Short answer: the Kali Audio SM-5 for better sound quality, the Audioengine HD4 for the lower price. The Kali Audio SM-5 ranks #4 of 64 powered bookshelf speakers at $3000. The Audioengine HD4 ranks #54 at $429, $2571 cheaper.
What the Kali Audio SM-5 offers: True coaxial design with the tweeter mounted inside the midrange, and an unusually large waveguide that extends into the front baffle itself - directivity is excellent both horizontally (about +/-55 degrees) and vertically (+50/-40 degrees), so off-axis and low-seated listening positions still get a consistent tonal balance. Overall linearity is very good with in-room extension to about 40-45Hz. Distortion at 96dB is very low through the midrange, with only a mild, expected breakup around 3kHz tied to a small dip in the response there. Built-in DSP with free downloadable software lets you EQ each speaker individually for placement or room correction without an outboard processor, and the cabinet is wall-mountable - useful for surrounds, front heights, or tight desk setups. Compares very favorably to Kali’s own IN-8: similar raw linearity and distortion, but without the IN-8’s diffraction issues above 7kHz. Watch for: Bass output is limited by the 5” mid-bass driver - don’t expect much excursion or high-SPL low end, though extension itself is reasonable for the size. A mild high-Q resonance lingers around 2.5-4kHz in burst decay, though not strong. Instantaneous dynamic range is limited to roughly 96-102dB at 1m before compression sets in.
What the Audioengine HD4 offers: Rated 3.3 in the SpeakerRanking database. Watch for: Not a great sounding speaker for the high price.
Buy the Kali Audio SM-5 if sound quality matters more than the price. Buy the Audioengine HD4 if the price matters more than sound quality.
If sound quality matters at all to you, skip the Audioengine HD4. It ranks near the bottom of the 64 powered bookshelf speakers, so look higher up the list instead.
Specifications Side By Side
| Kali Audio SM-5 | Audioengine HD4 | |
|---|---|---|
| Price | $3000 | $429.00 |
| Ranked | #4 of 64 in Medium Size Powered Bookshelf Speakers | #54 of 64 in Medium Size Powered Bookshelf Speakers |
| Bass Extension (-10dB) | 39Hz (measured, Erin’s Audio Corner) | - |
| Bass Extension (-3dB) | 45Hz (measured, Erin’s Audio Corner) | - |
| Inputs | XLR/TRS, AES/EBU (BNC), RJ45 network control | Bluetooth, Aux, RCA Input |
| Drivers | 1" coaxial tweeter, 4" coaxial midrange, 5" mid-bass woofer | 4" (102mm) woofer |
| App | Kali Audio DSP software (free download) | No |
| Bluetooth | No | No |
| EQ | Yes, per-speaker DSP | No |
| Weight | 20.9 lbs / 9.5 kg (21 lb) each | 7.3 lbs / 3.3 kg |
| Output Power | 150W total | 50w RMS Per Speaker |
| Dimensions | 15.7"H x 7.9"W x 9.8"D (400 x 200 x 250 mm) (15.6 x 7.9 x 9.8 in) | 9"H x 5.5"W x 6.5"D (228.6 x 139.7 x 165.1 mm) |
| Frequency Response | 39Hz - 35kHz ±10dB (47Hz - 21kHz ±3dB, Manufacturer specified) | 60 Hz-20 kHz (-3dB) (Manufacturer specified) |
| Max SPL | 117dB | - |
| Outputs | - | RCA Output |
Related Speaker Comparisons
More useful head-to-heads from the same speaker class:
- Genelec 8330A vs Genelec 8020D
- JBL 705P vs Genelec 8030C
- Genelec 8030C vs Neumann KH120 MKII
- Kali Audio SM-5 vs Topping MA4
- Audioengine A5+ Classic vs Kali Audio SM-5
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.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Speakers In Full
Kali Audio SM-5: $3000 Bhphotovideo eBay
Pros: True coaxial design with the tweeter mounted inside the midrange, and an unusually large waveguide that extends into the front baffle itself - directivity is excellent both horizontally (about +/-55 degrees) and vertically (+50/-40 degrees), so off-axis and low-seated listening positions still get a consistent tonal balance. Overall linearity is very good with in-room extension to about 40-45Hz. Distortion at 96dB is very low through the midrange, with only a mild, expected breakup around 3kHz tied to a small dip in the response there. Built-in DSP with free downloadable software lets you EQ each speaker individually for placement or room correction without an outboard processor, and the cabinet is wall-mountable - useful for surrounds, front heights, or tight desk setups. Compares very favorably to Kali’s own IN-8: similar raw linearity and distortion, but without the IN-8’s diffraction issues above 7kHz.
Cons: Bass output is limited by the 5” mid-bass driver - don’t expect much excursion or high-SPL low end, though extension itself is reasonable for the size. A mild high-Q resonance lingers around 2.5-4kHz in burst decay, though not strong. Instantaneous dynamic range is limited to roughly 96-102dB at 1m before compression sets in.
Full Kali Audio SM-5 review and specifications →
| App | Kali Audio DSP software (free download) |
|---|---|
| Bass Extension (-10dB) | 39Hz (measured, Erin's Audio Corner) |
| Bass Extension (-3dB) | 45Hz (measured, Erin's Audio Corner) |
| Bluetooth | No |
| Dimensions | 15.7"H x 7.9"W x 9.8"D (400 x 200 x 250 mm) (15.6 x 7.9 x 9.8 in) |
| Drivers | 1" coaxial tweeter, 4" coaxial midrange, 5" mid-bass woofer |
| EQ | Yes, per-speaker DSP |
| Frequency Response | 39Hz - 35kHz ±10dB (47Hz - 21kHz ±3dB, Manufacturer specified) |
| Inputs | XLR/TRS, AES/EBU (BNC), RJ45 network control |
| Max SPL | 117dB |
| Output Power | 150W total |
| Weight | 20.9 lbs / 9.5 kg (21 lb) each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Audioengine HD4: $429.00 Amazon eBay
Cons: Not a great sounding speaker for the high price.
Full Audioengine HD4 review and specifications →
| App | No |
|---|---|
| Bluetooth | No |
| Dimensions | 9"H x 5.5"W x 6.5"D (228.6 x 139.7 x 165.1 mm) |
| Drivers | 4" (102mm) woofer |
| EQ | No |
| Frequency Response | 60 Hz-20 kHz (-3dB) (Manufacturer specified) |
| Inputs | Bluetooth, Aux, RCA Input |
| Output Power | 50w RMS Per Speaker |
| Outputs | RCA Output |
| Weight | 7.3 lbs / 3.3 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Audioengine HD4 vs Kali Audio IN-UNF
- Audioengine HD4 vs Edifier R1700BT
- Audioengine HD4 vs Edifier S1000MKII
- Audioengine HD4 vs Edifier S1000W
- Audioengine HD4 vs JBL One Series 104
- Audioengine HD4 vs Dynaudio LYD 5
- Audioengine HD4 vs Pioneer DJ VM-50
- Audioengine HD4 vs NHT Pro M-00
- See all 39 comparisons