Short answer: the EarFun Uboom L. It ranks #2 of 179 medium speakers by sound quality, rated 4.6/5, at $49.79; the Teufel Rockster Go 2 ranks #93, rated 3.2/5, and costs $99.99, so there is little reason to consider the other one.
The EarFun Uboom L is the better-sounding pick. A great value medium speaker with clear, natural sound, waterproofing, and a Video Mode that keeps audio in sync with video. It keeps a wired aux input, which the Teufel Rockster Go 2 lacks. The catch: It cannot produce real low-bass rumble or fill a large, noisy space, and the top end loses some detail.
The case for the Teufel Rockster Go 2: A light, rugged waterproof speaker with very long battery life in eco mode, stereo pairing and a tripod mount. It links with other speakers (Party Link, up to 100 speakers), which the EarFun Uboom L cannot. The catch: There is no companion app or 3.5 mm input.
Buy the EarFun Uboom L. It is rated higher for sound quality than the Teufel Rockster Go 2 and costs less, so only choose the other one for a particular feature it does better.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
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Specifications Side By Side
| EarFun Uboom L | Teufel Rockster Go 2 | |
|---|---|---|
| Price | $49.79 after coupon UBOOMLWC | $99.99 |
| Ranked | #2 of 179 in Medium Size Portable Bluetooth Speakers | #93 of 179 in Medium Size Portable Bluetooth Speakers |
| App | Yes (firmware >= 1.2.6) | Yes (Teufel Go) |
| Aux Input | Yes | No |
| Aux Latency | 216ms | - |
| Bass Extension (-10dB) | 56Hz | - |
| Battery Life | 16 hours (Manufacturer specified) | 15 hours, 28 with Eco Mode (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | AAC, SBC | SBC, AAC |
| Built-in Microphone | Yes | No |
| EQ | Yes (10 band, firmware >= 1.2.6) | Yes |
| IP Rating | IP67 | IP67 |
| Bluetooth Latency | 400ms normal / 66ms low latency mode | - |
| Maximum SPL | 103dB (measured by Alan Ross Reviews) | - |
| Party Mode | No | Yes (Party Link, up to 100 speakers) |
| Power Bank | No | No |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 1.4 lbs (650 g) | 1.6 lbs (735 g) |
| Bluetooth Version | 5.0 | - |
| Dimensions | 3.1” x 8.3” x 2.8” (78 x 210 x 72 mm) | 8.3” x 4.3” x 2.4” (211 x 109 x 61 mm) |
| Drivers | 2x 55mm drivers + 2x passive radiators | 2x 50mm wide-band drivers + 1x 64mm passive radiator |
| Amplifier Power | 28W | 8W |
| Digital Aux Input | No | Yes (USB-C sound card) |
| USB Playback | - | No |
| Frequency Response | - | 60Hz - 20kHz (Manufacturer specified) |
| Charging Time | - | 2.5 hours (Manufacturer specified) |
| Strap | - | Yes (detachable strap) |
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