Short answer: the JBL 305P MKII for better sound quality, the Donner Dyna 3 for the lower price. The JBL 305P MKII ranks #11 of 60 powered bookshelf speakers at $319. The Donner Dyna 3 ranks #59 at $89, $230 cheaper.
What the JBL 305P MKII offers: A fantastic value in studio monitors. Extremely close to the Focal Alpha 50 EVO, almost indistinguishable. Surprisingly deep and wide soundstage. Good horizontal dispersion (~70 degrees). Has a proper limiter that controls output cleanly rather than crudely cutting bass, and holds up well under sustained loud playback with minimal thermal compression. Watch for: Possible slight hissing from the amps at low levels. Rear ported, can be an issue close to walls. A port resonance around 1.6kHz is audible and distracting on some tracks. Midrange is somewhat scooped rather than flat for a studio monitor, and treble runs about 1.5dB hot - Erin’s Audio Corner recommends using the -2dB treble shelf switch. Vertical dispersion narrows around the crossover, so try to stay within about 10 degrees of the tweeter axis.
What the Donner Dyna 3 offers: Very inexpensive self-powered desktop pair with Bluetooth, balanced TRS, RCA and 3.5mm connectivity plus included isolation pads. The tiny 3-inch woofer/1-inch tweeter format occupies little desk space and produces usable output for close-range background listening. Watch for: Erin’s Klippel data contradicts the advertised studio-monitor accuracy: response is severely non-neutral, directivity is poorly integrated and the tonal errors are too large for a reference role. The small woofer has limited bass extension and high-level headroom, while distortion and compression rise quickly. It is an active system, so passive sensitivity and impedance do not apply; Erin did not publish comparable passive measurements. Better-measuring budget monitors are worth the additional cost.
Buy the JBL 305P MKII if sound quality matters more than the price. Buy the Donner Dyna 3 if the price matters more than sound quality.
If sound quality matters at all to you, skip the Donner Dyna 3. It ranks near the bottom of the 60 powered bookshelf speakers, so look higher up the list instead.
Specifications Side By Side
| JBL 305P MKII | Donner Dyna 3 | |
|---|---|---|
| Price | $319.00 | $89/pair |
| Ranked | #11 of 60 in Medium Size Powered Bookshelf Speakers | #59 of 60 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) | - |
| Frequency Response | 49 Hz - 20 kHz (+-3 dB) (Manufacturer specified) | - |
| Bass Extension (-3dB) | 50Hz (measured, Erin’s Audio Corner) | 85.0Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 43Hz (measured, Erin’s Audio Corner) | 66.8Hz (measured, Erin’s Audio Corner) |
| Inputs | XLR, TRS | Bluetooth, TRS, RCA and 3.5mm |
| Weight | 10.4 lbs / 4.7 kg each | - |
| Drivers | 5" (127mm) woofer | 1" dome tweeter; 3" woofer |
| App | No | - |
| Bluetooth | No | - |
| EQ | Yes (Room adjustment) | - |
| Output Power | 81w Per Speaker | - |
| Sensitivity | 91.1dB (measured at 0.3V/1m, Erin’s Audio Corner) | Not applicable (active loudspeaker) |
| Bass Extension | - | Limited by 3" woofer (Erin’s Audio Corner measurement) |
| Amplification | - | Built in |
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- Yamaha HS5 vs Donner Dyna 3
- JBL 305P MKII vs Presonus Eris E5
Prices on this page were last checked August 24, 2026 at 6:53 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: $319.00 Amazon eBay
Pros: A fantastic value in studio monitors. Extremely close to the Focal Alpha 50 EVO, almost indistinguishable. Surprisingly deep and wide soundstage. Good horizontal dispersion (~70 degrees). Has a proper limiter that controls output cleanly rather than crudely cutting bass, and holds up well under sustained loud playback with minimal thermal compression.
Cons: Possible slight hissing from the amps at low levels. Rear ported, can be an issue close to walls. A port resonance around 1.6kHz is audible and distracting on some tracks. Midrange is somewhat scooped rather than flat for a studio monitor, and treble runs about 1.5dB hot - Erin’s Audio Corner recommends using the -2dB treble shelf switch. Vertical dispersion narrows around the crossover, so try to stay within about 10 degrees of the tweeter axis.
Full JBL 305P MKII review and specifications →
| App | No |
|---|---|
| Bass Extension (-10dB) | 43Hz (measured, Erin's Audio Corner) |
| Bass Extension (-3dB) | 50Hz (measured, Erin's Audio Corner) |
| Bluetooth | 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) |
| Inputs | XLR, TRS |
| Output Power | 81w Per Speaker |
| Sensitivity | 91.1dB (measured at 0.3V/1m, Erin's Audio Corner) |
| Weight | 10.4 lbs / 4.7 kg each |
- 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)
- Reddit Search for JBL 305P MKII Review
- Head-to-Head Comparisons
Donner Dyna 3: $89/pair Amazon eBay
Pros: Very inexpensive self-powered desktop pair with Bluetooth, balanced TRS, RCA and 3.5mm connectivity plus included isolation pads. The tiny 3-inch woofer/1-inch tweeter format occupies little desk space and produces usable output for close-range background listening.
Cons: Erin’s Klippel data contradicts the advertised studio-monitor accuracy: response is severely non-neutral, directivity is poorly integrated and the tonal errors are too large for a reference role. The small woofer has limited bass extension and high-level headroom, while distortion and compression rise quickly. It is an active system, so passive sensitivity and impedance do not apply; Erin did not publish comparable passive measurements. Better-measuring budget monitors are worth the additional cost.
Full Donner Dyna 3 review and specifications →
| Amplification | Built in |
|---|---|
| Bass Extension | Limited by 3" woofer (Erin's Audio Corner measurement) |
| Bass Extension (-10dB) | 66.8Hz (measured, Erin's Audio Corner) |
| Bass Extension (-3dB) | 85.0Hz (measured, Erin's Audio Corner) |
| Drivers | 1" dome tweeter; 3" woofer |
| Inputs | Bluetooth, TRS, RCA and 3.5mm |
| Sensitivity | Not applicable (active loudspeaker) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons