Short answer: the Dayton Audio M4. It ranks #28 of 64 powered bookshelf speakers by sound quality at $249.98; the Audioengine A5+ Classic ranks #38 and costs $399, so there is not much of a tradeoff to weigh.
What the Audioengine A5+ Classic offers: CEA2034 spinorama shows a reasonably flat response outside of the upper bass. Internal Class AB amplification (50W RMS, 75W peak) with a linear power supply drives a 5” Kevlar woofer and 0.75” tweeter. Watch for: A valley in the upper bass (200-400Hz) recesses that range, and a distortion peak shows up around 800-900Hz even at 86dB SPL. Off-axis response doesn’t track the on-axis curve well through the crossover, suggesting the waveguide isn’t fully optimized. Resonances appear at 900Hz and 4.4kHz.
What the Dayton Audio M4 offers: Good build quality. Has a subwoofer output for extending the low end. Overall linearity is decent for the price. Avoids sibilance since it’s slightly recessed right in the harsh 4-8kHz region. Watch for: The amplifier is only in the left speaker, so it’s not separate amps in each unit. Bass doesn’t extend very deep, and unlike some rivals it doesn’t use DSP to boost the low end. Sounds noticeably different up close versus at a normal listening distance, with a softer treble near field and a more recessed upper midrange farther away. Limited output headroom - distortion rises sharply above about 93dB, so it’s better suited to near-field or desktop use than as a far-field living-room speaker.
Buy the Dayton Audio M4. It ranks higher for sound quality than the Audioengine A5+ Classic and costs less, so there is no real case for the other one.
Specifications Side By Side
| Audioengine A5+ Classic | Dayton Audio M4 | |
|---|---|---|
| Price | $399.00 | $249.98 |
| Ranked | #38 of 64 in Medium Size Powered Bookshelf Speakers | #28 of 64 in Medium Size Powered Bookshelf Speakers |
| Bass Extension (-3dB) | 68Hz (measured, Audio Science Review) | 121Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 50Hz (measured, Audio Science Review) | 60Hz (measured, Erin’s Audio Corner) |
| Dimensions | 10.9"H x 7.2"W x 9.7"D (276.2 x 182.6 x 247.6 mm) | 5" x 6.5" x 9.5" (127 x 165 x 241 mm) (W x D x H) |
| Frequency Response | 50Hz - 22kHz (+/-1.5dB) (Manufacturer specified) | 40Hz - 20kHz (Manufacturer specified) |
| Weight | 15.4 lbs / 7 kg (left/powered), 9.7 lbs / 4.4 kg (right) | 6.2 lbs / 2.81 kg (active), 5.1 lbs / 2.31 kg (passive) |
| Drivers | 5" Kevlar woofer, 0.75" silk dome tweeter | 4" aluminum woofer, 1" silk dome tweeter |
| App | No | No |
| EQ | No | - |
| DSP | No | - |
| Output Power | 50W RMS / 75W peak | 75W RMS (150W peak) |
| Bluetooth Version | - | 5.0 |
| Bluetooth Codecs | - | SBC, aptX |
| Digital Aux Input | - | Yes (USB-C DAC, up to 192kHz/32-bit) |
| Aux Input | - | Yes (RCA) |
| Stereo | - | Yes |
| Power Input | - | AC Power cord |
| Subwoofer Output | - | Yes (20Hz - 200Hz) |
| Discontinued | - | No |
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Prices on this page were last checked August 25, 2026 at 6:19 AM 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
Audioengine A5+ Classic: $399.00 Amazon Bhphotovideo eBay
Pros: CEA2034 spinorama shows a reasonably flat response outside of the upper bass. Internal Class AB amplification (50W RMS, 75W peak) with a linear power supply drives a 5” Kevlar woofer and 0.75” tweeter.
Cons: A valley in the upper bass (200-400Hz) recesses that range, and a distortion peak shows up around 800-900Hz even at 86dB SPL. Off-axis response doesn’t track the on-axis curve well through the crossover, suggesting the waveguide isn’t fully optimized. Resonances appear at 900Hz and 4.4kHz.
Full Audioengine A5+ Classic review and specifications →
| App | No |
|---|---|
| Bass Extension (-10dB) | 50Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 68Hz (measured, Audio Science Review) |
| DSP | No |
| Dimensions | 10.9"H x 7.2"W x 9.7"D (276.2 x 182.6 x 247.6 mm) |
| Drivers | 5" Kevlar woofer, 0.75" silk dome tweeter |
| EQ | No |
| Frequency Response | 50Hz - 22kHz (+/-1.5dB) (Manufacturer specified) |
| Output Power | 50W RMS / 75W peak |
| Weight | 15.4 lbs / 7 kg (left/powered), 9.7 lbs / 4.4 kg (right) |
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Dayton Audio M4: $249.98 Parts Express eBay
Pros: Good build quality. Has a subwoofer output for extending the low end. Overall linearity is decent for the price. Avoids sibilance since it’s slightly recessed right in the harsh 4-8kHz region.
Cons: The amplifier is only in the left speaker, so it’s not separate amps in each unit. Bass doesn’t extend very deep, and unlike some rivals it doesn’t use DSP to boost the low end. Sounds noticeably different up close versus at a normal listening distance, with a softer treble near field and a more recessed upper midrange farther away. Limited output headroom - distortion rises sharply above about 93dB, so it’s better suited to near-field or desktop use than as a far-field living-room speaker.
Full Dayton Audio M4 review and specifications →
| App | No |
|---|---|
| Aux Input | Yes (RCA) |
| Bass Extension (-10dB) | 60Hz (measured, Erin's Audio Corner) |
| Bass Extension (-3dB) | 121Hz (measured, Erin's Audio Corner) |
| Bluetooth Codecs | SBC, aptX |
| Bluetooth Version | 5.0 |
| Digital Aux Input | Yes (USB-C DAC, up to 192kHz/32-bit) |
| Dimensions | 5" x 6.5" x 9.5" (127 x 165 x 241 mm) (W x D x H) |
| Discontinued | No |
| Drivers | 4" aluminum woofer, 1" silk dome tweeter |
| Frequency Response | 40Hz - 20kHz (Manufacturer specified) |
| Output Power | 75W RMS (150W peak) |
| Power Input | AC Power cord |
| Stereo | Yes |
| Subwoofer Output | Yes (20Hz - 200Hz) |
| Weight | 6.2 lbs / 2.81 kg (active), 5.1 lbs / 2.31 kg (passive) |
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- Reviews, Comparisons and Sound Samples
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