Short answer: the Monoprice Monolith MM-3, if you are buying new. The Monacor SOUND-4BT ranks higher than it (#22 vs #28 of 48 powered bookshelf speakers, 3.3/5 vs 3.2/5) but is discontinued, so only consider it used; the Monoprice Monolith MM-3 is still sold new at $299.99.
What the Monacor SOUND-4BT does well: A compact powered pair with Bluetooth, optical and analog inputs, a remote and a subwoofer output. The catch: Predicted in-room response remains uneven despite the modest midrange span.
The case for the Monoprice Monolith MM-3: A compact desktop pair with Bluetooth, analog inputs, a headphone jack and angled stands. The tradeoff: Its measurements and rating are for the ports plugged; left stock, the bass has a boomy peak and the midrange has more resonances.
Buy the Monoprice Monolith MM-3, since the Monacor SOUND-4BT is discontinued and only worth hunting down used.
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Specifications Side By Side
| Monacor SOUND-4BT | Monoprice Monolith MM-3 | |
|---|---|---|
| Price | $310 per pair Discontinued | $299.99 per pair |
| Ranked | #22 of 48 in Small Size Powered Bookshelf Speakers | #28 of 48 in Small Size Powered Bookshelf Speakers |
| Enclosure | 2-way powered stereo pair, bass reflex | 2-way active, rear slot port |
| Drivers | 1” dome tweeter, 4” woofer | 0.75” silk-dome tweeter, 3” polypropylene woofer |
| Dimensions | 8.5H x 5.5W x 6.7D in | 8.3H x 5.5W x 6.3D in |
| Weight | 11.5 lbs (5.2 kg)/pair | approx. 7.9 lbs (3.6 kg) each |
| Amplifier Power | 2 x 30W RMS | 50W total, bi-amplified |
| Inputs | Bluetooth 4.0 aptX, optical, RCA, 3.5mm | Bluetooth aptX, RCA, 3.5mm |
| Bluetooth Codecs | SBC, aptX | SBC, aptX |
| Spinorama Preference Score | 3.58 | 3.82 |
| Spinorama Preference Score with Perfect Sub | 6.10 | 6.24 |
| Subwoofer Output | Yes | - |
| Outputs | Subwoofer | - |
| XLR Input | No | No |
| RCA Input | Yes | Yes |
| TRS Input | No | No |
| Optical Input | Yes | No |
| Coaxial Input | No | No |
| USB Input | No | No |
| HDMI Input | No | No |
| AES Input | No | No |
| Aux Input | Yes | Yes |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 4.0 | - |
| Frequency Response | 45Hz - 20kHz (Manufacturer specified) | 50Hz - 22kHz (Manufacturer specified) |
| Country | - | United States (design) |
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