![[Pre Order] Sennheiser HDB 630 Closed Back ANC Over-Ear Headphones $899 (RRP $999) + Delivery @ JB Hi-Fi](https://files.ozbargain.com.au/n/82/929782.jpg?h=31120a30)
Was doing a quick google after seeing all the reviews popping up, thought it was worth sharing, ends on 30/10/2025. I might grab these using a voucher. Looks like addictedtoaudio is also doing the same thing.
[Pre Order] Sennheiser HDB 630 Closed Back ANC Over-Ear Headphones $899 (RRP $999) + Delivery @ JB Hi-Fi
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Lvenomqo on 23/10/2025 - 07:01 jbhifi.com.au (141 clicks)
Last edited 23/10/2025 - 12:13 by 2 other users
Last edited 23/10/2025 - 12:13 by 2 other users
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oops i meant gift-card, have a $400 left over from my pixel 10, which gets it to a more stomachable price
Is this meant to beat the competition in noise cancellation headphones like Bose/Sony?
id imagine its fine, someone on reddit compared it to the xm4's. you're getting these for the audio quality though, not the ANC.
In the sound department? Absolutely. Neutral tuning, addition of the on-device PEQ and the included bluetooth dongle that comes with it make it three steps above the competition.
In everything else? Err… depends on personal preferences.
It still has the same plastic build and no folding hinge design as the Momentum 4. I liked the plastic build of the Momentum 4 since it made the overall unit very light compared to the Sony XM6 or the Bose Ultra. But if you are not into plastic build or need a folding hinge, then you won't like it.
In terms of ANC… basically the same as Momentum 4. Bose/Sony/Apple still has an edge here. But to be fair most ANC headphones are “good enough” for general use already so that also depends on your preference.
With all that said will I pay 899 to upgrade from my ok sounding Sony XM6? Nah. For me, ANC headphones are for outdoors and I would rather use my open back headphones for indoor listening anyway, and I really am not that much bothered by sound quality outdoors.
I personally only use wireless full size for flight, so ANC is top priority. Interesting that Momentum 4 isnt better that my old Sony XM2
Is it like bose ultra vs bose quiet comfort setup? I mean this vs M4?
Sennheiser have a history of steep discounts not long after release. I reckon these will be cheaper for Christmas hopefully. Pretty sure the HD660s2 also 999 RRP were down to $6xx within the year. The momentum 4s also came out at $549 and pretty quickly came down to $400 or just under.
Will very likely hit 35-50% off for sure, especially considering it’s using the Momentum 4 shell.
Will wait for the usual Sennhieser sale within the next 12 months. But these are on top of my list to replace my XM2.
Plastic build doesn't bother me. All 600 series are plastic.
Considering making the upgrade from my M4's and BTD 600.
Mainly used for meetings and PC gaming (with a desk mic).
Not sure if there's any upgrade to be had from the new 'Gaming' mode latency wise. Also the headset still defaults to HFP when Mic is activated no? Even with the BTD 700?
There is no way these don't perform almost identically to the Momentum 4's. They are basically just a refresh and the sound profile is almost identical but with different boosting which can you just achieve by EQ yourself.
Hands-Free mode is a fundamental limitation of Bluetooth. I have not seen any Bluetooth headphone which does not switch to the Hands-Free mode. I believe it would need to have separate Bluetooth transmitters for mic and output. You can disable Hands-Free telephony in Windows but will need to use something else for a mic. I believe Sennheiser now sells a plug-in USB-C mic for some headphones but I'm not sure if these use an independent transmitter or also switch to HFP.
Sennheiser themselves are claiming bare minimum that the driver is housed and dampened differently:
Versus the MOMENTUM 4, you will see a couple of differences but hear a much larger one—the slightly larger back volume makes room for some powerful acoustic treatments, namely a new magnet damper that tames upper-midrange and treble energy. An all-new protective acoustic mesh was selected for the front volume, with a light impedance that disappears from the audio path.
That, plus a new chipset. But they iterate on their drivers fairly regularly, and it's been ~2 years since the Momentum 4 released.
So in other words, it's the same speaker driver in other respects and the audio difference is within the range that can be EQ'd as proven by independent testing. At the end of the day, the component cost is still basically the same as Momentum 4 and therefore the quality is you get what you pay for. In fact, Sennheiser's own frequency graphs prove this. Most of the difference in frequency response is about 2dB or less, so barely perceptible, and not more than 5-6dB in bass.
There is not $450 of added RRP here.
@Maker1: I'm not a fan of the current price, but the way Sennheiser iterates their drivers is slightly more complex than that. I'd say there's been other updates, but they just don't go into massive detail. The magnet dampener is a driver change in of itself.
EQ and frequency response are not the whole story of how sound works, you've got resonances and distortion, and you've got the ability of the driver to move correctly when generating sound, all of which contribute in ways that we don't fully measure today (multi-tonal distortion tests are not complex audio).
If the Momentum 4 is worth $250, this is worth $400 today IMO.
Performance wise everyone is saying they perform at an entirely different level to the M4's.
I'm pretty sure LE or LC3 codec support gets rid of HFP switching entirely, no? With 48kHz support on both channels at the same time. E.g. I think the XM6s can actually be used in voice comms without switching to HFP provided the transmitter provides LC3? I could be wrong though.
Those people are fools. If you paid almost double the RRP of the Momentum 4 for almost the same thing, you would believe it's an amazing change too. Sennheiser's own frequency graphs comparing the two show that the majority of difference is within 1-2dB being barely perceptible by those with perfect and trained hearing, with the only real change being in the bass.
These kinds of people exist on every product launch and in every hobby. So often there are the same idiots claiming that much cheaper products are xyz better than a more expensive product.
In terms of the codec LC3, you appear to be correct. However bear in mind that both transmitter and receive need to support the codec and therefore most devices and computers will not for quite some time. Then the operating system of the phone or PC at the driver level also needs to support switching to the codec.
@Maker1: The reviewers I trust say these changes are substantial, and the starting price - which I do not recommend people pay - reflects the nature of such a product in this market.
The difference here is that unlike B&W and Focal, Sennheiser have the ability to considerably drop price as production scales, and they will seek to bring in more budget-friendly iterations of this technology.
@jasswolf: That doesn't mean much. An audio reviewer relying on their ears is literally just "trust me bro". Do any of them receive promotional items, brand incentives or review units provided by an affiliate?
Regardless, the fact is that it's the same core driver as the Momentum 4 and the majority of the change in frequency response is an imperceptible difference according to Sennheiser's own marketing/testing materials. So… You can't be serious. Acknowledge the facts. There is no technology magic here, the production cost is about the same as the Momentum 4. There won't be any 'trickle down' or budget option.
I'm not saying they are bad headphones by the way… :)
@Maker1: This is like saying the HD 600 is the same is the 650, or the 660, 660 S2 and the 700 are the same: they're not.
I have enough of a grasp of their body of work and have heard enough of the headphones myself to know they are largely correct in their takes. I do not just nod along and go with the vibe.
Regardless, the fact is that it's the same core driver as the Momentum 4
It is an iterated design, that is not the same thing, that's not how physics works.
majority of the change in frequency response is an imperceptible difference according to Sennheiser's own marketing/testing materials
Wrong and wrong. Even if you think the only thing that can change is frequency response (wrong), a neutral closed back curve would reflect a greater than 2dB change in the treble and bass of the Momentum 4, which is clearly audible. Given the changes to the magnet, the driver behaviour is fundamentally altered and that cannot be produced through EQ alone, nor would DSP be necessarily capable.
@Maker1: Sennheiser includes a dongle in the box. Doesn’t matter if your device doesn’t natively support a codec, as long as you have usbc
@jaejae69: Yes it does matter. Both devices need to support a codec for the codec to work. The dongle supports the codec, the headphones do not. I don't understand how you could believe it works differently.
I just got my B&W Px7 S3 yesterday, how do these compare ?
These are better, but neither are worth the spend.
Assuming you're not on iPhone using AAC, the Px7 is better
https://www.avforums.com/reviews/sennheiser-hdb-630-wireless….
The fact Sennheiser thinks they can sell almost the exact same product as the Momentum 4 as brand new is craaaazy. Please don't give them your money. The sound profile is tested almost exactly the same and a Momentum 4 can be EQ'd.
These are so far behind other companies in terms of noise cancelling for which there is really no excuse for the price. The build quality is also not very good and that headband material is probably going to come apart in a few months just like every Momentum 4. Well, even worse now that it's PU.
How much can we get it down to with vouchers and gift cards?
Very much want after seeing reviews but it is basically double what my original budget was going to be haha