Short answer: the Genelec 8351B for better sound quality, the Adam Audio T8V for the lower price. The Genelec 8351B ranks #6 of 62 powered bookshelf speakers at $9150. The Adam Audio T8V ranks #28 at $349.99, $8800.01 cheaper.
What the Adam Audio T8V offers: Quite balanced and neutral, very close to the Yamaha HS8. Deeper bass than the HS8 Watch for: A crossover-region notch around 4.6kHz where tweeter and woofer interact, and a hole in the vertical response below the tweeter axis - keep the tweeter at or above ear height. Distortion is well controlled at 86dB SPL but gets messier at 96dB.
What the Genelec 8351B offers: CEA2034 spinorama shows exceptionally flat response both on- and off-axis. Predicted in-room response is “as good as it gets” - should sound very neutral in nearly any room. Horizontal beamwidth of about ±50 degrees is described by the reviewer as exceptionally smooth, a model example of well-executed directivity control. Vertical directivity is nearly as good as horizontal, a benefit of its coaxial driver design that’s rare among non-coaxial monitors. Distortion at 86dB SPL/1m is remarkably low - the reviewer says it’s “better than many headphones.” Watch for: Deep bass distortion rises substantially at higher output (96dB SPL/1m) - the reviewer notes “deep bass suffers” below about 100Hz. A distortion spike also appears near 8-10kHz at that same higher output level. Cumulative spectral decay (waterfall) measurements show resonances around 1-2kHz. Very expensive.
Buy the Adam Audio T8V if the price matters more than sound quality. Buy the Genelec 8351B if sound quality matters more than the price.
Specifications Side By Side
| Adam Audio T8V | Genelec 8351B | |
|---|---|---|
| Price | $349.99 | $9150 |
| Ranked | #28 of 62 in Large Size Powered Bookshelf Speakers | #6 of 62 in Large Size Powered Bookshelf Speakers |
| Bass Extension (-3dB) | 45Hz (measured, Audio Science Review) | 33Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | 35Hz (measured, Audio Science Review) | 28Hz (measured, Audio Science Review) |
| Dimensions | 15.8"H x 9.8"W x 13.2"D (401.3 x 248.9 x 335.3 mm) | 17"H x 11.3"W x 10.9"D (431.8 x 287 x 276.9 mm) |
| Frequency Response | 33Hz - 25kHz (-6dB) (Manufacturer specified) | 32Hz - 40kHz (±1.5dB) (Manufacturer specified) |
| Inputs | XLR, RCA | XLR |
| Weight | 21.6 lbs / 9.8 kg | 31.1 lbs / 14.1 kg each |
| Drivers | 8" (203mm) woofer | 8.6" woofer, 5" coaxial with tweeter midrange, 0.75" (19mm) coaxial tweeter |
| App | No | Yes (GLM) |
| Bluetooth | No | No |
| EQ | Yes (Room adjustment) | Yes (via GLM software) |
| DSP | No | Yes |
| Output Power | 90w Per Speaker | 550w Per Speaker |
| Max SPL | - | 113dB @ 1m |
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- Genelec 8351B vs Kali Audio LP-6 V2
- Genelec 8351B vs Focal Alpha 65 EVO
Prices on this page were last checked August 24, 2026 at 6:53 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
Adam Audio T8V: $349.99 Amazon eBay
Pros: Quite balanced and neutral, very close to the Yamaha HS8. Deeper bass than the HS8
Cons: A crossover-region notch around 4.6kHz where tweeter and woofer interact, and a hole in the vertical response below the tweeter axis - keep the tweeter at or above ear height. Distortion is well controlled at 86dB SPL but gets messier at 96dB.
Full Adam Audio T8V review and specifications →
| App | No |
|---|---|
| Bass Extension (-10dB) | 35Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 45Hz (measured, Audio Science Review) |
| Bluetooth | No |
| DSP | No |
| Dimensions | 15.8"H x 9.8"W x 13.2"D (401.3 x 248.9 x 335.3 mm) |
| Drivers | 8" (203mm) woofer |
| EQ | Yes (Room adjustment) |
| Frequency Response | 33Hz - 25kHz (-6dB) (Manufacturer specified) |
| Inputs | XLR, RCA |
| Output Power | 90w Per Speaker |
| Weight | 21.6 lbs / 9.8 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Sercan Solmaz: Adam Audio T8V vs Yamaha HS8 vs KRK Rokit 8 (STUDIO SPEAKER SOUND TEST)
- DSAUDIO.review: Adam Audio T8V vs KRK Rokit 8 G4 Sound & Frequency Response Comparison More from DSAUDIOreview →
- Audio Science Review Measurements (spinorama.org)
- Reddit Search for Adam Audio T8V Review
- Head-to-Head Comparisons
Genelec 8351B: $9150 Bhphotovideo eBay
Pros: CEA2034 spinorama shows exceptionally flat response both on- and off-axis. Predicted in-room response is “as good as it gets” - should sound very neutral in nearly any room. Horizontal beamwidth of about ±50 degrees is described by the reviewer as exceptionally smooth, a model example of well-executed directivity control. Vertical directivity is nearly as good as horizontal, a benefit of its coaxial driver design that’s rare among non-coaxial monitors. Distortion at 86dB SPL/1m is remarkably low - the reviewer says it’s “better than many headphones.”
Cons: Deep bass distortion rises substantially at higher output (96dB SPL/1m) - the reviewer notes “deep bass suffers” below about 100Hz. A distortion spike also appears near 8-10kHz at that same higher output level. Cumulative spectral decay (waterfall) measurements show resonances around 1-2kHz. Very expensive.
Full Genelec 8351B review and specifications →
| App | Yes (GLM) |
|---|---|
| Bass Extension (-10dB) | 28Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 33Hz (measured, Audio Science Review) |
| Bluetooth | No |
| DSP | Yes |
| Dimensions | 17"H x 11.3"W x 10.9"D (431.8 x 287 x 276.9 mm) |
| Drivers | 8.6" woofer, 5" coaxial with tweeter midrange, 0.75" (19mm) coaxial tweeter |
| EQ | Yes (via GLM software) |
| Frequency Response | 32Hz - 40kHz (±1.5dB) (Manufacturer specified) |
| Inputs | XLR |
| Max SPL | 113dB @ 1m |
| Output Power | 550w Per Speaker |
| Weight | 31.1 lbs / 14.1 kg each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons