Short answer: the ADAM Audio D3v. It ranks #3 of 48 powered bookshelf speakers by sound quality, rated 4.5/5, at $349.99. The Fluid Audio C35BT ranks #35, rated 3.0/5, at $139, $210.99 cheaper, not enough of a saving to outweigh the sound-quality gap.
The ADAM Audio D3v is the more accurate option. Small desktop monitors with very accurate sound and surprisingly deep bass for their size, plus a simple USB connection. Its measured preference score, a predictor of how neutral it sounds, is 5.37 against 2.57 for the Fluid Audio C35BT. 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.
What the Fluid Audio C35BT does well: An inexpensive desktop pair with Bluetooth, balanced inputs, a front volume knob and a headphone jack for a basic computer setup. It keeps a wired aux input, which the ADAM Audio D3v lacks. The catch: Preference scores of 2.57 standalone and 5.57 with an ideal subwoofer indicate that the limitations are not just missing bass.
Buy the ADAM Audio D3v. It is rated higher for sound quality, and the $210.99 saving on the Fluid Audio C35BT is not enough to make up the difference.
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Measured Differences
- Tonal accuracy above the bass: with a subwoofer taking the low end, the ADAM Audio D3v scores 7.6 against 5.6 for the Fluid Audio C35BT on the Spinorama preference scale. Its frequency response and off-axis sound are smoother, so voices and instruments sound closer to the recording.
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Specifications Side By Side
| ADAM Audio D3v | Fluid Audio C35BT | |
|---|---|---|
| Price | $349.99 per pair | $139.00 per pair |
| Ranked | #3 of 48 in Small Size Powered Bookshelf Speakers | #35 of 48 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 | 7.3H x 4.9W x 5.9D in |
| EQ | Yes (Room adjustment filters) | - |
| Frequency Response | 48Hz - 22.6kHz (-3dB) (Manufacturer specified) | 80Hz - 20kHz (Manufacturer specified) |
| Inputs | USB-C, balanced 1/4-inch TRS | Bluetooth, RCA, 3.5mm, balanced TRS |
| 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) | 0.8” silk-dome tweeter, 3.5” composite woofer |
| Weight | 7.9 lbs (3.58 kg) (pair) | 10 lbs (4.52 kg) pair |
| Amplifier Power | 100W RMS per speaker (70W woofer + 30W tweeter) (Manufacturer specified) | 64W total |
| Maximum SPL | 98dB peak @ 1m (IEC-weighted noise, manufacturer specified) | - |
| Spinorama Preference Score | 5.37 | 2.57 |
| Spinorama Preference Score with Perfect Sub | 7.59 | 5.57 |
| XLR Input | No | No |
| RCA Input | No | Yes |
| TRS Input | Yes | Yes |
| 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 |
| Headphone Output | Yes | Yes |
| Enclosure | - | Powered 2-way, front-ported |
| Bluetooth Version | - | 5.0 |
Where the Ratings Come From
- ADAM Audio D3v: Spinorama.org measurements and reviews by Erin’s Audio Corner and Jasper Tech.
- Fluid Audio C35BT: Spinorama.org measurements.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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