Short answer: the JBL 305P MKII. It ranks #17 of 100 powered bookshelf speakers by sound quality, rated 4.3/5, at $289. The Dayton Audio M4 ranks #52, rated 3.8/5, at $249.98, $39.02 cheaper, a saving that is not big enough to make up the sound-quality gap.
The JBL 305P MKII is the better-sounding, deeper-bass choice. Erin’s Klippel data gives 5.38 standalone and 7.52 with an ideal subwoofer, with bass reaching -3dB around 51Hz. Its bass reaches about 50Hz before falling 3dB, against 121Hz for the Dayton Audio M4. The tradeoff: The 3.3dB midrange span and rising response show it is not perfectly neutral.
Why pick the Dayton Audio M4: A compact powered pair with a subwoofer output, useful source connections and a solid cabinet. It keeps a wired aux input, which the JBL 305P MKII lacks. The catch: Existing listening and output notes describe limited bass, a balance that changes with distance, and distortion rising above roughly 93dB.
Buy the JBL 305P MKII. It is rated higher for sound quality, and the $39.02 you would save on the Dayton Audio M4 does not close the gap.
Still deciding? The full Powered Home rankings cover every ranked option.
Specifications Side By Side
| JBL 305P MKII | Dayton Audio M4 | |
|---|---|---|
| Price | $289.00 per pair | $249.98 per pair |
| Ranked | #17 of 100 in Medium Size Powered Bookshelf Speakers | #52 of 100 in Medium Size Powered Bookshelf Speakers |
| Dimensions | 11.7”H x 7.3”W x 9.1”D (297.2 x 185.4 x 231.1 mm) | 5” x 6.5” x 9.5” (127 x 165 x 241 mm) (W x D x H) |
| Frequency Response | 49 Hz - 20 kHz (+-3 dB) (Manufacturer specified) | 40Hz - 20kHz (Manufacturer specified) |
| Bass Extension (-3dB) | 50Hz (measured, Erin’s Audio Corner) | 121Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 43Hz (measured, Erin’s Audio Corner) | 60Hz (measured, Erin’s Audio Corner) |
| Inputs | XLR, TRS | RCA, USB-C, Bluetooth |
| Weight | 10.4 lbs (4.7 kg) each | 6.2 lbs (2.81 kg) (active), 5.1 lbs (2.31 kg) (passive) |
| Drivers | 5” (127mm) woofer | 4” aluminum woofer, 1” silk dome tweeter |
| App | No | No |
| Bluetooth | No | Yes |
| EQ | Yes (Room adjustment) | - |
| Amplifier Power | 81w Per Speaker | 75W RMS (150W peak) |
| Sensitivity | 91.1dB (measured at 0.3V/1m, Erin’s Audio Corner) | - |
| Spinorama Preference Score | 5.38 | - |
| Spinorama Preference Score with Perfect Sub | 7.52 | - |
| XLR Input | Yes | No |
| RCA Input | No | Yes |
| TRS Input | Yes | No |
| Optical Input | No | No |
| Coaxial Input | No | No |
| USB Input | No | Yes |
| HDMI Input | No | No |
| AES Input | No | No |
| Aux Input | No | Yes (RCA) |
| Bluetooth Version | - | 5.0 |
| Bluetooth Codecs | - | SBC, aptX |
| Digital Aux Input | - | Yes (USB-C DAC, up to 192kHz/32-bit) |
| Stereo | - | Yes |
| Power Input | - | AC Power cord |
| Outputs | - | Subwoofer (20Hz-200Hz) |
| Subwoofer Output | - | Yes |
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Prices on this page were last checked October 7, 2026 at 9:25 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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The Two Speakers In Full
JBL 305P MKII: $289.00 per pair Amazon eBay
Older model: the JBL LSR305 (ranked lower, rated 4.2/5).
Same family: the JBL 306P MKII (larger bookshelf, rated 4.1/5) and the JBL 308P MKII (larger bookshelf, rated 4.4/5).
Pros: Erin’s Klippel data gives 5.38 standalone and 7.52 with an ideal subwoofer, with bass reaching -3dB around 51Hz. Broad horizontal coverage and reasonably smooth reflected sound support stable imaging across a desk. The existing review reports effective limiting and little sustained thermal compression, making it a strong budget-monitor option rather than just a speaker with a promising frequency curve. Measured bass extension of 50Hz (-3dB), with a measured sensitivity of 91.1dB.
Cons: The 3.3dB midrange span and rising response show it is not perfectly neutral. A port-related feature around 1.6kHz and some excess treble can be audible; the review recommends the treble-trim switch. Vertical crossover interference makes ear height important. Amplifier hiss may matter in very quiet nearfield use, and rear-port placement needs room-boundary adjustment.
Full JBL 305P MKII review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 81w Per Speaker |
| App | No |
| Aux Input | No |
| Bass Extension (-10dB) | 43Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 50Hz (measured, Erin’s Audio Corner) |
| Bluetooth | No |
| Coaxial Input | No |
| Dimensions | 11.7”H x 7.3”W x 9.1”D (297.2 x 185.4 x 231.1 mm) |
| Drivers | 5” (127mm) woofer |
| EQ | Yes (Room adjustment) |
| Frequency Response | 49 Hz - 20 kHz (+-3 dB) (Manufacturer specified) |
| HDMI Input | No |
| Inputs | XLR, TRS |
| Optical Input | No |
| RCA Input | No |
| Sensitivity | 91.1dB (measured at 0.3V/1m, Erin’s Audio Corner) |
| Spinorama Preference Score | 5.38 |
| Spinorama Preference Score with Perfect Sub | 7.52 |
| TRS Input | Yes |
| USB Input | No |
| Weight | 10.4 lbs (4.7 kg) each |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Erin’s Audio Corner Review Measurements More from Erin’s Audio Corner →
- Audio Science Review Measurements More from Audio Science Review →
- Erin’s Audio Corner: LIVE! JBL 305P MkII Powered Studio Monitor Review
- DSAUDIO.review: DSAUDIO.review Focal Alpha 50 EVO vs JBL 305P MKII sound.DEMO More from DSAUDIOreview →
- DSAUDIO.review: JBL 305P MKII vs Yamaha HS5 6-Track Comparison
- DSAUDIO.review: DSAUDIO.review JBL 305P MKII vs KRK Classic 5 CL5G3 sound.DEMO
- DSAUDIO.review: JBL 305P MKII vs Adam Audio T5V 6-Track Comparison
- DSAUDIO.review: DSAUDIO.review Adam Audio A5X vs JBL 305P MKII sound.DEMO
- DSAUDIO.review: DSAUDIO.review Kali Audio LP-6 V2 (2nd Wave) vs JBL 305P MKII sound.DEMO
- DSAUDIO.review: DSAUDIO.review Edifier MR4 vs JBL 305P MKII sound.DEMO
- DSAUDIO.review: Kali Audio IN-5 vs JBL 305P MKII Sound & Frequency Response Comparison
- DSAUDIO.review: JBL 308P MKII vs JBL 305P MKII Sound & Frequency Response Comparison
- DSAUDIO.review: Neumann KH80 DSP vs JBL 305P MKII Sound & Frquency Response Comparison
- DSAUDIO.review: JBL 305P MKII vs PreSonus Eris E5 6-Track Comparison
- Erin’s Audio Corner Measurements (spinorama.org)
- Jasper Tech: Best Desktop Computer Speakers for Every Budget – 2026 More from Jasper Tech →
- Jasper Tech: Best Powered Bookshelf Speakers for Every Budget - 2025
- Jasper Tech: Are the iLoud Micro Monitor Pro the Best Studio Monitor Speakers for your Home Studio?
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Dayton Audio M4: $249.98 per pair Parts Express eBay
Pros: A compact powered pair with a subwoofer output, useful source connections and a solid cabinet. The existing review describes reasonable linearity for the price and a subdued upper treble that avoids an aggressively bright presentation. It is best considered for a close desktop setup. Measured bass extension of 121Hz (-3dB).
Cons: Existing listening and output notes describe limited bass, a balance that changes with distance, and distortion rising above roughly 93dB. The soft treble is a tonal preference, not evidence of reference neutrality; a subwoofer does not establish greater midrange headroom.
Full Dayton Audio M4 review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 75W RMS (150W peak) |
| 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 | Yes |
| Bluetooth Codecs | SBC, aptX |
| Bluetooth Version | 5.0 |
| Coaxial Input | No |
| 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) |
| Drivers | 4” aluminum woofer, 1” silk dome tweeter |
| Frequency Response | 40Hz - 20kHz (Manufacturer specified) |
| HDMI Input | No |
| Inputs | RCA, USB-C, Bluetooth |
| Optical Input | No |
| Outputs | Subwoofer (20Hz-200Hz) |
| Power Input | AC Power cord |
| RCA Input | Yes |
| Stereo | Yes |
| Subwoofer Output | Yes |
| TRS Input | No |
| USB Input | Yes |
| Weight | 6.2 lbs (2.81 kg) (active), 5.1 lbs (2.31 kg) (passive) |
| XLR Input | No |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons