Compare Nothing Headphone (1) vs Sennheiser HDB 630 Wireless Over-Ear Headphones

ANC is broadly considered strong for the price and effective for travel/commuting, but it is usually ranked a step behind the best from Sony/Bose/Apple, especially for voices or tougher scenarios. Noise control modes and adjustability are a highlight: reviews repeatedly mention multiple ANC levels/adaptive behavior and the ability to map controls to switch modes.

ANC performance is generally rated good to very good, especially for low-frequency rumble, but usually a step behind the strongest Sony/Bose/Apple implementations. A minority of takes place it closer to the leaders, while others call it only average for the price. ANC is highly adjustable through the app, with adaptive and manual control plus optional wind-related processing, making it easy to tune for different environments.

The Nothing X app is repeatedly described as one of the best parts of the experience, with feature access, customization, and settings that help compensate for default tuning.

The Smart Control Plus app is repeatedly called a standout, bundling EQ, ANC, connection management, firmware updates, and extras like sound zones and find features. A few reviewers mention occasional glitches, especially when the dongle is connected.

aptX family support is frequently cited as a major advantage, and the included dongle helps enable higher-quality aptX links on devices that otherwise lack them.

Several reviews mention low-latency or gaming modes and head-tracking features; real-world A/V performance is generally positioned as competent, not a class-leading differentiator.

Latency varies by device and mode. With the dongle, it is often good for movies and casual gaming, but several reviews note it is not truly esports-grade and real-world results may sit closer to typical Bluetooth latency.

Bass is usually described as controlled and textured rather than skull-rattling, with bass-enhancer tools available; some reviewers still want tighter tuning out of the box.

Bass is typically tight and controlled rather than boosted. Some call it punchy and physical, while others describe sub-bass quantity as lean; bass boost and EQ can add weight, but pushing hard can thicken or muddy the presentation.

Battery life is a consistent highlight, with many reviews citing long runtime (often around 35 hours with ANC and far more without) and strong real-world endurance. Replaceable battery support is generally weak, with at least one review calling out a non-user-friendly internal battery design.

Battery life is consistently excellent: many quote around 60 hours with ANC, and measured tests still land in the low-to-mid 50s. Hi-res modes and dongle use can reduce runtime but remain strong for the class.

Bluetooth stability is generally good with modern pairing features, though a few reviews mention occasional dropouts depending on environment or device.

Bluetooth connectivity is mostly stable once paired, with occasional quirks around device switching and initial dongle pairing on some setups.

Build quality is generally seen as solid and premium-feeling for $299, though some reviews note more plastic than expected or worry about long-term cosmetic wear.

Build quality is generally solid, but multiple reviews note that materials feel more plastic than premium for the price, and a few mention creaks or rattle.

Physical controls (roller + paddle + buttons + power switch) are a major highlight for tactility, but a few reviews mention learning curve, finicky behavior, or coarse volume steps.

Physical controls are minimal and straightforward, with most interaction handled by touch. Some reviewers wish the lone button were mapped to a different shortcut.

Included cables are generally viewed as fine, though at least one review notes limitations (such as a 3-pole 3.5mm cable that does not carry mic).

Included cables are generally considered useful and of decent length and quality, though a few nitpick terminations or the lack of inline mic support on analog.

The case is usually described as sturdy and protective with space for cables, but multiple reviewers call it large or mention zipper/material quirks.

The carry case is widely praised as sturdy and well-organized with pockets for cables and the dongle; size is the primary drawback.

Fast charging is frequently praised, with multiple reviews citing a short top-up delivering hours of playback; full-charge times are generally described as typical.

Charging is frequently praised for speed, with several reviews citing around 7 hours of playback from a 10-minute top-up and roughly 1.5-2 hours for a full charge.

Clamping force is commonly described as secure without being overly tight, though individual fit can vary and some users still feel pressure over time.

Clamping force is usually described as moderate and improved versus Momentum 4, helping stability without feeling overly tight. Fit-dependent seal changes can still affect comfort and tonality.

Codec and connection support is repeatedly highlighted as a strength, with common mentions of SBC/AAC/LDAC and both USB-C and 3.5mm wired options.

Codec and input support are broad: Bluetooth 5.2 with modern aptX options plus wired USB-C and analog. Not every premium codec is supported everywhere, but overall flexibility is a key selling point.

Comfort is often rated good-to-very-good for long sessions, but the weight and occasional headband/pad pressure points mean not everyone finds it as effortless as the lightest competitors.

Long-session comfort is generally strong thanks to thick padding and moderate clamp, but people with larger ears, heat sensitivity, or shallow-pad discomfort may fatigue sooner.

Design is consistently described as distinctive and polarizing, with many praising the transparent, cassette-like aesthetic and premium look for the price.

Design is understated and professional with matte black and subtle accents. Some appreciate the minimalist look, while others find it plain or less premium-looking than similarly priced rivals.

Having both USB-C audio and a 3.5mm option is repeatedly praised for flexibility, especially for laptops, planes, and modern phones.

The BTD 700 dongle is valued for enabling better codecs (especially for iOS), improving perceived resolution, and offering lower-latency modes. Setup can be finicky, the protruding plug raises durability concerns for some, and calls or app behavior may worsen in dongle mode on certain devices.

Ear pad comfort and seal are regularly praised, though some reviews mention thinner cushioning than expected, heat buildup, or pressure on certain ear shapes/accessories.

Earpads are frequently described as thick, soft, and good at sealing for isolation. The tradeoff is increased heat retention during longer sessions.

Cups generally rotate to lie flat, which helps neck-wear and packing, but the design can cause the squared corners to bump or rattle against each other.

Swivel range helps the cups lay flat for storage, but one reviewer notes the rotation can be so free that small asymmetries in fit may affect tonal balance.

EQ customization is a defining strength: multiple reviews highlight an advanced, multi-band/parametric-style EQ (often with Q control) plus shareable presets/QR codes.

Equalizer tools are a highlight: a five-band parametric EQ with A/B bypass enables precise tuning that can meaningfully tailor bass and treble without third-party apps.

Find My-style features are generally limited to making the headphones play a sound, which helps for nearby locating but is not a full tracker replacement.

Measured and subjective impressions frequently point to a non-neutral stock response (often described as dark), with EQ being the practical path to a more accurate balance.

Several reviewers highlight target-curve or reference-leaning balance and good tonal accuracy. Fit and seal still matter, with small positioning changes affecting bass and lower-mid response.

Headband adjustment works smoothly for most, but at least one review dislikes the adjustment ergonomics and others wish for more headband padding.

Headband adjustability is typically smooth and offers enough range to dial in fit, contributing to stable wear.

Included accessories are unusually generous for the category: the dongle, multiple cables, adapters, and a robust case are common value-add callouts.

Instrument separation is often praised as solid or good once the tonal balance is corrected, though some reviewers still find complex mixes can feel crowded compared to top rivals.

Instrument separation and layering are recurring strengths, helping dense mixes stay intelligible and improving localization, especially with higher-quality sources.

LDAC support is consistently called out across reviews and is a core part of the product’s high-res pitch for compatible Android devices.

At higher volumes, several reviewers report low distortion and clear playback, though ultimate refinement and dynamics are not always on par with premium flagships.

At higher listening levels, most impressions suggest the sound stays composed and low in audible distortion. A major caveat is that hands-free call modes on some platforms can drop audio bandwidth and make music sound noticeably worse.

Mic noise reduction is usually strong for steady noise and wind, but some reviews report aggressive noise gating or weaker handling of echo/reverberant rooms.

Noise reduction for calls is generally competent, keeping speech intelligible in moderate noise. Very loud environments and mode changes can still reduce clarity.

Call quality is often described as clear and workable, with some reviews praising voice pickup in noisy streets; others call it merely average or slightly robotic compared with top rivals.

On standard Bluetooth, most reviewers report clear voice pickup suitable for work calls. Using the dongle or triggering hands-free profiles on certain platforms can degrade call audio or music quality, so results depend heavily on device and mode.

Midrange performance varies by tuning: vocals can sound clear and forward after tweaks, but several reviews note too much lower-mid presence or a dull/veiled midrange on default settings.

Midrange performance is consistently praised for clean, realistic vocals and strong detail retrieval. A couple reviewers note a bit of forwardness around 1-2 kHz that can sound slightly shouty depending on fit and seal.

Multi-platform use is a core strength thanks to Bluetooth plus USB-C and analog options, with the dongle helping iOS users access higher-quality codecs.

Multipoint is commonly cited as supported and functional, enabling quick switching between two devices; reliability feedback is mostly positive.

Multipoint use (two devices) is supported and often works well, but there are limitations when mixing the dongle with other connections and occasional reports of source confusion.

Passive isolation is consistently strong thanks to a good seal and memory-foam style pads, meaning ANC has a solid foundation in many real-world environments.

Passive isolation is above average thanks to thicker pads and a strong seal, helping even before ANC is engaged.

Portability is a weak spot versus foldable rivals: cups rotate flat but the headphones do not fold up, making the carry footprint and case bulkier.

Portability is mixed: cups lay flat but the headphone does not fold inward, so it takes more space than some travel rivals. The case is protective yet can be bulky.

Preset profiles and simpler EQ tools are generally helpful, but several reviewers still prefer custom EQ to get the best tonal balance.

Preset EQ profiles and quick toggles like bass boost are generally effective and easy to use. Power users still prefer the parametric EQ for more surgical control.

Replaceable earpad support is mixed: some sources mention pads can be removed or obtained via customer service, while others say replacement availability is unclear.

Wear-detection and other sensors work well for many users, but some reports mention inconsistent behavior on specific devices (for example, desktop pairing scenarios).

Wear sensors add convenience (auto play/pause, auto-on), but sensitivity can cause accidental wake-ups for some; most note these features can be disabled.

Surface oils and cosmetic marks can show up on the materials, with some reviewers noting it wipes off easily but is not especially resistant to smudging.

Smudge handling is mixed: matte cups are often described as fingerprint-resistant, but some materials (notably the headband on some units) can pick up grease and grime easily.

Setup is usually straightforward thanks to modern pairing features, though a few reviews note hidden settings or small/hard-to-find pairing controls.

Setup is usually straightforward, but dongle pairing steps and occasional app quirks can add friction. Some advanced features require extra steps (like enabling specific audio modes) depending on device.

Sound quality is widely seen as good hardware with polarizing default tuning: some hear clean, balanced clarity, while many describe the stock sound as dark/flat or a bit compressed until EQ is applied. Wired listening over USB-C and/or 3.5mm is frequently mentioned; some reviewers note slightly improved clarity when wired, but not a dramatic transformation.

Across reviews, sound quality is the headline: balanced, highly detailed, audiophile-leaning tuning that competes with top wireless flagships and scales up with the dongle or USB-C. A few reviewers find it less instantly exciting than bass-boosted rivals, but overall fidelity is widely praised. Wired playback (especially via USB-C) is often cited as the cleanest, most resolving path. Analog input works too, but the headphone typically still relies on internal DSP and battery power.

Soundstage is generally not class-leading; multiple reviews call it narrower or less expansive than Sony/Apple competitors, even if separation can be decent after tuning.

Soundstage is considered roomy for a closed-back wireless, with better depth and separation than Momentum 4; crossfeed and the dongle can change the sense of space. It still cannot match open-backs, and a few listeners describe it as more in-head than speaker-like.

Spatial audio is included and often paired with head tracking, but opinions on its usefulness vary widely; several reviews call it mediocre or not worth using for music.

Spatial audio as a dedicated virtualized mode is often noted as absent; instead, Sennheiser emphasizes EQ and crossfeed-style processing for older mixes.

Sustainability signals are limited in reviews: some note repairability steps (like pad access) but also a lack of recycled materials or overt eco focus.

Touch controls are feature-rich, but experiences vary widely: some find them refined and responsive, while others report misreads or frustration with pinch-based ANC gestures.

Transparency mode is generally usable and fairly natural, but a recurring complaint is that the wearer’s own voice can sound boomy and/or the passthrough can be less airy than the best implementations.

Transparency mode is typically described as usable and convenient, with adjustable levels and quick toggles. It is rarely considered best-in-class for naturalness, and some reviewers rate it merely adequate.

Treble is a common critique in default mode, with multiple reviewers calling it muted or lacking sparkle; EQ can restore more air and bite for cymbals and vocals.

Treble is often described as detailed and generally well-controlled. Opinions diverge: some hear extra energy up top or a dip in the mid-treble that can make the presentation feel a touch closed-in, and sensitivity varies by listener and fit.

USB-C is a frequently praised feature because it supports charging and USB-C audio, adding modern wired flexibility.

USB-C is a versatility highlight for both charging and wired digital audio, and is frequently cited as the cleanest connection option.

Voice assistant hooks and programmable button behavior are widely mentioned, with extra integrations for Nothing phones and more basic assistant triggering on other devices.

Voice assistant integration is supported and typically works as expected via a dedicated button or gesture.

Volume output is generally adequate, but at least one review notes limited headroom and less precise volume stepping than some competitors.

Volume output offers solid headroom and gets loud enough to help overcome moderate ambient noise. Heavy EQ boosts can reduce available peak volume due to protective preamp behavior in the app.

IP52 is a standout feature in this category and is repeatedly praised as practical for sweat and light splashes, even if it is not a high waterproof rating.

No official water or sweat rating is typically noted, so these are better treated as commute and travel headphones rather than workout gear.

At ~329g, weight is noticeable: reviewers often say it’s lighter than AirPods Max but heavier than Sony/Bose alternatives, which can affect long-wear comfort.

At roughly 311g, weight is noticeable but often well-distributed. Some still prefer lighter competitors for all-day travel comfort.

Xbox support is commonly described as limited, with at least one review noting the dongle route does not work on Xbox.