Short answer: the Audioengine HD3, if you are buying new. The Monacor SOUND-4BT ranks higher than it (#22 vs #29 of 48 powered bookshelf speakers, 3.3/5 vs 3.2/5) but is discontinued, so only consider it used; the Audioengine HD3 is still sold new at $359.
The case for the Monacor SOUND-4BT: A compact powered pair with Bluetooth, optical and analog inputs, a remote and a subwoofer output. The tradeoff: Predicted in-room response remains uneven despite the modest midrange span.
The case for the Audioengine HD3: Compact powered desktop speakers with Bluetooth and analog inputs for when space is tight. The catch: Limited bass makes a subwoofer useful for fuller music reproduction.
Buy the Audioengine HD3 if you want one new; the Monacor SOUND-4BT is discontinued, so only look for it used.
Looking for alternatives? See the complete Powered Home rankings.
Prices on this page were last checked November 7, 2026 at 7:34 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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Specifications Side By Side
| Monacor SOUND-4BT | Audioengine HD3 | |
|---|---|---|
| Price | $310 per pair Discontinued | $359.00 per pair |
| Ranked | #22 of 48 in Small Size Powered Bookshelf Speakers | #29 of 48 in Small Size Powered Bookshelf Speakers |
| Enclosure | 2-way powered stereo pair, bass reflex | - |
| Drivers | 1” dome tweeter, 4” woofer | 2.75” woofer, 0.75” silk dome tweeter |
| Dimensions | 8.5H x 5.5W x 6.7D in | 9”H x 5.5”W x 6.5”D (228.6 x 139.7 x 165.1 mm) |
| Weight | 11.5 lbs (5.2 kg)/pair | 7.3 lbs (3.3 kg) |
| Amplifier Power | 2 x 30W RMS | 30W total (15W per speaker) |
| Inputs | Bluetooth 4.0 aptX, optical, RCA, 3.5mm | Bluetooth, Aux, RCA Input |
| Bluetooth Codecs | SBC, aptX | SBC, aptX |
| Spinorama Preference Score | 3.58 | - |
| Spinorama Preference Score with Perfect Sub | 6.10 | - |
| Subwoofer Output | Yes | Yes |
| Outputs | Subwoofer | RCA variable output (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 | 5.0 |
| Frequency Response | 45Hz - 20kHz (Manufacturer specified) | 65 Hz-20 kHz (-3dB) (Manufacturer specified) |
| App | - | No |
| Bass Extension (-10dB) | - | 58Hz |
| Bass Extension (-3dB) | - | 65Hz |
| EQ | - | No |
| Maximum SPL | - | 90dB @ 1m (manufacturer specified) |
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