Note that this is a discontinued product. You may want to visit the brand's page here to browse their newer products.
What reviewers think
Bloggers and YouTubers have tried this product—so we've summarized their strongest opinions below. Links to full reviews follow.
Product Strengths
- Extremely comfortable IEM, disappearing immediately in the ear due to its slim, low-profile design.
- Very efficient and sounds good even without high quality amplification, performing well with just a smartphone dongle.
- Strong bass response described as awesome and one of the strongest in Sennheiser headphones, with a naturalistic, non-artificial sound signature.
- Good build quality and durable, with a para-aramid (Kevlar) reinforced cable.
- Good passive isolation, especially when using memory foam ear tips.
Product Considerations
- Stock ear tips may not provide a good seal for everyone, requiring tip rolling to find a suitable fit.
- Stock cable is stiff, not very pliable, and transmits movement/vibration to the earpieces.
- Recessed MMCX connector makes finding replacement cables difficult and expensive.
- Treble response is darker/relaxed, which may diminish clarity and 'air' for some listeners.
- Imaging and soundstaging can vary depending on the ear tips used.
Comparisons (according to reviewers)
- Vs Sennheiser 6XX or 560S: Full-size headphones sound better but are less convenient and may require amplification, while the IE 300 works fine off a phone.
- Vs Moondrop Blessing 2: Blessing 2 has better tonality based on some preferences, but the IE 300 is a great option with a more V-shaped, balanced sound signature.
- Vs Shure Aonic 3: Aonic 3 offer greater clarity, crispness, agility, and in turn, a snappier presentation.
Takeaway: The IE 300 is a comfortable and easy-to-drive IEM with a strong bass response and durable build, making it an enjoyable option for everyday listening. It is suitable for individuals seeking a fun and warm sound without the need for additional equipment.
All
IE 300
reviews

Manufacturer details
- Transducer principle: dynamic, closed
- Transducer size: 7 mm
- Frequency response: 6 Hz - 20,000 Hz
- Impedance: 16 ohms
- Total Harmonic Distortion: < 0.08 % (1 kHz, 94 dB)
Brand highlights
Taking a step back to look at reviewers' thoughts of the brand's entire lineup—not just this product—what stands out most is the following:
Select products
HD-559
- Positioning: Entry-level design focused on affordability and everyday listening needs.
- Description: Offers clear sound and comfortable design with a straightforward acoustic setup suitable for small rooms and casual music enjoyment. Compared to the HD-560S and HD-660S2, its basic performance and limited feature set make it a better fit for buyers with lower budgets and simple functionality needs.
HD-560S
- Positioning: Mid-tier model balancing cost and improved technical performance.
- Description: Delivers enhanced clarity and precision with a refined tuning approach that benefits home or studio use. When compared with the HD-559 and HD-660S2, it provides better sound detail while remaining accessible for buyers seeking moderate cost and practical functionality.
HD-660S2
- Positioning: Mid to high-level design crafted for a richer and fuller sound experience.
- Description: Offers a warmer sound signature with improved bass impact and a wider soundstage. Relative to the HD-560S and HD-800S, its technical enhancements and superior build quality justify the higher investment for users aiming for more refined performance without reaching the premium flagship tier.
HD-800 S
- Positioning: High-end open-back design intended for detailed, analytical listening applications.
- Description: Provides natural, transparent sound with a wide soundstage and precise imaging that benefits critical listening in controlled environments. Compared to the HD-660S2 and HD-820, it emphasizes technical accuracy and spatial detail.
HD-820
- Positioning: Premium closed-back design engineered for reference-class listening in isolated environments.
- Description: Features a unique closed-back design that merges open headphone sound characteristics with enhanced bass warmth and improved isolation, suited for quiet and nearfield environments. In comparison with the HD-800 S, it prioritizes sound isolation and versatility over the expansive open-air presentation.
Our take on the brand
Look inside the brand
Our interview with the brand
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Used
Sennheiser
What if you spend more?
Product Strengths
- Excellent fit and comfortable for many users, even for extended listening periods
- Very well-balanced and tuned sound signature, often described as a warm, mature, or safe Harman-ish tuning
- Smooth treble presentation, avoiding sibilance, sharpness, or fatigue, while still retaining detail
- Good bass performance for an all-balanced armature set, with nice punch and attack, though primarily focused on sub-bass
- Very good natural tonality and timbre, avoiding a metallic or unnatural sound often associated with balanced armatures
Product Considerations
- Soundstage and imaging could be better for the price, described as average and not particularly wide or holographic
- May lack a 'hook' or standout factor in its sound quality, some find it to be a more laid-back and less engaging sound
- The shells are quite big, which may be problematic for users with small ears
- The recessed 2-pin sockets could be designed better with a deeper fit
- May sound 'boring' at mid-to-low volumes, according to one reviewer
Comparisons (according to reviewers)
- Vs Moondrop S8: RSV offers a warmer and fuller sound with a more even midrange, while the S8 is leaner and more forward, with the S8 being more engaging overall
- Vs Dunu SA6: RSV has better bass quality, while the SA6 has a slightly more pronounced treble
Takeaway: The Soft Ears RSV is a comfortable and well-tuned IEM that delivers a balanced and enjoyable listening experience. It is particularly well-suited for those who appreciate a smooth, natural sound with excellent vocal reproduction.
Video review
Our take on the brand
Product Strengths
- Balanced to warm sound signature with ample bass that is present without overpowering the sound
- Sublime vocals, clear with even minor voice modulations distinctly audible
- Exceptional build quality with premium materials like aircraft aluminum alloy, resulting in a durable yet lightweight design
- Comfortable fit for long listening sessions due to narrow vertical placement in the ear
Product Considerations
- Treble is slightly rolled off, which can sacrifice some airiness and detail in the highs
- Below average passive isolation, not suitable for noisy environments
- Soundstage is average to narrow
Comparisons (according to reviewers)
- Vs Final A8000: The A8000 has a more natural tonality overall, more air, a wider soundstage, and better separation/layering, while Twilight has more bass with forward vocals and rolled off treble
- Vs 64 Audio Duo: Twilight offers warmth and engagement in its sound signature, especially noticeable in the midrange, while the Duo provides a sound that is rich in detail and expansive in soundstage
- Vs Meze Audio Advar: The Advar is better in critical listening and brass instruments, while the Twilight has better 3D imaging
Takeaway: The Softears Twilight is an excellent IEM that offers a very easy, likeable, and musical sound which can be enjoyed for hours. It offers a balanced to warm sound, sublime vocals, and comfortable fit, making it a solid choice for audiophiles looking for a single dynamic driver IEM.
Video review
Our take on the brand
Product Strengths
- Warm, bassy, and well-extended sound signature with a tasteful, but still aggressive, mid-bass rise
- Good treble extension that avoids sharpness and adds a nice sense of micro-contrast throughout
- Offers a 'cohesive' or 'coherent' sound presentation, creating an enveloping experience
- Significant improvement in size and fit compared to previous Symphonium IEMs like the Helios
Product Considerations
- Bass may be too prominent for those who prefer more tonal clarity and forward vocals
- Imaging is described as 'so-so' and not particularly strong in technical performance
- Some reviewers found the aesthetic or finish of the shell to be a bit 'rough around the edges'
- Security of fit can be so-so out of the box, potentially requiring aftermarket ear tips for a more secure fit
- Harder to drive than normal, requiring a decent source
Comparisons (according to reviewers)
- Vs. Dunu SA6: The Meteor has more bass impact and a warmer sound, while the SA6 has a cleaner midrange
- Vs. Letshuoer EJ07M: The EJ07M is more technical, with tighter bass, while the Meteor offers a unique 'cohesive' sound
- Vs. Thieaudio Oracle MKI: The Oracle MKI is more neutral
Takeaway: The Symphonium Meteor is a good IEM for those who enjoy a warm, bassy sound signature with excellent treble. Its improved fit and unique sound presentation make it stand out.
Video review
Our take on the brand
Product Strengths
- Non-fatiguing sound signature allows for hours of listening
- Included cable is of high quality and provides versatility, allowing for the use of 4.4mm, 3.5mm, and 2.5mm terminations, depending on the source
- Vocals are a standout, offering a natural and engaging presentation
- Resin shell is both visually appealing and comfortable for long listening sessions
Product Considerations
- High price may feel steep considering the uneven frequency response and average technical abilities
- Treble is a bit dark and uneven, which can detract from overall clarity
- Bass is not particularly distinct, with a flatter sound signature
- Soundstage depth, imaging, and detail retrieval are only average, limiting its presentation
Comparisons (according to reviewers)
- Vs Kinera Imperial Nanna: The Skuld falls perfectly between more budget-friendly models and higher-end selection
Takeaway: The Kinera Imperial Skuld is easy to listen to and enjoy. It has good instrument separation and layering, so all elements can be clearly heard.
Video review
Our take on the brand
What competes at this price?
Our Summary
Product Strengths
- Excellent sound quality with depth, great soundstage, and crisp, clean elements
- Active noise cancellation is a useful addition and blocks out rumbling and background chatter
- The earbuds themselves are smaller compared to the previous version
- Touch controls are responsive and easier to use than the old version, and customizable
Product Considerations
- Continuous battery life with ANC on is quite short at around 4 hours
- The case is not the smallest and can create a bulge in your pocket
- Microphone sounds muffled
- These do not support multi-connect, meaning that these cannot connect to a phone and a tablet simultaneously
Comparisons (according to reviewers)
- Momentum 2's do not support multi-connect like the Jabra Elite 75T
- AirPods Pro's transparent hearing quality is better than Momentum 2's
- Sony's noise-cancelling has an edge over the Momentum True Wireless 2
- Galaxy Buds Plus have great clarity, but the bass isn't as good as the Momentum 2's
- The Momentum 2's sound better than AirPods
- Momentum 2 is more comfortable and nicer to use, battery life is better, and noise-cancelling is included
Takeaway: The Momentum True Wireless 2 earbuds offer respectable noise cancelation, sound good, and are sweat-resistant. These could be worth buying if sound is the main priority.
Video review
Our take on the brand
Our Summary
Product Strengths
- Fantastic sound quality, with 7mm dynamic drivers delivering rich, velvety, soft, dynamic, wide, clear, deep, and full sound
- Same drivers as the more expensive Momentum True Wireless 2.0
- Good passive noise cancellation due to a tight in-ear fit
- Customizable sound experience through the Sennheiser Smart Control app, which offers a graphic EQ
- Comprehensive touch controls, which can be customized via the app
Video review
Our take on the brand
Our Summary
Product Strengths
- Excellent sound quality, described as articulate, natural, and impressive with great instrument separation
- Support for high-quality codecs like aptX Lossless and Snapdragon Sound provide near lossless audio and high-resolution capabilities
- Now have an IP54 certification for dust resistance
- Comfort and fit are generally good, especially with the inclusion of different size ear tips and wingtips (fins) to accommodate various ear shapes
- Feature battery protection mode to extend battery lifespan
Product Considerations
- Some reviewers found the default sound tuning to be bassy and muffled, needing EQ adjustment
- The Sennheiser Smart Control app's EQ is considered basic and limiting
- The case is considered larger than competitors
- Some found the ear tips did not seal as easily as other earbuds
- Some reviewers experienced a hissing sound in transparency mode
Comparisons (according to reviewers)
- Vs. AirPods Pro 2: AirPods Pro 2 sounds better out of the box, has better ANC and transparency, and better ecosystem benefits for iPhone users
Takeaway: The Momentum True Wireless could be a good buy for those wanting earbuds that will last for years. With the right settings, they sound great and come with future-ready features.
Video review
Our take on the brand
Our Summary
Product Strengths
- Comfortable fit, especially for longer listening sessions.
- Visually appealing and unique design.
- Good accessory set for the price, including a useful carrying case.
- Fairly balanced and smooth sound signature, non-fatiguing to listen to.
- Good noise isolation
Product Considerations
- Mids can sound veiled or muddy, lacking clarity and detail.
- Bass impact can be soft and lacking definition, sometimes sounding "one-noted".
- Treble lacks airiness and sparkle, with limited extension.
- Technical performance is average compared to competitors in the same price range.
- Some reviewers note BA timbre, affecting the naturalness of instruments and vocals.
Comparisons (according to reviewers)
- The Moondrop Aria is considered more complete sounding and vivid.
- The SeeAudio Yume perfects the Thieaudio Legacy 2’s tuning with a cleaner midbass, more upper mids clarity, and a more realistic treble experience.
- The Thieaudio Legacy 3 outperforms the Legacy 2, doing everything better.
- The TRI Starsea has better soundstage, clarity, and microdetails
Takeaway: The Thieaudio Legacy 2 offers a smooth listening experience and a comfortable design at an affordable price. It could be a good choice for those who want something nice looking and easy to listen to, especially for acoustic music.
Video review
Our take on the brand
Our Summary
Product Strengths
- Premium design and build quality, using materials like aluminum and glass for a luxurious feel
- Sound quality is generally praised as excellent, detailed, and balanced, especially after equalization
- Comfortable and secure fit, particularly for those with smaller ear canals
- App provides an intuitive EQ interface with customizable presets
Product Considerations
- Active noise cancellation (ANC), while solid, is not considered the best on the market compared to brands like Sony or Bose
- Some reviewers experienced connectivity issues, including problems with multipoint pairing and occasional signal dropouts
- Battery life is respectable but not outstanding, with some reviewers noting shorter-than-advertised playback times
- Responsiveness of the touch controls is sometimes too sensitive, leading to accidental pausing or track skipping
- Some users have found the default sound profile (Optimal) to be somewhat flat or boring, requiring EQ adjustments
Comparisons (according to reviewers)
- Compared to the Apple AirPods Pro, the EX has more clarity, better soundstage and separation, but tonal balance may be preferable on the Airpods Pro
- Compared to the Sennheiser Momentum True Wireless 3, the Beoplay EX offers a more balanced and detailed presentation with a more luxurious build
- Compared to the Devialet Gemini II, the Gemini II offers a more neutral sound signature with advanced ANC capabilities, but Beoplay EX offers a more balanced and detailed presentation with a more luxurious build
Takeaway: The Beoplay EX offers a luxurious experience with refined sound and a stylish design. It's a good choice for those who prioritize sound quality and aesthetics, and value a premium feel.
Video review
Our take on the brand
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