Compare Denon Perl Pro True Wireless Earbuds vs Bose QuietComfort Ultra Earbuds (2nd Gen)

ANC effectiveness is usually rated good but not class-leading; it can handle commute rumble well, yet several reviewers say Sony/Bose options suppress more, especially in the upper ranges. Noise cancelling and awareness modes are often limited in fine control, with some reviews noting on/off style behavior and few intensity tweaks compared with competitors.

Noise cancelling is repeatedly described as class-leading, with especially strong suppression of engine rumble and broad-spectrum everyday noise; a few reviews note minor hiss or occasional artifacts with sudden loud impacts, but overall performance remains top tier. Adjustability is strong via app modes and sliders, including custom levels and adaptive behavior (such as smoothing spikes), though some mode limitations and UI quirks are mentioned.

Android compatibility is good overall, and Android users with aptX-capable Snapdragon devices can get the most from Lossless/Adaptive modes; on other phones it still works well but with fewer codec benefits.

Android support is repeatedly framed as a strong use case, with modern Bluetooth features and higher-quality codec options that cater well to Android ecosystems.

The companion app is feature-rich for personalization, EQ, control mapping, and updates, but some sources mention slow loading or occasional instability, and several note it is effectively required to get full value.

The Bose app is generally seen as essential and functional for modes, device management, and settings, though some workflows (like mode creation) can feel limited or slightly confusing.

aptX support is a highlight, with repeated mentions of aptX Adaptive/Lossless (and sometimes aptX Voice) as a key advantage for compatible Android devices.

aptX Adaptive (including higher-quality variants cited by reviewers) is a key advantage versus some rivals for Android listeners who want better Bluetooth audio performance when supported by their phone.

Video latency is generally reported as well controlled, with reviewers noting little to no audio-video sync issues during typical streaming and YouTube viewing.

Audio/video sync is usually fine for casual viewing and even editing for some users, but multiple comments suggest latency is not ideal for competitive gaming or fast-reaction play.

Bass is frequently praised as impactful and well controlled, with Immersion mode letting you add heft without obvious bleed; a few listeners still find the default or certain profiles bass-light or overly sculpted.

Bass is consistently described as deep, punchy, and satisfying; some listeners consider it aggressive or dominant, especially out of the box.

Battery life is marketed as long, but real-world reports vary, with at least one standardized test landing closer to about six hours; most still consider it adequate for daily use.

Battery life is consistently called average for the category: typically around 6 hours with ANC, dropping with immersive/spatial modes, and supported by multiple case recharges.

Bluetooth stability is mostly strong with quick reconnects, though at least one review reports occasional stuttering in specific conditions.

Bluetooth stability is generally reported as solid across iOS and Android devices, with few or no dropouts in typical use, though some reviewers mention earlier-gen complaints and suggest toggling certain features if problems appear.

Build quality is generally viewed as solid and premium-feeling, with durable housings and a well-made overall package.

Earbud build quality is generally considered premium, with durability expectations aligned to the price; the case gets more mixed feedback on feel and refinement.

Controls are easy to learn and include useful gestures (notably swipe volume), yet multiple reviews mention finickiness and accidental activations; the ability to disable touch controls is an important mitigation.

The charging case is often described as somewhat bulky but generally sturdy with strong magnets; a few comments mention hinge/handling quirks.

The case is frequently described as bulky and less premium-feeling than the earbuds themselves; some reviewers also note the buds can be awkward to retrieve.

Charging is a strong point with fast-charge support and both wired and wireless options, though a small number of users report the case can get warm on a wireless pad.

Charging is a Gen 2 strong point thanks to wireless charging support, plus fast top-ups via the case; a few notes suggest wireless coil placement can be finicky on some pads.

Codec support is broad, including aptX Adaptive and aptX Lossless alongside AAC/SBC; the main caveat is that benefits depend on having a compatible source and LDAC is missing.

Codec support is a highlight for many reviewers, especially for Android users, with modern high-quality options noted alongside broad device compatibility.

Long-wear comfort is highly personal: some find the fit secure and comfortable, especially with wings, while others report pressure, heat, or discomfort due to the large shells.

Comfort is widely praised for long sessions, especially once tips and stability bands are dialed in; a consistent caveat is that the shell size may not suit the smallest ears.

Design is distinctive and polarizing: the large circular faceplate stands out, but many note the buds are physically big and may look or feel awkward in smaller ears.

Design is polarizing: many like the sleek, modern look, but the buds are visually and physically large, which can be a problem for smaller ears.

Ear tip options are generous, typically including several silicone sizes plus at least one foam set, which helps comfort and isolation when matched correctly.

Tip and wing options are helpful for achieving a strong seal, but multiple reviews note the included range is adequate rather than expansive given the premium price.

EQ options are strong for the category, typically including a 5-band ProEQ plus an Immersion bass slider to fine-tune tonality after personalization.

EQ customization is a frequent criticism: it is typically described as a basic 3-band tool with limited precision, which may frustrate listeners trying to meaningfully reshape the tuning.

Frequency response accuracy is divisive: some praise a balanced, natural tuning once updated, while others cite measured or perceived tonal issues out of the box that may require firmware and EQ.

Included accessories are a highlight, with multiple tip sizes, foam options, and stabilizing wings helping users dial in fit and seal.

Accessories commonly include multiple tip sizes and stability bands plus a charging cable; a few reviewers wish for extras like more sizes or a longer cable.

Instrument separation and imaging are commonly highlighted as a standout, with precise placement and clean layering across busy mixes.

Instrument separation is repeatedly rated as strong, helping busy tracks stay organized and making details easier to pick out.

LDAC is repeatedly called out as not supported, so Android users who rely on LDAC for high-bitrate Bluetooth may prefer alternatives.

Clarity at higher volumes is typically strong, with multiple sources noting low distortion and intelligible detail even when played loudly.

At higher volumes, clarity generally holds up well according to multiple impressions, though overall tonal preference still depends on how you feel about the bass-forward tuning.

Noise and wind reduction on calls is frequently reported as effective, helping keep speech understandable in busy or windy environments.

Noise reduction for calls is frequently praised (including AI-style voice isolation), yet a minority of measurements-based reviews report that wind and background sound can still bleed through depending on scenario.

Call quality is generally above average, with voices described as clear and intelligible; a few reviewers still note slight processing or that top rivals edge it out.

Call quality is widely reported as improved versus earlier generations, often sounding clear and intelligible; however, some tests still find it can struggle in very windy or extremely noisy environments.

Midrange is generally clear and present, but can sound forward or radio-like depending on the AAT profile and firmware, so some users prefer minor EQ adjustments for balance.

Midrange presentation is generally clear enough for vocals and instruments, but opinions vary: some hear warmth and natural tone while others cite recessed or uneven mids that can affect certain voices.

Multi-platform use is supported across phones and computers, but fidelity and feature access can vary by platform, with iOS often limited to AAC and Android benefiting more from aptX.

Cross-platform use is broadly positive across phones, tablets, and computers; iOS works well, though several reviewers still note Apple ecosystem extras remain a separate advantage for AirPods users.

Multipoint connectivity is a consistent win, with reviewers reporting reliable dual-device pairing and fast handoff between phone and computer/tablet.

Multipoint is a meaningful quality-of-life feature and is mostly described as seamless for switching between two devices, with occasional notes that pausing one stream before starting another helps.

Passive isolation depends heavily on getting a good seal; with the right tips, attenuation is described as decent, but it is not the main selling point versus active cancellation.

No summary yet.

Portability is mixed: the case is pocketable but noticeably larger than key competitors, and runners often find it inconvenient to carry during workouts.

Personalized AAT profiles can produce dramatic, often positive changes, but results vary by listener and tips; some profiles trade a sense of spaciousness for extra punch or focus.

Preset EQ profiles are described as basic and not always effective at fixing core tuning preferences, especially for listeners sensitive to boosted bass or treble.

In-ear sensors for auto play/pause are commonly mentioned and generally work as expected, with options to change or disable behavior in the app.

In-ear detection and related sensors are supported and configurable; at least one review suggests turning detection off if it contributes to unwanted playback behavior or stutters in edge cases.

Setup and daily usability are good once configured, but some reviews describe the experience as less polished than rivals because controls and tuning can require initial tinkering.

Setup is usually straightforward, but several reviews emphasize the app is effectively mandatory for fully managing features like multipoint, modes, shortcuts, and certain tuning behaviors.

Sound quality is the main strength: many reviews describe a clean, low-distortion, spacious and highly detailed presentation, especially after Masimo AAT personalization and/or EQ tweaks, though a minority found stock tuning or earlier firmware disappointing.

Overall sound is widely praised as rich, engaging, and detailed, though it is not tuned for strict neutrality; a few reviewers find the stock profile too boosted at the extremes and harder to correct due to limited EQ.

Soundstage is widely described as unusually wide and open for true wireless, with good spacing; a few reviews note it can feel a bit flatter in depth compared with the very best rivals.

Soundstage is commonly described as roomy and spacious for earbuds, with immersive modes able to expand the sense of space further (sometimes with tonal side effects).

Spatial audio gets mixed reactions: some find it immersive and bubble-like, while others call it subtle or underwhelming, and it is typically not head-tracked.

Spatial/immersive audio features are robust and can sound more natural than many implementations, but not everyone prefers the processing, and it typically reduces battery life.

Stability is usually good when the right tips and wings are used, though some users report slight movement during chewing or vigorous motion without added support.

Fit security is a major strength thanks to stability bands/wings, with several reviews calling them suitable for workouts and even running, though some users mention footstep thud in ANC mode.

Touch controls are commonly described as responsive and highly customizable, with reliable gesture detection and audible feedback.

Touch responsiveness is generally strong and often praised for quick gesture recognition, but sensitivity can lead to accidental triggers during fit adjustments or certain activities.

Transparency or social mode is usable but mixed: some call it smooth and subtle, while others find it less natural, occluded, or slightly artificial versus AirPods-class passthrough.

Transparency/Aware mode is generally clear and natural, with useful loud-spike handling in some implementations, but several reviewers still place it behind the very best competitors and note occasional hiss or wind sensitivity.

Treble tends to be detailed and airy, but reports vary from smooth and controlled to tinny or over-sharpened on older firmware or specific personalized profiles.

Treble is often described as crisp and detailed without obvious harshness for many, though some reviews report boosted regions that can fatigue sensitive listeners and note limited EQ control to tame it.

USB-C charging is consistently supported and frequently mentioned as the standard wired option.

USB-C charging is standard and widely appreciated, with fast-charge behavior commonly referenced for quick listening time boosts.

Voice assistant integration is supported through touch controls, with reports of common assistants working reliably when mapped.

Voice assistant support is present via shortcut customization, with practical use reported (including Google Assistant), though it is not typically positioned as a headline differentiator.

Volume output is often described as louder than average with plenty of headroom, useful for dynamic music and noisy environments.

Volume output is frequently described as loud and satisfying, with enough headroom for travel and commuting environments.

IPX4 water and sweat resistance is consistently noted, making the earbuds suitable for light workouts and rain, though not for submersion.

An IPX4 rating is repeatedly cited as sufficient for sweat and light rain, appropriate for workouts but not for full submersion scenarios.

Weight comfort is a recurring tradeoff: the earbuds are heavier and more noticeable than many rivals, which can cause fatigue for smaller ears.