Bose QuietComfort 45 vs 700 UC: Which Noise Cancelling Headphones Are Better for You?

Bose has been at the forefront of noise cancellation technology for over 30 years. Since launching the industry‘s first noise cancelling headphones in 1989, the audio equipment company has strived to enhance the technology further with each new product release.

The Bose QuietComfort 45 and Bose 700 UC are two of their latest premium over-ear headphones featuring next-generation active noise cancellation. While both models promise an immersive listening experience cutting out ambient sound, they differ in design, features and overall performance.

We put these two noise-cancelling titans head-to-head to find out which is the better pick for you.

Overview of Bose‘s Noise Cancelling Legacy

The first noise cancelling headphones produced by Bose were named the QC1. Unveiled in 1989, these over-ear headphones utilized a breakthrough active noise reduction technology conceptualized by company founder Dr. Amar Bose.

Bose spent over a decade researching methods to reduce unwanted ambient noise that interrupted the music listening experience on airplanes. The QC 1 successfully cut extraneous noise by combining analog and digital electronic signal processing circuits.

The QuietComfort brand was born with the QC1. It aimed to provide both sound isolation from external noise as well as audio performance that could deliver clear music with deep bass.

Over the next 25+ years, Bose iterated on their noise-cancelling headphones adding enhancements like:

• QC 15 (2009) – Rechargeable battery for noise cancellation feature
• QC 25 (2014) – Significant improvements in ANC stemming from exclusive wave guides and improved Aware mode
• QC 35 (2016) – Wireless Bluetooth connection along with access to voice assistants
• QC 35 II (2017) – Support for Google Assistant in addition to Amazon Alexa
• 700 UC (2020) – Optimized for unified communications and video conferencing usage scenarios

The QuietComfort 45 launched in 2021 represents the latest leap for the iconic QuietComfort line. Next we‘ll see how they stack up against the video conferencing specialized Bose 700 UC.

Bose QuietComfort 45 vs 700 UC: Feature Comparison

From the table above, we can glean key info on how the headphones match up:

• Design: Both sport an over-ear closed back design optimized for noise isolation
• Core features: Offer industry-leading noise cancellation and wireless Bluetooth connectivity
• Battery life: QC 45 lasts slightly longer at 24 hours vs. 20 hours for 700 UC
• Voice assistant: 700 UC supports Alexa and Google unlike QC 45
• Mobile app: Only 700 UC gets additional customization via Bose Music app
• Pricing: 700 UC is more expensive at $399 versus $329 for QC 45

Next, we dive deeper into the factors you should consider when deciding between purchasing the QuietComfort 45 or 700 UC.

Comfort and Design

As over-ear headphones meant for prolonged wear, comfort is paramount. Both the QC 45 and 700 UC do not disappoint in this regard with plush earcups and adjustable headbands. However, there are some subtle differences in materials and overall aesthetics.

Bose QuietComfort 45

The QC 45 retains a very similar design blueprint to previous popular QuietComfort models. The synthetic protein leather ear cushions envelop around the ears creating a nice seal. The cushions include strategically placed vents to minimize ear heating during multi-hour listening sessions.

The glass-filled nylon headband feels lightweight and allows you to customize just the right fit. Overall, many user reviews praise the comfort with some specifically calling out the lack of clamping force compared to other over-ear ANC headphones.

It maintains a classic headphone silhouette offered in simple Triple Black or White Smoke color options. This gives it a slightly more understated look than the Bose 700 UC.

Bose 700 UC

Crafted from premium stainless steel and plastic, the Bose 700 UC makes a bolder style statement. The headband is sheathed in a soft-touch coating allowing its thin frame to flex and conform nicely. The synthetic protein leather on the ear cushions feel plush and avoid applying excess force on the ears.

Coming in Triple Black or Silver Luxe colors, the 700 UC has a more modern and sleek aesthetic. However, in terms of wearing comfort, most users found both models pleasant to wear for extended periods without experiencing fatigue or pain points like clamping.

So when it comes to comfort and design, the QC 45 leverages Bose‘s decades of expertise crafting over-ear headphones tailored for travel usage. But the 700 UC also delivers a comparable level of fit and finish. Ultimately, it comes down to whether you prefer the understated classic look or more stylish modern profile.

Verdict: Tie – both excel in comfort; choice depends on desired aesthetics

Sound Quality and Noise Cancellation

Premium noise cancelling headphones live and die by their audio quality and ANC prowess. With a $100+ price gap between them, expectations run high for both models.

Audio Performance

The Bose QuietComfort 45 produces well-balanced sound across different music genres. Many professional reviews praised the clear mids and non-boomy bass response. Vocals come through with clarity while the overall signature avoids harsh or tinny treble.

Bose tuned the drivers to deliver lifelike immersive audio. The soundstage gives music a spacious feel as if you‘re listening to a live performance. Whether you are playing acoustic folk tracks or bass-heavy hip hop, the QC 45 impresses with its vibrant warm audio.

Meanwhile, the 700 UC surprises with just how close it gets to matching the QC 45‘s audio fidelity. The sound profile delivers crisp detail and a wide soundstage. The bass hits but avoids muddiness. Much like its sister headphone, the 700 UC brings music to life across genres.

Some listeners might find the highs slightly more pronounced on the 700 UC. However, an adjustable EQ within the Bose Music app lets you tweak it to taste. Ultimately, unless you are an audiophile doing critical listening, you‘ll find both deliver excellent well-rounded audio.

Verdict: Tie – comparable audio enjoyment across genres

Noise Cancellation Capabilities

As pioneers of noise-cancelling tech for over 30 years, Bose sets sky-high expectations for blocking external sound. Both the QuietComfort 45 and 700 UC feature next-gen adjustable ANC to silence noisy environments.

The QC 45 packs a 6-microphone system applying AI-powered algorithms to hush ambient noise. A new Aware Mode lets in outside sound when you need it. Testers found the ANC highly effective at tuning out everything from chatter to airplane engine rumble. Vents in the earcups prevent occlusion making your own voice sound more natural.

Meanwhile, the Bose 700 UC takes things up a notch with an 8-microphone setup. The proprietary noise cancelling design gives you incredible control to mute distractions on demand. Eleven increment ANC levels allow you to transition from full isolation to complete external awareness.

Setting them head-to-head, the 700 UC has a slight edge at blocking unwanted noise across the spectrum from fellow passengers to industrial sounds. But the QC 45 still posts mightily impressive noise cancelling capabilities in their own right. For use in loud environments, you can rely on both to provide sufficient isolation.

Verdict: Slight win for Bose 700 UC with more effective noise blocking particularly in chaotic settings

Features and Connectivity

On paper, the Bose 700 UC pulls ahead on features largely due its focus on office and meeting usage. But the QuietComfort 45 holds its own packing connectivity and convenience to satisfy most mainstream consumers.

The Bose 700 UC justifies its higher price tag with some standout highlights:

• Voice assistant support for Amazon Alexa and Google Assistant allows for convenient hands-free control
• The Bose Music app unlocks an adjustable EQ plus presets to customize audio
• UC specialty features enhance call and video meeting audio quality
• Included Bose USB Link Bluetooth dongle ensures easy connectivity across devices

Meanwhile, the pared back QC 45 delivers core functionality:

• Multipoint Bluetooth allows pairing with two devices at once
• Physical button controls for music, volume and ANC tweaks
• Carrying case for portability
• 3.5mm aux port for wired listening

Unless you specifically need Alexa/Google access or plan to use them heavily for online meetings, the streamlined QC 45 gets the job done. However, I give this round to the Bose 700 UC for offering next-gen features that expand usage scenarios.

Verdict: Clear win for Bose 700 UC with modern amenities like voice assistant and unified communications support

Battery Life

With premium noise cancelling headphones, long battery life is non-negotiable. You want length listening sessions without constantly worrying about finding an outlet.

The Bose QuietComfort 45 delivers superior staying power with up to 24 hours of runtime per full charge. That ensures you can make it through multi-day trips without issue. Even just 15 minutes of quick charging provides nearly 3 hours of playback.

Meanwhile, the Bose 700 UC promises a respectable 20 hours on a single charge. So you‘ll get through a full day‘s use but might need to remember the USB-C charging cable for longer stints. The quick charge capability provides 2 hours of ANC listening from only 15 minutes of charging.

Thanks to its roomy battery capacity, this round goes easily to the QuietComfort 45. But the 700 UC still outpaces competitors with its fast-charging feature to prevent you from getting caught without tunes.

Verdict: Clear advantage QuietComfort 45 with industry-leading 24 hour battery life

Pricing and Value

With a $70 premium over the QuietComfort 45‘s $329 dollar price tag, the Bose 700 UC retails for $399. At first glance, that appears to make the QC 45 better value if core features like ANC and audio quality are on par.

However, keep in mind the Bose 700 UC justifies its higher cost with extras the average buyer may appreciate. Built-in Alexa/Google support, conference call-friendly features, and the mobile app‘s EQ customization enhance real world usage.

The QC 45 undeniably delivers better battery endurance – an attractive quality for travelers and commuters. Yet, its pared back controls and connectivity may ultimately leave some users wanting more amenities.

Ultimately, both premium noise cancelling models deliver lasting performance with their plush stable fit, rich immersive audio and stellar noise blocking. Unless you want those bonus smart features, I believe the QC 45 gives buyers more value per dollar spent. Yet, the 700 UC still outperforms similarly-priced competitors on overall quality.

Verdict: Slight value advantage for QuietComfort 45 at $70 less than 700 UC

Which Should You Buy: QuietComfort 45 vs 700 UC

For shoppers seeking premium noise cancelling over-ear headphones in 2023, both the Bose QuietComfort 45 and Bose 700 UC represent compelling options. You really can‘t go wrong with either thanks to their superb blend of audio fidelity, comfort and adjustable ANC.

However, some key factors may make one model better aligned to your needs and budget.

Buy the Bose QuietComfort 45 If:

• You want maximum noise cancelling headphone battery life
• Prefer physical control buttons over touch controls
• Like a more classic over-ear headphone design aesthetic
• Desire great sound at slightly cheaper price point

Buy the Bose 700 UC If:

• You‘ll use headphones heavily for calls and online meetings
• Want voice assistant support via Alexa and Google
• Plan to tweak audio through the mobile app‘s EQ
• Appreciate modern style and premium build materials

For most shoppers, I believe the Bose QuietComfort 45 hits the sweet spot blending performance, comfort and value. With up to 24 hours of battery life and enhanced Aware Mode for letting sound in when needed, it adapts well to real world scenarios.

However, professionals and remote workers will get more mileage out of the Bose 700 UC model and its focus on unified communications. Adjusting ANC levels on the fly to minimize background noise during video meetings is a huge perk.

At the end of the day, both headphone lines showcase why Bose sits at the top of the noise cancelling headphones game. Your decision ultimately comes down to budget, feature preferences and personal style.

Regardless if you want timeless over-ear comfort or next-gen amenities, Bose sets the gold standard for muteing the world to fully immerse in your music.