Short answer: the JBL 305P MKII. It ranks #18 of 105 powered bookshelf speakers by sound quality, rated 4.3/5, at $289; the Avantone Pro Active MixCube ranks #104, rated 1.7/5, and costs $518, so there is not much of a tradeoff to weigh.
The JBL 305P MKII is the more accurate option. 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 -3.58 for the Avantone Pro Active MixCube. The tradeoff: The 3.3dB midrange span and rising response show it is not perfectly neutral.
The case for the Avantone Pro Active MixCube: A deliberately bandwidth-limited single-driver monitor for checking midrange balance and mix translation. The tradeoff: It is not a full-range music speaker.
Buy the JBL 305P MKII. It is rated higher for sound quality than the Avantone Pro Active MixCube and costs less, so only choose the other one for a particular feature it does better.
Still deciding? The full Powered Home rankings cover every ranked option.
Specifications Side By Side
| JBL 305P MKII | Avantone Pro Active MixCube | |
|---|---|---|
| Price | $289.00 per pair | $518 per pair |
| Ranked | #18 of 105 in Medium Size Powered Bookshelf Speakers | #104 of 105 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) | 6.5H x 6.5W x 6.5D in |
| Frequency Response | 49 Hz - 20 kHz (+-3 dB) (Manufacturer specified) | 90Hz-17kHz |
| Bass Extension (-3dB) | 50Hz (measured, Erin’s Audio Corner) | - |
| Bass Extension (-10dB) | 43Hz (measured, Erin’s Audio Corner) | - |
| Inputs | XLR, TRS | Balanced XLR/TRS combo |
| Weight | 10.4 lbs (4.7 kg) each | 7.1 lbs (3.2 kg) each |
| Drivers | 5” (127mm) woofer | 5.25-inch paper-cone driver; 5.25-inch paper-cone driver; 5.25-inch paper-cone driver; 5.25-inch paper-cone driver |
| App | No | - |
| Bluetooth | No | No |
| EQ | Yes (Room adjustment) | - |
| Amplifier Power | 81w Per Speaker | 60W RMS Class AB |
| Sensitivity | 91.1dB (measured at 0.3V/1m, Erin’s Audio Corner) | - |
| Spinorama Preference Score | 5.38 | -3.58 |
| Spinorama Preference Score with Perfect Sub | 7.52 | 1.16 |
| 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 | - | Powered sealed full-range monitor |
| Maximum SPL | - | 104dB at 1m |
Related Speaker Comparisons
How JBL 305P MKII compares with other leading options:
- Genelec 8331A vs JBL 305P MKII
- JBL 305P MKII vs Neumann KH120 MKII
- Genelec 8030C vs JBL 305P MKII
- JBL 305P MKII vs Neumann KH80 DSP
- JBL 305P MKII vs Reflector Audio Square Two
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). See every JBL 3 Series generation.
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 →
| Released | Jan 2018 (8 years ago) |
|---|---|
| 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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Avantone Pro Active MixCube: $518 per pair B&H Photo Video eBay
Pros: A deliberately bandwidth-limited single-driver monitor for checking midrange balance and mix translation. The powered, sealed format, isolation pad and stand mounting make it useful as a secondary studio reference.
Cons: It is not a full-range music speaker. The measured -3dB point is around 297Hz, and scores of -3.58 standalone and 1.16 with an ideal subwoofer reflect severe bandwidth and response limitations for general listening. A subwoofer cannot restore the missing high-frequency coverage. This low general-purpose rank does not measure its usefulness for the specialist task of checking a mix.
Full Avantone Pro Active MixCube review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 60W RMS Class AB |
| Aux Input | No |
| Bluetooth | No |
| Coaxial Input | No |
| Dimensions | 6.5H x 6.5W x 6.5D in |
| Drivers | 5.25-inch paper-cone driver; 5.25-inch paper-cone driver; 5.25-inch paper-cone driver; 5.25-inch paper-cone driver |
| Enclosure | Powered sealed full-range monitor |
| Frequency Response | 90Hz-17kHz |
| HDMI Input | No |
| Inputs | Balanced XLR/TRS combo |
| Maximum SPL | 104dB at 1m |
| Optical Input | No |
| RCA Input | No |
| Spinorama Preference Score | -3.58 |
| Spinorama Preference Score with Perfect Sub | 1.16 |
| TRS Input | Yes |
| USB Input | No |
| Weight | 7.1 lbs (3.2 kg) each |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Avantone Pro Active MixCube vs Donner Dyna 3
- Avantone Pro Active MixCube vs Fluid Audio FX50 V2
- Avantone Pro Active MixCube vs Edifier R1280DB
- Avantone Pro Active MixCube vs Audioengine HD4
- Avantone Pro Active MixCube vs Edifier S1000MKII
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- Avantone Pro Active MixCube vs Edifier R2000DB
- Avantone Pro Active MixCube vs KRK Classic 5
- See all 16 comparisons