Short answer: both are discontinued, so this only matters if you are buying used. Used, the Thomann Swissonic A306 is the better pick: it ranks #52 of 113 powered bookshelf speakers by sound quality (rated 4.3/5), against #71 (rated 4.1/5) for the JBL 4329P. If you want one new, the Neumann KH 150 ranks #8 at $3,398.
The JBL 4329P is the deeper-bass choice. Measured -3dB extension of 32.2Hz provides deeper native bass than the smaller JBL 4305P. Its bass reaches about 31Hz before falling 3dB, against 43Hz for the Thomann Swissonic A306. It keeps a wired aux input, which the Thomann Swissonic A306 lacks. The tradeoff: The measured 4.5dB response span from 300Hz to 5kHz includes a notable midrange dip, so it is not as neutral as its size and price might suggest.
Why pick the Thomann Swissonic A306: With the treble control set to -2dB, Erin measured a 7.29 ideal-subwoofer score and 43.9Hz -3dB bass extension. The tradeoff: The published result is not the flat-control setting: it specifically uses -2dB treble.
Buy the Thomann Swissonic A306 only if you find one used in good condition; both are discontinued, and it is the better rated of the two. For a new speaker, start with the Neumann KH 150 instead.
Still deciding? The full Powered Home rankings cover every ranked option.
Specifications Side By Side
| JBL 4329P | Thomann Swissonic A306 | |
|---|---|---|
| Price | $4,500 per pair Discontinued | $250 per pair Discontinued |
| Ranked | #71 of 113 in Large Size Powered Bookshelf Speakers | #52 of 113 in Large Size Powered Bookshelf Speakers |
| Drivers | 8” midwoofer, 1” compression driver with JBL High-Definition Imaging horn | 6.5” woofer, 1” silk dome tweeter with waveguide |
| Dimensions | 20.3”H x 12.6”W x 12.7”D | 8.8”W x 14.2”H x 11.1”D (224 x 361 x 282 mm) |
| Weight | 34.4 lbs (15.6 kg) (primary), 34.4 lbs (15.6 kg) (secondary) | 13.6 lbs (6.17 kg) each |
| Sensitivity | 102.2dB (measured at 0.3V/1m, Erin’s Audio Corner) | 89.9dB (measured at 0.3V/1m, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 31Hz (measured, Erin’s Audio Corner) | 43Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 27Hz (measured, Erin’s Audio Corner) | 34Hz (measured, Erin’s Audio Corner) |
| Frequency Response | 30Hz - 20kHz (anechoic, manufacturer specified) | 43Hz - 20kHz (manufacturer specified) |
| Inputs | USB, Optical, Bluetooth, Analog, 3.5mm, AirPlay 2 | XLR (balanced), RCA (unbalanced) |
| Bluetooth Codecs | SBC, aptX Adaptive | - |
| Woofer Cabinet | ported | - |
| Spinorama Preference Score | 5.40 | 5.41 |
| Spinorama Preference Score with Perfect Sub | 6.72 | 7.29 |
| XLR Input | No | Yes |
| RCA Input | No | Yes |
| TRS Input | No | No |
| Optical Input | Yes | No |
| Coaxial Input | No | No |
| USB Input | Yes | No |
| HDMI Input | No | No |
| AES Input | No | No |
| Aux Input | Yes | No |
| Amplifier Power | 300W RMS per speaker (600W total system power) | 100W bi-amplified total (50W + 50W, Class D) |
| Bluetooth | Yes | No |
| Bluetooth Version | 5.3 | - |
| Crossover Frequency | - | 2600Hz |
| DSP | - | Yes (rear-panel treble/bass trim, wall/near-wall placement switches) |
Related Speaker Comparisons
How Thomann Swissonic A306 compares with other leading options:
- SHIVAUDYO Point Zero vs Thomann Swissonic A306
- Yamaha HS8 vs Thomann Swissonic A306
- Kali Audio LP-6 V2 vs Thomann Swissonic A306
- Kali Audio LP-8 V2 vs Thomann Swissonic A306
- M-Audio BX8 D3 vs Thomann Swissonic A306
Prices on this page were last checked October 9, 2026 at 8:01 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 4329P: $4,500 per pair Discontinued eBay
Pros: Measured -3dB extension of 32.2Hz provides deeper native bass than the smaller JBL 4305P. Integrated amplification and streaming make it convenient for a full-range living-room system, and its larger format is useful when scale matters. Measured bass extension of 31Hz (-3dB), with a measured sensitivity of 102.2dB.
Cons: The measured 4.5dB response span from 300Hz to 5kHz includes a notable midrange dip, so it is not as neutral as its size and price might suggest. Its 6.72 ideal-subwoofer score trails the JBL 4305P. There is no HDMI connection for the simplest TV hookup. Discontinued.
Full JBL 4329P review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 300W RMS per speaker (600W total system power) |
| Aux Input | Yes |
| Bass Extension (-10dB) | 27Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 31Hz (measured, Erin’s Audio Corner) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, aptX Adaptive |
| Bluetooth Version | 5.3 |
| Coaxial Input | No |
| Dimensions | 20.3”H x 12.6”W x 12.7”D |
| Drivers | 8” midwoofer, 1” compression driver with JBL High-Definition Imaging horn |
| Frequency Response | 30Hz - 20kHz (anechoic, manufacturer specified) |
| HDMI Input | No |
| Inputs | USB, Optical, Bluetooth, Analog, 3.5mm, AirPlay 2 |
| Optical Input | Yes |
| RCA Input | No |
| Sensitivity | 102.2dB (measured at 0.3V/1m, Erin’s Audio Corner) |
| Spinorama Preference Score | 5.40 |
| Spinorama Preference Score with Perfect Sub | 6.72 |
| TRS Input | No |
| USB Input | Yes |
| Weight | 34.4 lbs (15.6 kg) (primary), 34.4 lbs (15.6 kg) (secondary) |
| Woofer Cabinet | ported |
| XLR Input | No |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Thomann Swissonic A306: $250 per pair Discontinued Thomann eBay
Older model: the Thomann Swissonic A305 (rated 4.2/5).
Pros: With the treble control set to -2dB, Erin measured a 7.29 ideal-subwoofer score and 43.9Hz -3dB bass extension. This is a useful affordable monitoring option when carefully set up, with onboard controls for basic tonal adjustment. Measured bass extension of 43Hz (-3dB), with a measured sensitivity of 89.9dB.
Cons: The published result is not the flat-control setting: it specifically uses -2dB treble. Even then, the response spans 2.8dB from 300Hz to 5kHz, so balance is not as even as the leaders. Bass output and vertical listening position remain practical limitations. Discontinued.
Full Thomann Swissonic A306 review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 100W bi-amplified total (50W + 50W, Class D) |
| Aux Input | No |
| Bass Extension (-10dB) | 34Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 43Hz (measured, Erin’s Audio Corner) |
| Bluetooth | No |
| Coaxial Input | No |
| Crossover Frequency | 2600Hz |
| DSP | Yes (rear-panel treble/bass trim, wall/near-wall placement switches) |
| Dimensions | 8.8”W x 14.2”H x 11.1”D (224 x 361 x 282 mm) |
| Drivers | 6.5” woofer, 1” silk dome tweeter with waveguide |
| Frequency Response | 43Hz - 20kHz (manufacturer specified) |
| HDMI Input | No |
| Inputs | XLR (balanced), RCA (unbalanced) |
| Optical Input | No |
| RCA Input | Yes |
| Sensitivity | 89.9dB (measured at 0.3V/1m, Erin’s Audio Corner) |
| Spinorama Preference Score | 5.41 |
| Spinorama Preference Score with Perfect Sub | 7.29 |
| TRS Input | No |
| USB Input | No |
| Weight | 13.6 lbs (6.17 kg) each |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Thomann Swissonic A306 vs Kali Audio LP-6 V2
- Thomann Swissonic A306 vs Yamaha HS8
- Thomann Swissonic A306 vs Kali Audio LP-8 V2
- Thomann Swissonic A306 vs SHIVAUDYO Point Zero
- Thomann Swissonic A306 vs M-Audio BX8 D3
- Thomann Swissonic A306 vs Focal Alpha 65 EVO
- Thomann Swissonic A306 vs Adam Audio T8V
- Thomann Swissonic A306 vs Kali Audio LP-8
- See all 11 comparisons