Short answer: the Audioengine A2+. It ranks #10 of 22 powered bookshelf speakers by sound quality at $279; the Monacor SOUND-4BT ranks #11 and costs $310, so there is not much of a tradeoff to weigh.
What the Monacor SOUND-4BT offers: The available measurements suggest useful bass for its size, with a -3dB point around 61Hz, and a fairly small 2.8dB response span from 300Hz to 5kHz. Optical and analog inputs, Bluetooth, remote control and a subwoofer output make it versatile for a compact stereo setup. Watch for: Predicted in-room response remains uneven despite the modest midrange span. A subwoofer can add bass reach but does not correct the remaining tonal variations.
What the Audioengine A2+ offers: Erin’s Klippel measurements give a 5.39 predicted preference score with an ideal subwoofer. The tiny footprint, multiple inputs and variable RCA output are useful for desktop listening. The existing review found desk placement more forgiving than free-space placement, with no major port-chuffing problem in its tests. Watch for: The 2.07 standalone score and roughly 106Hz measured -3dB point reveal how much bass is missing without reinforcement or a subwoofer. Midrange and crossover-region dips remain; desk gain is placement-dependent and cannot be assumed to correct them. Compression becomes substantial above roughly 87dB at 1m in the review, so this is a quiet nearfield option rather than a high-output monitor.
Buy the Audioengine A2+. It ranks higher for sound quality than the Monacor SOUND-4BT and costs less, so there is no real case for the other one.
Specifications Side By Side
| Monacor SOUND-4BT | Audioengine A2+ | |
|---|---|---|
| Price | $310/pair | $279.00 |
| Ranked | #11 of 22 in Small Size Powered Bookshelf Speakers | #10 of 22 in Small Size Powered Bookshelf Speakers |
| Enclosure | 2-way powered stereo pair, bass reflex | - |
| Drivers | 1" dome tweeter, 4" woofer | 0.75" silk dome tweeter, 2.75" fiber woofer |
| Dimensions | 8.5H x 5.5W x 6.7D in | 6"H x 4"W x 5.25"D (152 x 102 x 133mm) |
| Weight | 11.5 lbs/pair | 3.5 lbs / 1.6 kg (3.55 lb) left / 3.1 lbs / 1.4 kg (3.15 lb) right |
| Power Output | 2 x 30W RMS | - |
| Inputs | Bluetooth 4.0 aptX, optical, RCA, 3.5mm; sub out | RCA, 3.5mm, USB, Bluetooth 5.0 |
| Bluetooth Codecs | SBC, aptX | - |
| Output Power | - | 15W RMS / 30W peak per channel |
| Frequency Response | - | 65Hz - 22kHz (+-2dB, Manufacturer specified) |
| Bass Extension (-3dB) | - | 105.5Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | - | 58.9Hz (measured, Erin’s Audio Corner) |
| Bluetooth Version | - | 5.0 |
| EQ | - | No (fixed volume knob only) |
| App | - | No |
Related Speaker Comparisons
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- Bowers & Wilkins Formation Flex vs Fostex PM0.3
- Monoprice Monolith MM-3 vs Klipsch ProMedia Lumina
- Klipsch ProMedia Lumina vs Fiio SP3
- Audioengine A2+ vs Klipsch ProMedia Lumina
- Audioengine A2+ vs Fiio SP3
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The Two Speakers In Full
Monacor SOUND-4BT: $310/pair LTT Versand eBay
Pros: The available measurements suggest useful bass for its size, with a -3dB point around 61Hz, and a fairly small 2.8dB response span from 300Hz to 5kHz. Optical and analog inputs, Bluetooth, remote control and a subwoofer output make it versatile for a compact stereo setup.
Cons: Predicted in-room response remains uneven despite the modest midrange span. A subwoofer can add bass reach but does not correct the remaining tonal variations.
Full Monacor SOUND-4BT review and specifications →
| Bluetooth Codecs | SBC, aptX |
|---|---|
| Dimensions | 8.5H x 5.5W x 6.7D in |
| Drivers | 1" dome tweeter, 4" woofer |
| Enclosure | 2-way powered stereo pair, bass reflex |
| Inputs | Bluetooth 4.0 aptX, optical, RCA, 3.5mm; sub out |
| Power Output | 2 x 30W RMS |
| Weight | 11.5 lbs/pair |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Audioengine A2+: $279.00 Amazon Audioengine eBay
Pros: Erin’s Klippel measurements give a 5.39 predicted preference score with an ideal subwoofer. The tiny footprint, multiple inputs and variable RCA output are useful for desktop listening. The existing review found desk placement more forgiving than free-space placement, with no major port-chuffing problem in its tests.
Cons: The 2.07 standalone score and roughly 106Hz measured -3dB point reveal how much bass is missing without reinforcement or a subwoofer. Midrange and crossover-region dips remain; desk gain is placement-dependent and cannot be assumed to correct them. Compression becomes substantial above roughly 87dB at 1m in the review, so this is a quiet nearfield option rather than a high-output monitor.
Full Audioengine A2+ review and specifications →
| App | No |
|---|---|
| Bass Extension (-10dB) | 58.9Hz (measured, Erin's Audio Corner) |
| Bass Extension (-3dB) | 105.5Hz (measured, Erin's Audio Corner) |
| Bluetooth Version | 5.0 |
| Dimensions | 6"H x 4"W x 5.25"D (152 x 102 x 133mm) |
| Drivers | 0.75" silk dome tweeter, 2.75" fiber woofer |
| EQ | No (fixed volume knob only) |
| Frequency Response | 65Hz - 22kHz (+-2dB, Manufacturer specified) |
| Inputs | RCA, 3.5mm, USB, Bluetooth 5.0 |
| Output Power | 15W RMS / 30W peak per channel |
| Weight | 3.5 lbs / 1.6 kg (3.55 lb) left / 3.1 lbs / 1.4 kg (3.15 lb) right |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Audioengine A2+ vs Klipsch ProMedia Lumina
- Audioengine A2+ vs Edifier MR3
- Audioengine A2+ vs Edifier M60
- Audioengine A2+ vs Mackie CR3-X
- Audioengine A2+ vs IK Multimedia iLoud Micro Monitor
- Audioengine A2+ vs Adam Audio D3v
- Audioengine A2+ vs Fiio SP3
- Audioengine A2+ vs Genelec 8010A
- See all 9 comparisons