Short answer: the HEDD Type 20 MK2 for better sound quality, the Adam Audio T8V for the lower price. The HEDD Type 20 MK2 ranks #7 of 66 powered bookshelf speakers at $4800. The Adam Audio T8V ranks #28 at $349.99, $4450.01 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 HEDD Type 20 MK2 offers: CEA2034 spinorama shows a nice flat on-axis response with a very smooth directivity index, plus an intentional boost at 40-50Hz for extra bass warmth. Predicted in-room response is nice and smooth. Early reflections integrate very cleanly with the direct sound, rated “very nice” by the reviewer. Distortion at 86dB SPL/1m is very good, staying well below the reviewer’s audibility threshold across the range. Its open-port configuration measures notably lower bass distortion than the same speaker run in closed-port mode. Watch for: Horizontal beamwidth is asymmetric (+60/-80 degrees depending on reference point) and narrows above 10kHz. Vertical directivity means listening position needs to stay at or below the reference axis for accurate tonal balance. At 96dB SPL/1m, distortion rises broadly across the spectrum, exceeding the reviewer’s audibility threshold over a wide frequency range - a notably worse result than at 86dB. Cumulative spectral decay (waterfall) shows resonances lingering in the 500Hz-2kHz region. Switching to closed-port mode increases bass distortion further, so the open-port configuration is preferable.
Buy the Adam Audio T8V if the price matters more than sound quality. Buy the HEDD Type 20 MK2 if sound quality matters more than the price.
Specifications Side By Side
| Adam Audio T8V | HEDD Type 20 MK2 | |
|---|---|---|
| Price | $349.99 | $4800 |
| Ranked | #28 of 66 in Large Size Powered Bookshelf Speakers | #7 of 66 in Large Size Powered Bookshelf Speakers |
| Bass Extension (-3dB) | 45Hz (measured, Audio Science Review) | 32Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | 35Hz (measured, Audio Science Review) | 26Hz (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) | 14.1"H x 11"W x 13.3"D (358.1 x 279.4 x 337.8 mm) |
| Frequency Response | 33Hz - 25kHz (-6dB) (Manufacturer specified) | 32Hz - 40kHz (Manufacturer specified) |
| Inputs | XLR, RCA | XLR (Analog/AES) |
| Weight | 21.6 lbs / 9.8 kg | 34 lbs / 15.4 kg each |
| Drivers | 8" (203mm) woofer | 7" honeycomb composite woofer, 4" honeycomb composite midrange, HEDD AMT (Air Motion Transformer) tweeter |
| App | No | Yes (HEDD CTRL) |
| Bluetooth | No | No |
| EQ | Yes (Room adjustment) | Yes (Desk filter, shelf filters) |
| DSP | No | Yes (96kHz/32-bit) |
| Output Power | 90w Per Speaker | 900W (3x300W) |
| Max SPL | - | 120dB @ 1m (per pair) |
| Outputs | - | XLR (AES pass-through) |
Related Speaker Comparisons
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- Kali Audio LP-6 V2 vs Genelec S360
- Kali Audio LP-8 vs Genelec S360
- Genelec S360 vs Kali Audio LP-6
- Genelec S360 vs Adam Audio T8V
- Kali Audio LP-6 V2 vs HEDD Type 20 MK2
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
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
HEDD Type 20 MK2: $4800 Bhphotovideo eBay
Pros: CEA2034 spinorama shows a nice flat on-axis response with a very smooth directivity index, plus an intentional boost at 40-50Hz for extra bass warmth. Predicted in-room response is nice and smooth. Early reflections integrate very cleanly with the direct sound, rated “very nice” by the reviewer. Distortion at 86dB SPL/1m is very good, staying well below the reviewer’s audibility threshold across the range. Its open-port configuration measures notably lower bass distortion than the same speaker run in closed-port mode.
Cons: Horizontal beamwidth is asymmetric (+60/-80 degrees depending on reference point) and narrows above 10kHz. Vertical directivity means listening position needs to stay at or below the reference axis for accurate tonal balance. At 96dB SPL/1m, distortion rises broadly across the spectrum, exceeding the reviewer’s audibility threshold over a wide frequency range - a notably worse result than at 86dB. Cumulative spectral decay (waterfall) shows resonances lingering in the 500Hz-2kHz region. Switching to closed-port mode increases bass distortion further, so the open-port configuration is preferable.
Full HEDD Type 20 MK2 review and specifications →
| App | Yes (HEDD CTRL) |
|---|---|
| Bass Extension (-10dB) | 26Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 32Hz (measured, Audio Science Review) |
| Bluetooth | No |
| DSP | Yes (96kHz/32-bit) |
| Dimensions | 14.1"H x 11"W x 13.3"D (358.1 x 279.4 x 337.8 mm) |
| Drivers | 7" honeycomb composite woofer, 4" honeycomb composite midrange, HEDD AMT (Air Motion Transformer) tweeter |
| EQ | Yes (Desk filter, shelf filters) |
| Frequency Response | 32Hz - 40kHz (Manufacturer specified) |
| Inputs | XLR (Analog/AES) |
| Max SPL | 120dB @ 1m (per pair) |
| Output Power | 900W (3x300W) |
| Outputs | XLR (AES pass-through) |
| Weight | 34 lbs / 15.4 kg each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons