Short answer: the Adam Audio D3v. It ranks #3 of 24 powered bookshelf speakers by sound quality, rated 4.5/5, at $344.99. The Monoprice Monolith MM-3 ranks #16, rated 3.2/5, at $299.99, $45 cheaper, not enough of a saving to outweigh the sound-quality gap.
Why pick the Adam Audio D3v: Excellent midrange linearity for a tiny desktop speaker: Erin’s Klippel data spans just 1.7dB from 300Hz to 5kHz. Watch for: A rising upper-frequency balance and vertical crossover interference keep it from being uniformly neutral at every angle; aim the tweeters toward ear height.
The case for the Monoprice Monolith MM-3: With the ports plugged, Erin’s Klippel data yields preference scores of 3.82 standalone and 6.24 with an ideal subwoofer, and a measured -3dB point around 62Hz. The tradeoff: These measurements describe modified, port-plugged speakers, not the stock product.
Buy the Adam Audio D3v. It is rated higher for sound quality, and saving $45 with the Monoprice Monolith MM-3 does not make up for the sound-quality gap.
Still deciding? The full Powered Home rankings cover every ranked option.
Specifications Side By Side
| Adam Audio D3v | Monoprice Monolith MM-3 | |
|---|---|---|
| Price | $344.99 per pair | $299.99 per pair |
| Ranked | #3 of 24 in Small Size Powered Bookshelf Speakers | #16 of 24 in Small Size Powered Bookshelf Speakers |
| Bass Extension (-10dB) | 45Hz (measured, Erin’s Audio Corner) | - |
| Bass Extension (-3dB) | 50Hz (measured, Erin’s Audio Corner) | - |
| App | No | - |
| Bluetooth | No | Yes |
| Dimensions | 200H (240H on included stand) x 115W x 150D mm | 8.3H x 5.5W x 6.3D in |
| EQ | Yes (Room adjustment filters) | - |
| Frequency Response | 48Hz - 22.6kHz (-3dB) (Manufacturer specified) | 50Hz - 22kHz (Manufacturer specified) |
| Inputs | USB-C, balanced 1/4-inch TRS | Bluetooth aptX, RCA, 3.5mm |
| Sensitivity | 86.5dB (measured at 0.3V/1m, Erin’s Audio Corner) | - |
| Drivers | 3.5” aluminium woofer, D-ART folded ribbon tweeter, 2 x 3.5” passive radiators (each) | 0.75” silk-dome tweeter, 3” polypropylene woofer |
| Weight | 7.9 lbs (3.58 kg) (pair) | approx. 7.9 lbs (3.6 kg) each |
| Amplifier Power | 100W RMS per speaker (70W woofer + 30W tweeter) (Manufacturer specified) | 50W total, bi-amplified |
| Maximum SPL | 98dB peak @ 1m (IEC-weighted noise, manufacturer specified) | - |
| Spinorama Preference Score | 5.37 | 3.82 |
| Spinorama Preference Score with Perfect Sub | 7.59 | 6.24 |
| XLR Input | No | No |
| RCA Input | No | Yes |
| TRS Input | Yes | No |
| Optical Input | No | No |
| Coaxial Input | No | No |
| USB Input | Yes | No |
| HDMI Input | No | No |
| AES Input | No | No |
| Aux Input | No | Yes |
| Outputs | 3.5mm headphone | - |
| Headphone Output | Yes | - |
| Enclosure | - | 2-way active, rear slot port |
| Bluetooth Codecs | - | SBC, aptX |
| Country | - | United States (design) |
Related Speaker Comparisons
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- Adam Audio D3v vs IK Multimedia iLoud Micro Monitor
- Adam Audio D3v vs Edifier M60
Prices on this page were last checked September 30, 2026 at 2:57 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
Adam Audio D3v: $344.99 per pair Amazon eBay
Pros: Excellent midrange linearity for a tiny desktop speaker: Erin’s Klippel data spans just 1.7dB from 300Hz to 5kHz. Side passive radiators help bass reach -3dB at about 51Hz, substantially deeper than the Genelec 8010A or Audio Smile LBM. Predicted preference scores of 5.37 standalone and 7.59 with an ideal subwoofer support it as a particularly useful compact system without a sub. USB-C, analog inputs and placement filters simplify desk setup. Measured bass extension of 50Hz (-3dB), with a measured sensitivity of 86.5dB.
Cons: A rising upper-frequency balance and vertical crossover interference keep it from being uniformly neutral at every angle; aim the tweeters toward ear height. The limiter reduces bass and midrange output as volume rises, with the existing review’s compression tests putting usable maximum output around 89-90dB at 1m. Deep bass at moderate volume should not be confused with high output capability.
Full Adam Audio D3v review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 100W RMS per speaker (70W woofer + 30W tweeter) (Manufacturer specified) |
| App | No |
| Aux Input | No |
| Bass Extension (-10dB) | 45Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 50Hz (measured, Erin’s Audio Corner) |
| Bluetooth | No |
| Coaxial Input | No |
| Dimensions | 200H (240H on included stand) x 115W x 150D mm |
| Drivers | 3.5” aluminium woofer, D-ART folded ribbon tweeter, 2 x 3.5” passive radiators (each) |
| EQ | Yes (Room adjustment filters) |
| Frequency Response | 48Hz - 22.6kHz (-3dB) (Manufacturer specified) |
| HDMI Input | No |
| Headphone Output | Yes |
| Inputs | USB-C, balanced 1/4-inch TRS |
| Maximum SPL | 98dB peak @ 1m (IEC-weighted noise, manufacturer specified) |
| Optical Input | No |
| Outputs | 3.5mm headphone |
| RCA Input | No |
| Sensitivity | 86.5dB (measured at 0.3V/1m, Erin’s Audio Corner) |
| Spinorama Preference Score | 5.37 |
| Spinorama Preference Score with Perfect Sub | 7.59 |
| TRS Input | Yes |
| USB Input | Yes |
| Weight | 7.9 lbs (3.58 kg) (pair) |
| XLR Input | No |
- Links
- Reviews, Comparisons and Sound Samples
- Erin’s Audio Corner: ADAM Audio D3V: Mighty Small But Mighty Awesome Desktop Speaker More from Erin’s Audio Corner →
- Erin’s Audio Review Adam Audio D3v
- Erin’s Audio Corner Measurements (spinorama.org)
- Jasper Tech: Best Desktop Computer Speakers for Every Budget – 2026 More from Jasper Tech →
- Jasper Tech: Are the D3V The Best Studio Monitors For The Money?
- Erin’s Audio Corner: The Best Budget Desktop Speakers, Tested & Rated
- Head-to-Head Comparisons
- Adam Audio D3v vs Genelec 8010A
- Adam Audio D3v vs Cambridge Audio L/R S
- Adam Audio D3v vs IK Multimedia iLoud Micro Monitor
- Adam Audio D3v vs Audio Smile Little British Monitor
- Adam Audio D3v vs Edifier M60
- Adam Audio D3v vs HiVi Swan X3
- Adam Audio D3v vs Edifier MR3
- Adam Audio D3v vs Sovox MiniMax3
- See all 20 comparisons
Monoprice Monolith MM-3: $299.99 per pair Monoprice eBay
Pros: With the ports plugged, Erin’s Klippel data yields preference scores of 3.82 standalone and 6.24 with an ideal subwoofer, and a measured -3dB point around 62Hz. The reviewer found blocking the ports improved the bass peak and midrange resonances. Bluetooth, analog inputs, a headphone jack and angled stands provide a convenient compact desktop package.
Cons: These measurements describe modified, port-plugged speakers, not the stock product. Even in that configuration the review identifies substantial tonal problems and recommends off-axis placement to reduce excess treble. The score therefore does not justify ranking the stock MM-3 alongside better-balanced monitors. Small drivers limit its application, and the proprietary inter-speaker cable complicates replacement.
Full Monoprice Monolith MM-3 review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 50W total, bi-amplified |
| Aux Input | Yes |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, aptX |
| Coaxial Input | No |
| Country | United States (design) |
| Dimensions | 8.3H x 5.5W x 6.3D in |
| Drivers | 0.75” silk-dome tweeter, 3” polypropylene woofer |
| Enclosure | 2-way active, rear slot port |
| Frequency Response | 50Hz - 22kHz (Manufacturer specified) |
| HDMI Input | No |
| Inputs | Bluetooth aptX, RCA, 3.5mm |
| Optical Input | No |
| RCA Input | Yes |
| Spinorama Preference Score | 3.82 |
| Spinorama Preference Score with Perfect Sub | 6.24 |
| TRS Input | No |
| USB Input | No |
| Weight | approx. 7.9 lbs (3.6 kg) each |
| XLR Input | No |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Monoprice Monolith MM-3 vs Klipsch ProMedia Lumina
- Monoprice Monolith MM-3 vs Audioengine HD3
- Monoprice Monolith MM-3 vs Kanto YU4
- Monoprice Monolith MM-3 vs Monacor SOUND-4BT
- Monoprice Monolith MM-3 vs Fluid Audio C35BT
- Monoprice Monolith MM-3 vs Audioengine A2+
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- See all 12 comparisons