Short answer: the Kali Audio IN-UNF for better sound quality, the NHT Pro M-00 for the lower price. The Kali Audio IN-UNF ranks #38 of 42 powered bookshelf speakers at $699. The NHT Pro M-00 ranks #42 at $498, $201 cheaper.
On the Kali Audio IN-UNF side: Ingenious ultra-nearfield system: a desk-mounted bass module uses two opposed 4.5-inch woofers below 280Hz, while the satellites use time-aligned 4-inch/1-inch coincident drivers. Set against that: This is a very specialized system rather than a general desktop-speaker recommendation.
The case for the NHT Pro M-00: Cast aluminum-zinc alloy enclosure doubles as a heatsink for the built-in discrete Class AB amplifier, and both RCA and XLR/TRS inputs are provided with a near-field/far-field voicing switch. The tradeoff: Amir identified a critical flaw: a sudden suck-out in the upper bass frequencies that affects many commonly-used notes.
Buy the Kali Audio IN-UNF if sound quality matters more than the price. Buy the NHT Pro M-00 if the price matters more than sound quality.
If sound quality matters at all to you, skip both of these and look higher up the 42 powered bookshelf speakers instead.
Specifications Side By Side
| Kali Audio IN-UNF | NHT Pro M-00 | |
|---|---|---|
| Price | $699 | $498 pair, discontinued (used market; originally $249 each) |
| Ranked | #38 of 42 in Medium Size Powered Bookshelf Speakers | #42 of 42 in Medium Size Powered Bookshelf Speakers |
| Drivers | Bass module: two opposed 4.5" woofers; satellites: 4" coincident midrange with 1" textile-dome tweeter | 1" ferrofluid-cooled fabric dome tweeter, 4.5" treated paper-cone woofer |
| Output Power | 100W LF + 60W mid/HF per channel (continuous) | 75W RMS continuous, 150W peak (per speaker) |
| Inputs | USB-C, optical, 3.5mm, balanced TRS | RCA, XLR/TRS |
| Bass Extension (-3dB) | 47Hz (manufacturer specified; Erin did not publish an anechoic F3) | - |
| Bass Extension (-10dB) | 39Hz (manufacturer specified; Erin did not publish an anechoic F10) | - |
| Frequency Response | 47Hz - 21kHz +/-3dB (manufacturer specified) | - |
| Crossovers | 280Hz LF-to-midrange; 2.8kHz midrange-to-HF | - |
| Dimensions | Bass module: 11.6"H x 19.4"W x 5.25"D; satellites: 6.25" diameter | 9H x 5.7W x 7.3D in |
| Max SPL | 103dB peak at 1m (manufacturer specified) | - |
| DSP | Yes (placement/boundary and tonal trims) | No |
| Bluetooth | No | No |
| Weight | - | 14 lbs / 6.35 kg each |
| App | - | No |
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The Two Speakers In Full
Kali Audio IN-UNF: $699 Kali Audio
Pros: Ingenious ultra-nearfield system: a desk-mounted bass module uses two opposed 4.5-inch woofers below 280Hz, while the satellites use time-aligned 4-inch/1-inch coincident drivers. It is specifically engineered around the desk and, set up to Kali’s supplied placement template, sounded much better than it initially did to Erin; his moving-mic measurement at arm’s length closely matched the system’s predicted response. DSP provides placement, boundary and tonal trims, while USB-C, optical, 3.5mm and balanced TRS inputs cover desktop and studio sources. The round satellite enclosure avoids conventional baffle-edge diffraction, and the coaxial satellites image best aimed directly at the listener.
Cons: This is a very specialized system rather than a general desktop-speaker recommendation. The sizeable bass module must stay on the desk and prescribed satellite spacing can conflict with dual or ultrawide monitors; Erin and Joe N Tell both preferred Kali’s LP-6/IN-series alternatives for their own desks. A bump around 100-130Hz and a possible 1.2kHz diffraction feature appeared in Erin’s exploratory anechoic data, but he explicitly cautioned that those measurements do not replicate the required desk geometry. Bass falls away around 40-50Hz despite the separate bass unit. Erin did not publish comparable anechoic F3/F10, sensitivity or impedance figures because the system is designed around a fixed desk arrangement.
Full Kali Audio IN-UNF review and specifications →
| Bass Extension (-10dB) | 39Hz (manufacturer specified; Erin did not publish an anechoic F10) |
|---|---|
| Bass Extension (-3dB) | 47Hz (manufacturer specified; Erin did not publish an anechoic F3) |
| Bluetooth | No |
| Crossovers | 280Hz LF-to-midrange; 2.8kHz midrange-to-HF |
| DSP | Yes (placement/boundary and tonal trims) |
| Dimensions | Bass module: 11.6"H x 19.4"W x 5.25"D; satellites: 6.25" diameter |
| Drivers | Bass module: two opposed 4.5" woofers; satellites: 4" coincident midrange with 1" textile-dome tweeter |
| Frequency Response | 47Hz - 21kHz +/-3dB (manufacturer specified) |
| Inputs | USB-C, optical, 3.5mm, balanced TRS |
| Max SPL | 103dB peak at 1m (manufacturer specified) |
| Output Power | 100W LF + 60W mid/HF per channel (continuous) |
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- Reviews, Comparisons and Sound Samples
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- Kali Audio IN-UNF vs Audioengine A5+ Classic
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NHT Pro M-00: $498 pair, discontinued (used market; originally $249 each)
Pros: Cast aluminum-zinc alloy enclosure doubles as a heatsink for the built-in discrete Class AB amplifier, and both RCA and XLR/TRS inputs are provided with a near-field/far-field voicing switch.
Cons: Amir identified a critical flaw: a sudden suck-out in the upper bass frequencies that affects many commonly-used notes. Treble peaks on-axis, and vertical-axis performance is particularly problematic. In-room response turns notably bright in rooms with absorptive surfaces. Comparing directly to the JBL 305P Mark II, Amir found the NHT sounded “dead and bright” while the JBL was “balanced” with “rich and warm detail,” concluding, “I would not remotely use the NHT M-00 relative to JBL 305P Mark ii. The difference in overall fidelity and pleasantness is immense.” Long discontinued; not recommended even on the used market.
Full NHT Pro M-00 review and specifications →
| App | No |
|---|---|
| Bluetooth | No |
| DSP | No |
| Dimensions | 9H x 5.7W x 7.3D in |
| Drivers | 1" ferrofluid-cooled fabric dome tweeter, 4.5" treated paper-cone woofer |
| Inputs | RCA, XLR/TRS |
| Output Power | 75W RMS continuous, 150W peak (per speaker) |
| Weight | 14 lbs / 6.35 kg each |
As an eBay Partner, we may be compensated if you make a purchase.
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons