Short answer: the Kali LP-UNF for better sound quality, the M-Audio BX4 D3 for the lower price. The Kali LP-UNF ranks #8 of 64 powered bookshelf speakers at $349. The M-Audio BX4 D3 ranks #56 at $149, $200 cheaper.
What the Kali LP-UNF offers: 1” dome tweeter on a waveguide crossed unusually low at 1.9kHz to a 4.5” ported midwoofer, giving wide vertical dispersion (about ±30-40° off the tweeter/mid reference axis) for a two-way design - well beyond the typical ±10-15°. Extensive dip-switch tuning covers desk vs. free-standing placement, near-wall (<0.5m) compensation, and ±2dB treble/bass adjustment. Distortion stays below 3% at 86dB; the reviewer calls it the best-measuring powered desktop monitor he’s tested, ahead of competitors like the PreSonus Eris E3.5 2nd Gen and Fosi SP3, which he describes as having one-note bass and roughly a 7dB midrange suckout. USB-C, RCA, TRS, and Bluetooth inputs; the secondary speaker is powered through a link cable from the primary unit rather than needing its own separate power connection. At $300/pair, called a no-brainer recommendation for a compact desktop monitor. Watch for: F3 of 54Hz and F10 of 39Hz mean bass rolls off quickly below about 40Hz, bottoming out around 50Hz in-room. No dedicated subwoofer output - pairing with an outboard sub (routing its own crossover back through the mains) is the only way to extend bass further. A built-in limiter caps real-world maximum output around 91dB/1m per speaker, about 5dB below the 96dB target used in compression testing, and distortion climbs past 3% beyond that point. Designed strictly for near-field use (about 0.8m recommended listening distance), not for filling a larger room at volume.
What the M-Audio BX4 D3 offers: Affordable compact powered pair with 4.5-inch Kevlar woofers, rear EQ controls, balanced TRS, RCA and front-panel aux/headphone connections. Spinorama predicts a 5.14 preference score with a subwoofer and useful nearfield bass extension near 62Hz. Watch for: The third-party measurement is low confidence, and the small shared-amplifier design has limited output and bass headroom. Its raw no-subwoofer preference score is modest, the rear port complicates wall placement, and only the left cabinet contains amplification and controls.
Buy the Kali LP-UNF if sound quality matters more than the price. Buy the M-Audio BX4 D3 if the price matters more than sound quality.
If sound quality matters at all to you, skip the M-Audio BX4 D3. It ranks near the bottom of the 64 powered bookshelf speakers, so look higher up the list instead.
Specifications Side By Side
| Kali LP-UNF | M-Audio BX4 D3 | |
|---|---|---|
| Price | $349.00 | $149/pair |
| Ranked | #8 of 64 in Medium Size Powered Bookshelf Speakers | #56 of 64 in Medium Size Powered Bookshelf Speakers |
| Bass Extension (-10dB) | 39Hz (measured, Erin’s Audio Corner) | - |
| Bass Extension (-3dB) | 54Hz (measured, Erin’s Audio Corner) | - |
| Inputs | Bluetooth, USB-C (digital), RCA, TRS | TRS, RCA, 3.5mm aux; headphone output |
| Drivers | 4.5" woofer, 1" Textile Dome tweeter | 1" dome tweeter, 4.5" Kevlar woofer |
| App | No | - |
| Bluetooth | No | - |
| EQ | No | - |
| Weight | 17.2 lbs / 7.8 kg | 9.8 lbs/pair |
| Sensitivity | 88.1dB (measured at 0.3V/1m, Erin’s Audio Corner) | - |
| Enclosure | - | 2-way powered stereo pair, rear-ported |
| Dimensions | - | 8.9H x 6.1W x 6.9D in |
| Power Output | - | 120W peak system |
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- Kali LP-UNF vs Fluid Audio FX50 V2
- Kali Audio IN-5 vs M-Audio BX4 D3
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
Kali LP-UNF: $349.00 Amazon eBay
Pros: 1” dome tweeter on a waveguide crossed unusually low at 1.9kHz to a 4.5” ported midwoofer, giving wide vertical dispersion (about ±30-40° off the tweeter/mid reference axis) for a two-way design - well beyond the typical ±10-15°. Extensive dip-switch tuning covers desk vs. free-standing placement, near-wall (<0.5m) compensation, and ±2dB treble/bass adjustment. Distortion stays below 3% at 86dB; the reviewer calls it the best-measuring powered desktop monitor he’s tested, ahead of competitors like the PreSonus Eris E3.5 2nd Gen and Fosi SP3, which he describes as having one-note bass and roughly a 7dB midrange suckout. USB-C, RCA, TRS, and Bluetooth inputs; the secondary speaker is powered through a link cable from the primary unit rather than needing its own separate power connection. At $300/pair, called a no-brainer recommendation for a compact desktop monitor.
Cons: F3 of 54Hz and F10 of 39Hz mean bass rolls off quickly below about 40Hz, bottoming out around 50Hz in-room. No dedicated subwoofer output - pairing with an outboard sub (routing its own crossover back through the mains) is the only way to extend bass further. A built-in limiter caps real-world maximum output around 91dB/1m per speaker, about 5dB below the 96dB target used in compression testing, and distortion climbs past 3% beyond that point. Designed strictly for near-field use (about 0.8m recommended listening distance), not for filling a larger room at volume.
Full Kali LP-UNF review and specifications →
| App | No |
|---|---|
| Bass Extension (-10dB) | 39Hz (measured, Erin's Audio Corner) |
| Bass Extension (-3dB) | 54Hz (measured, Erin's Audio Corner) |
| Bluetooth | No |
| Drivers | 4.5" woofer, 1" Textile Dome tweeter |
| EQ | No |
| Inputs | Bluetooth, USB-C (digital), RCA, TRS |
| Sensitivity | 88.1dB (measured at 0.3V/1m, Erin's Audio Corner) |
| Weight | 17.2 lbs / 7.8 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Erin’s Audio Corner Review Measurements More from Erin’s Audio Corner →
- Erin’s Audio Corner: The Perfect Desktop Speaker? Kali LP-UNF.
- Erin’s Audio Corner: The Best Budget Desktop Speakers, Tested & Rated
- Erin’s Audio Corner: My Absolute Favorite Products of 2024 Revealed
- Erin’s Audio Corner: 10 Great (and Terrible) Speakers Under $300!
- Erin’s Audio Corner Measurements (spinorama.org)
- Reddit Search for Kali LP-UNF Review
- Head-to-Head Comparisons
M-Audio BX4 D3: $149/pair Amazon eBay
Pros: Affordable compact powered pair with 4.5-inch Kevlar woofers, rear EQ controls, balanced TRS, RCA and front-panel aux/headphone connections. Spinorama predicts a 5.14 preference score with a subwoofer and useful nearfield bass extension near 62Hz.
Cons: The third-party measurement is low confidence, and the small shared-amplifier design has limited output and bass headroom. Its raw no-subwoofer preference score is modest, the rear port complicates wall placement, and only the left cabinet contains amplification and controls.
Full M-Audio BX4 D3 review and specifications →
| Dimensions | 8.9H x 6.1W x 6.9D in |
|---|---|
| Drivers | 1" dome tweeter, 4.5" Kevlar woofer |
| Enclosure | 2-way powered stereo pair, rear-ported |
| Inputs | TRS, RCA, 3.5mm aux; headphone output |
| Power Output | 120W peak system |
| Weight | 9.8 lbs/pair |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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- M-Audio BX4 D3 vs KEF LSX II LT
- M-Audio BX4 D3 vs IK Multimedia iLoud MTM MKII
- M-Audio BX4 D3 vs Kali Audio IN-5
- M-Audio BX4 D3 vs Yamaha HS5
- M-Audio BX4 D3 vs Adam Audio T5V
- See all 10 comparisons