Short answer: the Yamaha HS8. It ranks #15 of 66 powered bookshelf speakers by sound quality at $678.28; the GGNTKT M1 ranks #33 and costs $7500, so there is not much of a tradeoff to weigh.
What the Yamaha HS8 offers: ASR’s Klippel measurements show a notably neutral predicted in-room response, smooth horizontal directivity, and strong bass extension for a studio monitor: about 44Hz at -3dB and 35Hz at -10dB. Its Spinorama preference score rises from 4.95 full-range to 6.68 with a subwoofer, and the rear room-control switches provide some placement adjustment. Watch for: There is still some midrange unevenness and the vertical listening window is much narrower than the horizontal one, so ear height matters. The rear port and cabinet depth complicate close-wall placement, there is no DSP or automatic room correction, and the price is per speaker rather than per pair.
What the GGNTKT M1 offers: One front and two rear firing 6.5 inch aluminum woofers cancel each other’s rearward radiation for genuine cardioid bass control, confirmed by a sound power directivity index that climbs steadily through the midrange rather than the erratic pattern typical of non cardioid designs. Listening window smoothness measures 0.67, among the best of any speaker added to this catalog from spinorama.org’s measurement set, and the measured extension reaches 33.8Hz, deeper than most speakers in this class. Watch for: On axis deviation measures a comparatively rough 0.475dB average despite the excellent listening window smoothness, meaning a listener sitting dead center may notice more unevenness than the off axis figures suggest. At £7,500/pair it is one of the most expensive speakers in this catalog, sold through a single UK dealer with no direct online checkout. The electronics live in a separate outboard enclosure connected by cable rather than being built into the cabinet, adding setup complexity most active monitors avoid.
Buy the Yamaha HS8. It ranks higher for sound quality than the GGNTKT M1 and costs less, so there is no real case for the other one.
Specifications Side By Side
| Yamaha HS8 | GGNTKT M1 | |
|---|---|---|
| Price | $678.28 | 7500 GBP/pair |
| Ranked | #15 of 66 in Large Size Powered Bookshelf Speakers | #33 of 66 in Large Size Powered Bookshelf Speakers |
| Dimensions | 15.4"H x 9.8"W x 13.1"D (391.2 x 248.9 x 332.7 mm) | 12.6"H x 15.9"W x 5.5"D (319 x 405 x 140 mm) (12.6 x 15.9 x 5.5 in) |
| Frequency Response | 47Hz - 24kHz (-3dB) (Manufacturer specified) | 36Hz-20kHz -3dB |
| Bass Extension (-3dB) | 43.9Hz (measured, Audio Science Review) | 33.8Hz (measured, spinorama.org vendor data) |
| Bass Extension (-10dB) | 34.7Hz (measured, Audio Science Review) | 28.2Hz (measured, spinorama.org vendor data) |
| Inputs | XLR | - |
| Weight | 22.5 lbs / 10.2 kg | 24.3 lbs / 11.0 kg (24 lbs) each |
| Drivers | 8" woofer, 1" dome tweeter | 1.75" titanium ring diaphragm compression tweeter with waveguide, 3x 6.5" aluminum cone woofers (1 front, 2 rear firing, cardioid) |
| App | No | - |
| Bluetooth | No | - |
| EQ | Yes (Room adjustment) | - |
| DSP | No | - |
| Output Power | 120w Per Speaker | - |
| Enclosure | - | sealed |
| Power Output (Watts) | - | 560W total (70W tweeter, 210W woofers per channel, Class D) |
| Max SPL | - | 112.8dB @ 1m |
| Warranty | - | 3 years (with registration) |
| Country | - | Germany |
Related Speaker Comparisons
More useful head-to-heads from the same speaker class:
- Neumann KH 150 vs JBL 4329P
- Neumann KH 150 vs Neumann KH 310 A
- JBL 4305P vs Genelec 8341A
- GGNTKT M1 vs Palmer Orbit 11
- Yamaha HS8 vs Genelec 8341A
Prices on this page were last checked August 25, 2026 at 6:19 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
Yamaha HS8: $678.28 Amazon eBay
Pros: ASR’s Klippel measurements show a notably neutral predicted in-room response, smooth horizontal directivity, and strong bass extension for a studio monitor: about 44Hz at -3dB and 35Hz at -10dB. Its Spinorama preference score rises from 4.95 full-range to 6.68 with a subwoofer, and the rear room-control switches provide some placement adjustment.
Cons: There is still some midrange unevenness and the vertical listening window is much narrower than the horizontal one, so ear height matters. The rear port and cabinet depth complicate close-wall placement, there is no DSP or automatic room correction, and the price is per speaker rather than per pair.
Full Yamaha HS8 review and specifications →
| App | No |
|---|---|
| Bass Extension (-10dB) | 34.7Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 43.9Hz (measured, Audio Science Review) |
| Bluetooth | No |
| DSP | No |
| Dimensions | 15.4"H x 9.8"W x 13.1"D (391.2 x 248.9 x 332.7 mm) |
| Drivers | 8" woofer, 1" dome tweeter |
| EQ | Yes (Room adjustment) |
| Frequency Response | 47Hz - 24kHz (-3dB) (Manufacturer specified) |
| Inputs | XLR |
| Output Power | 120w Per Speaker |
| Weight | 22.5 lbs / 10.2 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Audio Science Review: Yamaha HS8 Studio Monitor Review More from Audio Science Review →
- Sercan Solmaz: Adam Audio T8V vs Yamaha HS8 vs KRK Rokit 8 (STUDIO SPEAKER SOUND TEST)
- DSAUDIO.review: DSAUDIO.review Edifier R2850DB vs Yamaha HS8 sound.DEMO More from DSAUDIOreview →
- DSAUDIO.review: DSAUDIO.review Adam Audio A7X vs Yamaha HS8 sound.DEMO
- DSAUDIO.review: Yamaha HS7 vs Yamaha HS8 Sound & Frequency Response Comparison
- DSAUDIO.review: Yamaha HS8 vs Yamaha HS5 Sound & Frequency Response Comparison
- DSAUDIO.review: Genelec 8020D vs Yamaha HS8 Sound & Frequency Response Comparison
- DSAUDIO.review: DSAUDIO.review APS Klasik 2020 vs Yamaha HS8 sound.DEMO
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- DSAUDIO.review: Yamaha HS8 vs PreSonus Eris E8 XT Sound & Frequency Response Comparison
- DSAUDIO.review: Yamaha HS8 vs Kali Audio LP-8 Sound & Frequency Response Comparison
- DSAUDIO.review: KRK Rokit 8 G4 RP8G4 vs Yamaha HS8 Sound & Frequency Response Comparison
- DSAUDIO.review: Neumann KH80 DSP vs Yamaha HS8 Sound & Frequency Response Comparison
- DSAUDIO.review: Yamaha HS8 vs IK Multimedia iLoud MTM Sound & Frequency Response Comparison
- Audio Science Review Measurements (spinorama.org)
- Reddit Search for Yamaha HS8 Review
- Head-to-Head Comparisons
GGNTKT M1: 7500 GBP/pair Purite Audio (UK) eBay
Pros: One front and two rear firing 6.5 inch aluminum woofers cancel each other’s rearward radiation for genuine cardioid bass control, confirmed by a sound power directivity index that climbs steadily through the midrange rather than the erratic pattern typical of non cardioid designs. Listening window smoothness measures 0.67, among the best of any speaker added to this catalog from spinorama.org’s measurement set, and the measured extension reaches 33.8Hz, deeper than most speakers in this class.
Cons: On axis deviation measures a comparatively rough 0.475dB average despite the excellent listening window smoothness, meaning a listener sitting dead center may notice more unevenness than the off axis figures suggest. At £7,500/pair it is one of the most expensive speakers in this catalog, sold through a single UK dealer with no direct online checkout. The electronics live in a separate outboard enclosure connected by cable rather than being built into the cabinet, adding setup complexity most active monitors avoid.
Full GGNTKT M1 review and specifications →
| Bass Extension (-10dB) | 28.2Hz (measured, spinorama.org vendor data) |
|---|---|
| Bass Extension (-3dB) | 33.8Hz (measured, spinorama.org vendor data) |
| Country | Germany |
| Dimensions | 12.6"H x 15.9"W x 5.5"D (319 x 405 x 140 mm) (12.6 x 15.9 x 5.5 in) |
| 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 |
| Max SPL | 112.8dB @ 1m |
| Power Output (Watts) | 560W total (70W tweeter, 210W woofers per channel, Class D) |
| Warranty | 3 years (with registration) |
| Weight | 24.3 lbs / 11.0 kg (24 lbs) each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons