Short answer: the JBL 305P MKII. It ranks #17 of 100 powered bookshelf speakers by sound quality (rated 4.3/5) at $289 and is still sold new; the M-Audio BX5 D3 ranks #41 (rated 3.9/5) and is discontinued, so it is only an option used.
The JBL 305P MKII is the more accurate pick. Erin’s Klippel data gives 5.38 standalone and 7.52 with an ideal subwoofer, with bass reaching -3dB around 51Hz. Its measured preference score, a predictor of how neutral it sounds, is 5.38 against 4.09 for the M-Audio BX5 D3. Watch for: The 3.3dB midrange span and rising response show it is not perfectly neutral.
What the M-Audio BX5 D3 does well: The third-party measurements suggest scores of 4.09 standalone and 6.69 with an ideal subwoofer, with a 2.4dB midrange span. The tradeoff: The response slopes downward by about 0.65dB per octave, potentially softening treble relative to the midrange.
Buy the JBL 305P MKII. It is rated higher for sound quality; the M-Audio BX5 D3 is no longer sold new.
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Specifications Side By Side
| JBL 305P MKII | M-Audio BX5 D3 | |
|---|---|---|
| Price | $289.00 per pair | $299 per pair Discontinued |
| Ranked | #17 of 100 in Medium Size Powered Bookshelf Speakers | #41 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) | 10H x 6.9W x 7.8D in |
| Frequency Response | 49 Hz - 20 kHz (+-3 dB) (Manufacturer specified) | 52Hz-35kHz |
| Bass Extension (-3dB) | 50Hz (measured, Erin’s Audio Corner) | - |
| Bass Extension (-10dB) | 43Hz (measured, Erin’s Audio Corner) | - |
| Inputs | XLR, TRS | XLR and TRS |
| Weight | 10.4 lbs (4.7 kg) each | 12.3 lbs (5.6 kg) each |
| Drivers | 5” (127mm) woofer | 1-inch silk tweeter, 5-inch Kevlar woofer |
| App | No | - |
| Bluetooth | No | No |
| EQ | Yes (Room adjustment) | - |
| Amplifier Power | 81w Per Speaker | 100W each |
| Sensitivity | 91.1dB (measured at 0.3V/1m, Erin’s Audio Corner) | - |
| Spinorama Preference Score | 5.38 | 4.09 |
| Spinorama Preference Score with Perfect Sub | 7.52 | 6.69 |
| XLR Input | Yes | Yes |
| RCA Input | No | No |
| TRS Input | Yes | Yes |
| Optical Input | No | No |
| Coaxial Input | No | No |
| USB Input | No | No |
| HDMI Input | No | No |
| AES Input | No | No |
| Aux Input | No | No |
| Enclosure | - | Active 2-way, rear-ported |
| Maximum SPL | - | 110dB |
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Prices on this page were last checked October 9, 2026 at 8:01 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
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?
- Head-to-Head Comparisons
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M-Audio BX5 D3: $299 per pair Discontinued Amazon eBay
Same family: the M-Audio BX4 D3 (smaller bookshelf, ranked lower, rated 3.4/5) and the M-Audio BX8 D3 (larger bookshelf, rated 4/5).
Pros: The third-party measurements suggest scores of 4.09 standalone and 6.69 with an ideal subwoofer, with a 2.4dB midrange span. Balanced inputs and acoustic-space adjustment are useful for a basic studio setup. The measured -3dB estimate is about 64Hz.
Cons: The response slopes downward by about 0.65dB per octave, potentially softening treble relative to the midrange. There is no digital input or automatic calibration, and the preference estimate does not verify distortion or output headroom. Discontinued.
Full M-Audio BX5 D3 review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 100W each |
| Aux Input | No |
| Bluetooth | No |
| Coaxial Input | No |
| Dimensions | 10H x 6.9W x 7.8D in |
| Drivers | 1-inch silk tweeter, 5-inch Kevlar woofer |
| Enclosure | Active 2-way, rear-ported |
| Frequency Response | 52Hz-35kHz |
| HDMI Input | No |
| Inputs | XLR and TRS |
| Maximum SPL | 110dB |
| Optical Input | No |
| RCA Input | No |
| Spinorama Preference Score | 4.09 |
| Spinorama Preference Score with Perfect Sub | 6.69 |
| TRS Input | Yes |
| USB Input | No |
| Weight | 12.3 lbs (5.6 kg) each |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- M-Audio BX5 D3 vs Kanto YU6
- M-Audio BX5 D3 vs Kali LP-UNF
- M-Audio BX5 D3 vs Adam Audio T5V
- M-Audio BX5 D3 vs Vanatoo Transparent Zero Plus
- M-Audio BX5 D3 vs Audioengine A5+ Classic
- M-Audio BX5 D3 vs KEF LSX II LT
- M-Audio BX5 D3 vs Airpulse A100
- M-Audio BX5 D3 vs Pioneer DJ VM-50
- See all 43 comparisons