Short answer: the Kii THREE. It ranks #3 of 66 powered bookshelf speakers by sound quality at $14000; the JBL M2 Master Reference Monitor ranks #34 and costs $15000, which makes this an easy call rather than a real tradeoff.
What the JBL M2 Master Reference Monitor offers: Flagship quasi-active two-way with a 15-inch 2216Nd woofer and D2 compression driver crossing near 800Hz through a large Image Control Waveguide. Watch for: The required bi-amplification/DSP ecosystem is expensive and complex; Erin’s Crown I-Tech 5000HD had fans loud enough that he moved it to another room for measurements.
What the Kii THREE offers: A genuinely full-range active cardioid monitor. Watch for: The protection limiter becomes evident above approximately 96dB at 1m; bass-heavy material can overdrive the compact woofers with an audible plop even though many tracks exceed 100dB at a four-meter seat.
Buy the Kii THREE. It ranks higher for sound quality than the JBL M2 Master Reference Monitor and costs less, so there is no real case for the other one.
Specifications Side By Side
| JBL M2 Master Reference Monitor | Kii THREE | |
|---|---|---|
| Price | $15,000/pair | $14,000/pair |
| Ranked | #34 of 66 in Large Size Powered Bookshelf Speakers | #3 of 66 in Large Size Powered Bookshelf Speakers |
| Bass Extension (-3dB) | 34Hz (measured, Erin’s Audio Corner) | 28Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 21.0Hz (measured, Erin’s Audio Corner) | 20.5Hz (measured, Erin’s Audio Corner) |
| Sensitivity | Not applicable (externally bi-amplified DSP system) | Not applicable (active DSP loudspeaker) |
| Drivers | 15" 2216Nd woofer; D2 compression driver in Image Control Waveguide | Four 6.5" woofers; 5" midrange; 1" waveguided tweeter |
| Crossover | 800Hz active DSP | - |
| Max SPL | 123dB manufacturer specified | - |
| Weight | 130 lb each | 42 lb each |
| Amplification | External two-channel amplification and JBL DSP tuning required | Six Ncore channels, 1,500W total per speaker |
| Radiation | - | DSP-controlled cardioid above approximately 70-90Hz |
| Dimensions | - | 15.7"H x 7.9"W x 15.7"D |
| DSP | - | Yes; boundary, contour, phase-exact and low-latency modes |
Related Speaker Comparisons
A few more comparisons worth a look in the same class:
- Genelec 8351B vs Genelec 8361A
- Genelec 8351B vs Neumann KH420
- Genelec 8351B vs SHIVAUDYO Point Zero
- JBL M2 Master Reference Monitor vs SHIVAUDYO Point Zero
- Kii THREE vs SHIVAUDYO Point Zero
Prices on this page were last checked September 4, 2026 at 6:09 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
JBL M2 Master Reference Monitor: $15,000/pair JBL Professional Dealer Locator eBay
Pros: A high-output specialist: Erin’s low-distortion and compression tests support considerable dynamic capability, beyond what a single preference score captures. Measured -3dB extension is 33.7Hz. The large woofer and waveguide are particularly useful for greater listening distances.
Cons: Its 4.1dB response span from 300Hz to 5kHz and 5.67 ideal-subwoofer score do not support a top tonal-accuracy ranking. It requires the correct external amplification and DSP rather than a simple built-in amplifier. The very large cabinet, installation cost and possible amplifier fan noise make it impractical for most desks.
Full JBL M2 Master Reference Monitor review and specifications →
| Amplification | External two-channel amplification and JBL DSP tuning required |
|---|---|
| Bass Extension (-10dB) | 21.0Hz (measured, Erin's Audio Corner) |
| Bass Extension (-3dB) | 34Hz (measured, Erin's Audio Corner) |
| Crossover | 800Hz active DSP |
| Drivers | 15" 2216Nd woofer; D2 compression driver in Image Control Waveguide |
| Max SPL | 123dB manufacturer specified |
| Sensitivity | Not applicable (externally bi-amplified DSP system) |
| Weight | 130 lb each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- JBL M2 Master Reference Monitor vs Genelec 8040B
- JBL M2 Master Reference Monitor vs JBL 708P
- JBL M2 Master Reference Monitor vs Klipsch The Nines
- JBL M2 Master Reference Monitor vs JBL 4305P
- JBL M2 Master Reference Monitor vs Genelec 8050B
- JBL M2 Master Reference Monitor vs Kali Audio IN-8 V2
- JBL M2 Master Reference Monitor vs Kali Audio LP-6 V2
- JBL M2 Master Reference Monitor vs Yamaha HS8
- See all 22 comparisons
Kii THREE: $14,000/pair Vintage King eBay
Pros: Exceptionally even measured balance: the 300Hz-5kHz response spans only 1.2dB, with preference scores of 7.06 standalone and 7.71 with an ideal subwoofer. Cardioid control reduces rearward low-midrange energy, while measured -3dB extension of 29.3Hz provides convincing full-range bass in a compact system.
Cons: Deep-bass output has limits: demanding low-frequency material at high levels can trigger compression or audible distress. The reviewer preferred a small treble reduction, so the high score is not a promise of ideal tonal balance for every listener. Linear-phase operation adds latency, and the system is expensive.
Full Kii THREE review and specifications →
| Amplification | Six Ncore channels, 1,500W total per speaker |
|---|---|
| Bass Extension (-10dB) | 20.5Hz (measured, Erin's Audio Corner) |
| Bass Extension (-3dB) | 28Hz (measured, Erin's Audio Corner) |
| DSP | Yes; boundary, contour, phase-exact and low-latency modes |
| Dimensions | 15.7"H x 7.9"W x 15.7"D |
| Drivers | Four 6.5" woofers; 5" midrange; 1" waveguided tweeter |
| Radiation | DSP-controlled cardioid above approximately 70-90Hz |
| Sensitivity | Not applicable (active DSP loudspeaker) |
| Weight | 42 lb each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons