Short answer: the Harman Kardon SoundSticks 4. It ranks #3 of 8 powered subwoofer and satellite combo speakers by sound quality, rated 3.3/5, at $229.95. The Logitech Z623 ranks #5, rated 3.2/5, at $172.89, $57.06 cheaper, which does not close the gap in sound quality.
The case for the Harman Kardon SoundSticks 4: An iconic sculptural design featuring clear transparent domes that showcase the inner acoustic architecture and subtle LED lighting. The catch: The transparent acrylic surfaces readily show dust, fingerprints, and micro-scratches requiring regular care.
The case for the Logitech Z623: A high-output 200W RMS / 400W peak THX-certified 2.1 system engineered for room-filling PC gaming, movie watching, and party playback. The catch: The acoustic tuning prioritizes visceral bass impact and energetic highs over audiophile midrange neutrality, resulting in a somewhat scooped frequency response.
Buy the Harman Kardon SoundSticks 4. It is rated higher for sound quality, and the $57.06 you would save on the Logitech Z623 does not close the gap.
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Specifications Side By Side
| Harman Kardon SoundSticks 4 | Logitech Z623 | |
|---|---|---|
| Price | $229.95 | $172.89 |
| Ranked | #3 of 8 in Powered Subwoofer and Satellite Combo Speakers | #5 of 8 in Powered Subwoofer and Satellite Combo Speakers |
| Country | United States | Switzerland |
| Warranty | 1 | 2 |
| Amplifier Power | 140W RMS (100W subwoofer + 2x 20W satellites) | 200W RMS (130W subwoofer + 2x 35W satellites), 400W peak |
| Aux Input | Yes | Yes |
| Bluetooth | Yes | No |
| Bluetooth Codecs | SBC | - |
| Bluetooth Version | 4.2 | - |
| Dimensions | Subwoofer: 276 x 231 x 231 mm, Satellite: 271 x 84 x 84 mm | Subwoofer: 284 x 305 x 266 mm, Satellite: 196 x 117 x 126 mm |
| Drivers | 5.25” down-firing subwoofer, eight 1.4” full-range satellite transducers | 7” front-firing subwoofer, 2.5” full-range satellite drivers |
| Frequency Response | 40Hz - 20kHz (Manufacturer specified) | 35Hz - 20kHz (Manufacturer specified) |
| Inputs | 3.5mm Aux, Bluetooth | RCA, 3.5mm main, 3.5mm auxiliary |
| Lights | Yes (white inner ambient glow) | - |
| RCA Input | No | Yes |
| USB Input | No | No |
| Weight | 9.8 lbs (4.43 kg) total system | 19.8 lbs (8.97 kg) total system |
| Certification | - | THX Certified |
| EQ | - | Dedicated bass volume dial |
| Headphone Output | - | Yes (3.5mm) |
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- Edifier S350DB vs Harman Kardon SoundSticks 4
- Klipsch ProMedia 2.1 THX vs Harman Kardon SoundSticks 4
- Harman Kardon SoundSticks 4 vs Klipsch ProMedia Lumina
- Klipsch ProMedia Lumina vs Logitech Z623
- Klipsch ProMedia 2.1 THX vs Logitech Z623
Prices on this page were last checked October 11, 2026 at 4:59 PM 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
Harman Kardon SoundSticks 4: $229.95 Amazon eBay
Pros: An iconic sculptural design featuring clear transparent domes that showcase the inner acoustic architecture and subtle LED lighting. Powered by a robust 140W RMS total amplifier, the system pairs a 5.25-inch down-firing subwoofer with dual vertical satellite columns housing four 1.4-inch full-range transducers each. The vertical transducer array produces a focused, wide stereo soundstage with clear vocal projection and tight, musical bass reaching down to 40Hz. Supports Bluetooth 4.2 wireless streaming alongside standard 3.5mm aux input.
Cons: The transparent acrylic surfaces readily show dust, fingerprints, and micro-scratches requiring regular care. There is no USB audio or optical input, and tone controls are minimal with no separate treble adjustment on the unit. Satellite cables are permanently attached to the sub.
Full Harman Kardon SoundSticks 4 review and specifications →
| Released | 2020 (6 years ago) |
|---|---|
| Amplifier Power | 140W RMS (100W subwoofer + 2x 20W satellites) |
| Aux Input | Yes |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.2 |
| Country | United States |
| Dimensions | Subwoofer: 276 x 231 x 231 mm, Satellite: 271 x 84 x 84 mm |
| Drivers | 5.25” down-firing subwoofer, eight 1.4” full-range satellite transducers |
| Frequency Response | 40Hz - 20kHz (Manufacturer specified) |
| Inputs | 3.5mm Aux, Bluetooth |
| Lights | Yes (white inner ambient glow) |
| RCA Input | No |
| USB Input | No |
| Warranty | 1 |
| Weight | 9.8 lbs (4.43 kg) total system |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Logitech Z623: $172.89 Amazon eBay
Pros: A high-output 200W RMS / 400W peak THX-certified 2.1 system engineered for room-filling PC gaming, movie watching, and party playback. Features a massive 7-inch front-firing ported subwoofer that delivers physical, chest-thumping low-end impact down to approximately 35Hz. Supports simultaneous multi-device connectivity via RCA and dual 3.5mm inputs, with convenient on-satellite power, volume, and dedicated bass level controls alongside an integrated headphone jack.
Cons: The acoustic tuning prioritizes visceral bass impact and energetic highs over audiophile midrange neutrality, resulting in a somewhat scooped frequency response. Satellites use single full-range drivers without dedicated tweeters. Lacks Bluetooth or digital inputs in this standard configuration.
Full Logitech Z623 review and specifications →
| Released | Sep 2010 (16 years ago) |
|---|---|
| Amplifier Power | 200W RMS (130W subwoofer + 2x 35W satellites), 400W peak |
| Aux Input | Yes |
| Bluetooth | No |
| Certification | THX Certified |
| Country | Switzerland |
| Dimensions | Subwoofer: 284 x 305 x 266 mm, Satellite: 196 x 117 x 126 mm |
| Drivers | 7” front-firing subwoofer, 2.5” full-range satellite drivers |
| EQ | Dedicated bass volume dial |
| Frequency Response | 35Hz - 20kHz (Manufacturer specified) |
| Headphone Output | Yes (3.5mm) |
| Inputs | RCA, 3.5mm main, 3.5mm auxiliary |
| RCA Input | Yes |
| USB Input | No |
| Warranty | 2 |
| Weight | 19.8 lbs (8.97 kg) total system |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons