Short answer: the Genelec 8361A for better sound quality, the JBL 4305P for the lower price. The Genelec 8361A ranks #5 of 40 powered bookshelf speakers at $10900. The JBL 4305P ranks #14 at $2200, $8700 cheaper.
What the Genelec 8361A offers: Three-way coaxial design: 5” mid-range with an inset 1” metal dome tweeter, flanked symmetrically above and below by two 10” front-loaded woofers. Watch for: Approximately $11,000 per pair; Genelec’s GLM room-correction add-on (measurement mic plus software) is another ~$450 and wasn’t used in this review.
What the JBL 4305P gets right: Erin measured a 45Hz F3 and heard solid 40–50Hz in-room extension—excellent for a compact 5.25-inch active monitor. The catch: The limiter becomes conspicuous around 96dB: Erin measured about 8dB lost near 50Hz at the highest drive and achieved roughly 93dB unweighted at 2m in-room.
Buy the Genelec 8361A if sound quality matters more than the price. Buy the JBL 4305P if the price matters more than sound quality.
Specifications Side By Side
| Genelec 8361A | JBL 4305P | |
|---|---|---|
| Price | $10900 | $2,200/pair |
| Ranked | #5 of 40 in Large Size Powered Bookshelf Speakers | #14 of 40 in Large Size Powered Bookshelf Speakers |
| Bass Extension (-10dB) | 29Hz (measured, Erin’s Audio Corner) | - |
| Bass Extension (-3dB) | 34Hz (measured, Erin’s Audio Corner) | 45Hz (measured, Erin’s Audio Corner) |
| Dimensions | 22.5"H x 14"W x 13.6"D (571.5 x 355.6 x 345.4 mm) | 13.2H x 8.3W x 8.8D inches |
| Inputs | XLR | - |
| Drivers | Dual 263 x 137 mm woofers, 5.1" coaxial with tweeter midrange, 1" (25mm) coaxial tweeter | 5.25-inch pulp woofer; 1-inch annular compression driver |
| Weight | 70.3 lbs / 31.9 kg each | - |
| App | Yes (GLM) | - |
| Bluetooth | No | - |
| DSP | Yes | - |
| EQ | Yes (via GLM software) | - |
| Frequency Response | 30Hz - 43kHz (±2dB) (Manufacturer specified) | - |
| Max SPL | 118dB @ 1m | - |
| Output Power | 1000w Per Speaker | - |
| Sensitivity | - | Not applicable (active DSP loudspeaker) |
| Maximum Output | - | ~93dB at 2m in-room before limiting (measured, Erin’s Audio Corner) |
| Amplification | - | 300W system: 125W LF + 25W HF per speaker |
Related Speaker Comparisons
More useful head-to-heads from the same speaker class:
- Genelec 8351B vs JBL 708P
- Genelec 8050B vs Genelec 8351B
- Neumann KH420 vs Genelec 8040B
- Genelec 8361A vs Genelec 8040B
- Neumann KH420 vs JBL 4305P
The Two Speakers In Full
Genelec 8361A: $10900 Bhphotovideo
Pros: Three-way coaxial design: 5” mid-range with an inset 1” metal dome tweeter, flanked symmetrically above and below by two 10” front-loaded woofers, giving nearly identical vertical response whether you’re sitting or standing. Wide, consistent horizontal radiation of about ±60°, very forgiving for multiple seats or a home-theater row. Distortion at both 86dB and 96dB/1m stays below roughly 1%, and multitone distortion is also under about 1% - among the cleanest speakers reviewed. Long-term compression is practically non-existent, with no woofer bottoming or audible intermodulation even driven to 90dB+ at 10 feet. In-room bass extension reaches down to about 35Hz without a subwoofer. Extensive back-panel tuning (bass rolloff, bass profile, treble profile, and a desk/console compensation switch) for boundary placement.
Cons: Approximately $11,000 per pair; Genelec’s GLM room-correction add-on (measurement mic plus software) is another ~$450 and wasn’t used in this review. Shows an on-axis dip around 200Hz that may be tied to some rear-panel radiation or resonance the reviewer couldn’t fully explain. In far-field listening there’s a mild upper-midrange/lower-treble rise (roughly 2-3kHz) that only smooths out with 5-10° of toe-out or closer near-field placement. Short-term compression testing shows some tweeter limiting, though it didn’t translate to audible issues in real-world listening. At about 70 lbs, awkward to lift onto a stand alone.
Full Genelec 8361A review and specifications →
| App | Yes (GLM) |
|---|---|
| Bass Extension (-10dB) | 29Hz (measured, Erin's Audio Corner) |
| Bass Extension (-3dB) | 34Hz (measured, Erin's Audio Corner) |
| Bluetooth | No |
| DSP | Yes |
| Dimensions | 22.5"H x 14"W x 13.6"D (571.5 x 355.6 x 345.4 mm) |
| Drivers | Dual 263 x 137 mm woofers, 5.1" coaxial with tweeter midrange, 1" (25mm) coaxial tweeter |
| EQ | Yes (via GLM software) |
| Frequency Response | 30Hz - 43kHz (±2dB) (Manufacturer specified) |
| Inputs | XLR |
| Max SPL | 118dB @ 1m |
| Output Power | 1000w Per Speaker |
| Weight | 70.3 lbs / 31.9 kg each |
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JBL 4305P: $2,200/pair Amazon JBL
Pros: Erin measured a 45Hz F3 and heard solid 40–50Hz in-room extension—excellent for a compact 5.25-inch active monitor. Tonality is neutral and non-fatiguing, vocal coloration is absent, imaging is precise, and the HDI horn maintains near-constant horizontal directivity above 2kHz. Each speaker is bi-amplified (125W LF + 25W HF), while USB, optical, balanced analog, AirPlay 2, Chromecast, Bluetooth and 24/192 wired interconnect make this an unusually complete system. Grilles caused no meaningful response penalty.
Cons: The limiter becomes conspicuous around 96dB: Erin measured about 8dB lost near 50Hz at the highest drive and achieved roughly 93dB unweighted at 2m in-room, so this is a near/midfield system rather than a high-output theater speaker. A baffle discontinuity produces a 1–2kHz directivity mismatch that cannot be corrected uniformly in the vertical plane; stay within about +/-5° of tweeter height. Soundstage depth and layering trailed the KEF Reference 1 Meta, and wireless speaker linking caps resolution at 24/96.
Full JBL 4305P review and specifications →
| Amplification | 300W system: 125W LF + 25W HF per speaker |
|---|---|
| Bass Extension (-3dB) | 45Hz (measured, Erin's Audio Corner) |
| Dimensions | 13.2H x 8.3W x 8.8D inches |
| Drivers | 5.25-inch pulp woofer; 1-inch annular compression driver |
| Maximum Output | ~93dB at 2m in-room before limiting (measured, Erin's Audio Corner) |
| Sensitivity | Not applicable (active DSP loudspeaker) |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons