1x 90mm woofer + 2x 65mm midrange drivers + 2x 20mm tweeters. Its 3.4 kg, claimed 18 hours (Manufacturer specified) battery life and stereo playback make it a practical option for its intended room or portable use. The battery is removable. Measured bass extension of 47Hz (-10dB).
Cons: Bass is limited by its 47Hz specification. There is no companion app. No EQ adjustment. The bass port can make noise, and there is no water rating. Discontinued.
Full Teufel Boomster NG (2017) review and specifications →
| Amplifier Power | 38W RMS |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 47Hz |
| Battery Life | 18 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.0 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 5.7” x 14.6” x 7.1” (145 x 370 x 180 mm) |
| Drivers | 1x 90mm woofer + 2x 65mm midrange drivers + 2x 20mm tweeters |
| EQ | No |
| IP Rating | None |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Removable Battery | Yes |
| Stereo | Yes |
| TWS | No |
| USB Playback | No |
| Weight | 7.5 lbs (3.4 kg) |
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
- Head-to-Head Comparisons
- Teufel Boomster NG (2017) vs Sony ULT Field 7
- Teufel Boomster NG (2017) vs Soundcore Rave Party 2
- Teufel Boomster NG (2017) vs Teufel Boomster 2021
- Teufel Boomster NG (2017) vs JBL Partybox On the Go
- Teufel Boomster NG (2017) vs Sony SRS-XG500
- Teufel Boomster NG (2017) vs JBL Boombox
- Teufel Boomster NG (2017) vs B&O Beolit 20
- Teufel Boomster NG (2017) vs Soundcore Motion Boom+
- See all 24 comparisons
Gemini GGO-650L: $99.95 Amazon eBay
Pros: At 4.2 kg, Gemini GGO-650L combines 6.5” woofer + tweeter with Bluetooth and aux. Claimed 10 hours (manufacturer specified) battery life, ipx5 protection and stereo playback make its feature set practical for its intended room or portable use. Measured bass extension of ~56Hz (-10dB).
Cons: Bass is limited by its ~56Hz specification. There is no companion app. No EQ adjustment.
Full Gemini GGO-650L review and specifications →
| Amplifier Power | 100W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | ~56Hz |
| Battery Life | 10 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 11.8” x 9.1” x 15” (300 x 230 x 380 mm) |
| Drivers | 6.5” woofer + tweeter |
| EQ | No |
| FM Tuner | Yes |
| IP Rating | IPX5 |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 9.3 lbs (4.2 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons