Short answer: the Taipuu Kero Active Stream. It ranks #13 of 118 powered bookshelf speakers by sound quality (rated 4.7/5); the GGNTKT M1 ranks #19 (rated 4.6/5).
What the Taipuu Kero Active Stream does well: A Finnish active stand-mount with a 6.5” woofer, two 6.5” passive radiators and a 1” aluminium tweeter, 100W per speaker, DSP and built-in streaming: Chromecast, AirPlay 2, Spotify Connect, Bluetooth, HDMI ARC and optical. Watch for: That data comes from Taipuu and has not been independently verified.
What the GGNTKT M1 does well: The manufacturer-supplied monopole measurement shows a 1.6dB response span from 300Hz to 5kHz, 33.8Hz -3dB extension and a 7.03 ideal-subwoofer score. The catch: The cited measurement is specifically monopole, so it cannot substantiate claims about cardioid-mode performance.
Buy the Taipuu Kero Active Stream. It is rated higher for sound quality than the GGNTKT M1.
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Specifications Side By Side
| Taipuu Kero Active Stream | GGNTKT M1 | |
|---|---|---|
| Price | €7,600 per pair | £7,500 per pair |
| Ranked | #13 of 118 in Large Size Powered Bookshelf Speakers | #19 of 118 in Large Size Powered Bookshelf Speakers |
| XLR Input | No | Yes |
| RCA Input | No | No |
| TRS Input | No | No |
| Optical Input | Yes | No |
| Coaxial Input | No | No |
| USB Input | Yes | No |
| HDMI Input | Yes | No |
| AES Input | No | Yes |
| Aux Input | No | No |
| Bluetooth | Yes | No |
| Inputs | HDMI ARC, optical, 3.5mm analog, Wi-Fi streaming, Bluetooth | XLR (balanced analog), XLR AES/EBU (digital), USB (calibration/control only, not an audio input) |
| Wi-Fi | Yes | - |
| Drivers | 6.5” woofer, 2x 6.5” passive radiators, 1” aluminium dome tweeter | 1.75” titanium ring diaphragm compression tweeter with waveguide, 3x 6.5” aluminum cone woofers (1 front, 2 rear firing, cardioid) |
| Amplifier Power | 200W per pair (4x 50W) | 560W total (70W tweeter, 210W woofers per channel, Class D) |
| Frequency Response | 31Hz-24kHz -6dB (manufacturer specified) | 36Hz-20kHz -3dB |
| Dimensions | 15”H x 8.3”W x 11.8”D (380 x 210 x 300 mm) | 12.6”H x 15.9”W x 5.5”D (319 x 405 x 140 mm) |
| Weight | 20.9 lbs (9.5 kg) each | 24.3 lbs (11.0 kg) each |
| Bass Extension (-3dB) | 34.1Hz (measured, manufacturer data via spinorama.org) | 33.8Hz (measured, spinorama.org vendor data) |
| Bass Extension (-10dB) | about 28.6Hz (measured, manufacturer data via spinorama.org) | 28.2Hz (measured, spinorama.org vendor data) |
| Spinorama Preference Score | 7.57 | - |
| Spinorama Preference Score with Perfect Sub | 8.98 | - |
| DIY Kit | No | - |
| Enclosure | - | sealed |
| Warranty | - | 3 years (with registration) |
| Country | - | Germany |
| Maximum SPL | - | 112.8dB @ 1m (manufacturer specified) |
Frequency Response Compared
Both speakers’ spinorama measurements, overlaid. A flatter line is more neutral: peaks sound forward or harsh, dips sound recessed. Each curve is shifted so its average from 300 Hz to 3 kHz sits at 0 dB, so loudness differences between the two are removed and only the shape is compared.
Measurement data: Taipuu Kero Active Stream (measured by the manufacturer) and GGNTKT M1 (measured by the manufacturer), via spinorama.org.
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Prices on this page were last checked October 11, 2026 at 4:59 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
Taipuu Kero Active Stream: €7,600 per pair Audiokauppa eBay
Pros: A Finnish active stand-mount with a 6.5” woofer, two 6.5” passive radiators and a 1” aluminium tweeter, 100W per speaker, DSP and built-in streaming: Chromecast, AirPlay 2, Spotify Connect, Bluetooth, HDMI ARC and optical. Taipuu’s measurements show an exceptionally flat response (0.08 on-axis deviation) and deep bass, 34.1Hz (-3dB), for a preference score of 7.57.
Cons: That data comes from Taipuu and has not been independently verified. It is sold mainly through Finnish retailers.
Full Taipuu Kero Active Stream review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 200W per pair (4x 50W) |
| Aux Input | No |
| Bass Extension (-10dB) | about 28.6Hz (measured, manufacturer data via spinorama.org) |
| Bass Extension (-3dB) | 34.1Hz (measured, manufacturer data via spinorama.org) |
| Bluetooth | Yes |
| Coaxial Input | No |
| DIY Kit | No |
| Dimensions | 15”H x 8.3”W x 11.8”D (380 x 210 x 300 mm) |
| Drivers | 6.5” woofer, 2x 6.5” passive radiators, 1” aluminium dome tweeter |
| Frequency Response | 31Hz-24kHz -6dB (manufacturer specified) |
| HDMI Input | Yes |
| Inputs | HDMI ARC, optical, 3.5mm analog, Wi-Fi streaming, Bluetooth |
| Optical Input | Yes |
| RCA Input | No |
| Spinorama Preference Score | 7.57 |
| Spinorama Preference Score with Perfect Sub | 8.98 |
| TRS Input | No |
| USB Input | Yes |
| Weight | 20.9 lbs (9.5 kg) each |
| Wi-Fi | Yes |
| XLR Input | No |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
GGNTKT M1: £7,500 per pair Purite Audio (UK) eBay
Same family: the GGNTKT M3 (floorstanding, rated 4.7/5).
Pros: The manufacturer-supplied monopole measurement shows a 1.6dB response span from 300Hz to 5kHz, 33.8Hz -3dB extension and a 7.03 ideal-subwoofer score. Those results support even midrange balance and useful bass from a relatively shallow cabinet. Measured bass extension of 33.8Hz (-3dB).
Cons: The cited measurement is specifically monopole, so it cannot substantiate claims about cardioid-mode performance. Outboard electronics add cabling and installation complexity; confirm the complete system configuration before purchase. On-axis narrow-band deviation of 0.475dB is rougher than its listening-window smoothness, so a listener dead center may hear more unevenness than the off-axis figures suggest.
Full GGNTKT M1 review and specifications →
| Released | 2019 (7 years ago) |
|---|---|
| AES Input | Yes |
| Amplifier Power | 560W total (70W tweeter, 210W woofers per channel, Class D) |
| Aux Input | No |
| Bass Extension (-10dB) | 28.2Hz (measured, spinorama.org vendor data) |
| Bass Extension (-3dB) | 33.8Hz (measured, spinorama.org vendor data) |
| Bluetooth | No |
| Coaxial Input | No |
| Country | Germany |
| Dimensions | 12.6”H x 15.9”W x 5.5”D (319 x 405 x 140 mm) |
| Drivers | 1.75” titanium ring diaphragm compression tweeter with waveguide, 3x 6.5” aluminum cone woofers (1 front, 2 rear firing, cardioid) |
| Enclosure | sealed |
| Frequency Response | 36Hz-20kHz -3dB |
| HDMI Input | No |
| Inputs | XLR (balanced analog), XLR AES/EBU (digital), USB (calibration/control only, not an audio input) |
| Maximum SPL | 112.8dB @ 1m (manufacturer specified) |
| Optical Input | No |
| RCA Input | No |
| TRS Input | No |
| USB Input | No |
| Warranty | 3 years (with registration) |
| Weight | 24.3 lbs (11.0 kg) each |
| XLR Input | Yes |
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