The KH 310 carries a solid reputation in mixing and mastering rooms: an honest, compact three-way that does not lie about what you feed it. Neumann now moves it forward with the KH 310 II and adds a newcomer, the KH 350, built for larger rooms and immersive setups. Two speakers with near-identical drivers, split by their cabinet philosophy.
Same drivers, two cabinets
Behind the baffle, both models share the same hardware: an 8.25-inch woofer (300W), a 3-inch dome midrange (160W) and a 1-inch tweeter (125W), for a three-way system totalling 585W, with crossovers at 700 and 1,700 Hz. The deeper change, invisible on the spec sheet but audible in the dynamics, is the move from Class-AB to Class-D amplification: more efficiency, so more level and more headroom before clipping, without a bigger heatsink.
Where the two diverge is air volume. The KH 310 II keeps the sealed cabinet and soft-dome midrange of the KH 310, in identical dimensions: it drops into an existing room with no reshuffling. Its argument is roughly 5 dB more headroom than its predecessor, at the same size. The KH 350 swaps the sealed box for a much larger bass-reflex design, mounted vertically, reaching down to 27 Hz and delivering about 2 dB more between 50 and 100 Hz. A wider MMD waveguide also opens up the sweet spot.
KH 310 II or KH 350: which for which room?
The split is clear. The KH 310 II remains the analytical nearfield par excellence: sealed cabinet, damped and predictable low end, ideal up close in a treated room. The KH 350 positions itself as a more compact, more affordable take on the flagship KH 420: it targets medium-to-large rooms and immersive installs, where you need low end that holds and a wider listening spot.
| Key point | KH 310 II | KH 350 |
|---|---|---|
| Cabinet | Sealed | Bass-reflex |
| Low end | Damped, precise | Down to 27 Hz |
| Use case | Nearfield in a treated room | Medium/large rooms, immersive |
| Indicative price | $2,999 | $3,599 |
DSP, digital inputs and room calibration
Both monitors carry a 32-bit DSP signal path, with a balanced analogue XLR input and a digital AES3id input on BNC, plus an output to daisy-chain a second speaker. An RJ45 port ties them to the MA 1 automatic alignment system: that is what measures the room and corrects the response, the real lever when you drop a set of monitors into a room that is not perfect. That digital input and calibration make the most sense in immersive production, where you align several speakers around the listening spot, a job where a reference clock and a consistent fleet matter as much as any single driver.
Neumann is joining a broader shift here: the studio monitor is becoming a controlled object, as we saw with the KRK V-Series Five going DSP or the free EVE Audio Origin software. The difference at Neumann is that the DSP serves neutrality and room integration first, not gimmicks.
Price and availability
The KH 310 II is listed at $2,999 (about 2,979 euros) each, the KH 350 at $3,599 (about 3,579 euros) each, both shipping now. That is the expected price of a reference monitor: a workshop choice, not a stopgap. One reminder before you reach for the card: in an untreated room, even the best speaker lies to you, which is why this purchase belongs next to real acoustic treatment.
My take
The KH 310 II was overdue: keeping the old cabinet dimensions and gaining 5 dB of headroom through Class-D is exactly the quiet update already-equipped studios were asking for. Nothing to rebuild, just more margin. The KH 350 is the real news: it plugs the gap between the KH 310 and the flagship KH 420, and its digital input paired with MA 1 calibration makes it a serious immersive candidate. A bass-reflex low end needs a room that welcomes it, but the payoff is real. At this level of neutrality, the question is no longer the speaker: it is the room.
