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.
All
HAMT-1 MKII
reviews

Manufacturer details
- Back Cavity: Acacia wood
- Outer Housing: Aluminum alloy
- Ear Pads: Alcantara
- Headband: Aluminum alloy
- Drivers: 57 mm dynamic driver + 40 mm AMT tweeter
- Frequency Response: 15 Hz – 45 kHz
- Impedance: 56 Ω
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:
- oBravo utilizes a hybrid driver configuration, combining a dynamic driver for lower frequencies with a specialized Air Motion Transformer tweeter for enhanced high-frequency performance.
- They are known for crafting their IEM and headphone housings from premium and often unusual materials such as brass, ceramic, wood, and copper, selected for their acoustic properties and aesthetic appeal.
- oBravo's products often feature a semi-open design that aims to provide a more spacious and speaker-like listening experience compared to traditional closed-back IEMs and headphones.
- They engineer and patent their own proprietary AMT drivers, including the AMT II, continuously striving to improve the performance and efficiency of their unique tweeter technology.
Select products
CUPID (ULTIMATE)
- Positioning: The entry-level earphone designed for affordability and portability.
- Description: Features a unique Planar Magnetic Driver that brings clear, bright highs and engaging mids in a simple package. Compared to the Air Motion Transformer models, it offers dynamic sound at a lower price point, ideal for users who seek portable performance without the complexity of higher-end builds.
EAMT-2C
- Positioning: A mid-range earphone focused on miniaturization and balanced full-range performance.
- Description: Features exclusive miniaturization and Air Motion Transformer technology that delivers rich spatial sound and precise bass clarity. When compared to the simpler CUPID (ULTIMATE) and the more refined EAMT-1C, it offers a balanced mix of performance and cost‐efficiency for everyday critical listening.
EAMT-1C
- Positioning: A higher mid-range earphone tailored for audiophile-quality listening on the go.
- Description: Features refined Air Motion Transformer tweeter and single crystal oxygen-free copper cable that enhance realism and warmth. Compared to the EAMT-2C, it provides a more engaging, full-bodied sound while still staying below the flagship models in terms of price and imaging sophistication.
RA-C (21.5)
- Positioning: A premium earphone model aimed at delivering lifelike spatial imaging and detailed sound.
- Description: Uses advanced materials like pure silver, gold-plated silver, and oxygen-free copper wiring that produce crisp highs, warm mids, and deep bass with precise spatial cues. In comparison to the lower-priced models, it offers superior audio balance and critical listening performance.
RA-C-CU (21.5)
- Positioning: The flagship earphone focused on the highest fidelity and premium build in the lineup.
- Description: Takes advanced material construction further by providing extremely nuanced imaging and groundbreaking sound clarity through refined use of high-grade conductors. When benchmarked against all other models, it delivers top-tier performance.
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Used
oBravo
What if you spend more?
Product Strengths
- Sounds big and open for a closed-back headphone, with an impressive soundstage for its type.
- Offers a warm-leaning, smooth, mid-forward sound signature.
- Very good imaging creates an immersive listening experience, and detailed separation of instruments.
- Easy to drive with a low impedance and high sensitivity, making it suitable for use with portable devices.
- The wooden earcups have a large internal space that brings sufficient volume and breathing room to the driver.
Product Considerations
- Build quality may be disappointing for the price, particularly the headband, which is considered cheap compared to other headphones in the price range.
- Comfort can be an issue due to the weight and headband design, which may cause discomfort on the scalp for some users.
- Lacks clamping force, so the weight is felt on the top of the head, and it does not isolate sound very well.
- Treble response might be somewhat softer or less energetic compared to other headphones, which might not appeal to those seeking a more exciting sound.
- One review mentions an issue with a dip around 5kHz and a peak around 10kHz that impacts some instruments, though it is admittedly 'nitpicking'.
Comparisons (according to reviewers)
- Vs HIFIMAN HE-R10D: There is a difference in price and sound signature.
- Vs HIFIMAN Susvara: The HE-R10P has less soundstage, the Susvara has more transparency, but the HE-R10P has more mid-bass presence.
- Vs Focal Stellia: The HE-R10P has a larger soundstage and more powerful bass, but Stellia has a safer tuning with a brighter high end.
Takeaway: The HiFiMan HE-R10P is a closed-back planar headphone that delivers exceptional sound quality with remarkable imaging and detail, making music sound lively and fun. Its unique design aims to create an open and spacious listening experience, allowing listeners to enjoy music for hours.
Video review
Our take on the brand
Our summary
Product Strengths
- Considered by many as having the best sound achievable in an in-ear headphone, making it an exceptional audio experience
- The sound signature is mostly balanced with tasteful coloration, where the treble imparts a particular element that is potentially preferable
- The midrange is extremely well done
- Features unique SLAM subwoofer, woofer, midwoofer, mid tweeter, tweeter and EST technologies
- Built with Grade 5 titanium, providing sturdiness and high quality
Product Considerations
- Treble performance can be hit or miss depending on the listener's anatomy and HRTF
- Requires more power than typical IEMs, potentially draining the battery of portable audio players
- Shells are on the larger side
- The included cable is nice, but the chin cinch tends to slide down
Comparisons (according to reviewers)
- Compared to the Hi-Senior Megafest and Dusk Default DSP, the Storm is an editorialized or enhanced version of those IEMs, particularly regarding bass and mids
- Compared to the 64 Audio U6T, it has similar balance with similar tasteful colorations, but Storm's bass is more punchy and the upper treble is more to the reviewer's preference
- Compared to the Empire Ears Odin, the Storm is preferred because the Odin is not as versatile, and the Storm sounds more detailed
- Compared to the Empire Ears Raven, the Storm is more normal in a good way because the Raven has massive bass and a strange lower midrange resonance feature
- Resolution, stage and tonality are better on the Storm compared to Grand Maestro
Takeaway: The Storm is a high-end IEM with exceptional sound quality and great build, even if pricey. It could be worth buying for those who want the best possible audio experience and appreciate a balanced sound with unique features.
Video review
Our take on the brand
What competes at this price?
Our Summary
Product Strengths
- Combines planar magnetic and dynamic drivers to deliver both detail/speed and powerful bass response
- Comfortable for long listening sessions, despite having two drivers per side and a crossover
- Produces clean and detailed sound, with a decent sense of clarity
- Relatively easy to drive compared to other planar magnetic headphones
- Smooth transition between the dynamic and planar drivers, creating a coherent sound
Product Considerations
- Has a mid-bass hump and a roll-off in the sub-bass region, which may not appeal to all listeners or genres
- Treble response may be too energetic for treble-sensitive individuals
- The tuning may not be suitable as an 'all-rounder' headphone for all music genres
- Needs a solid-state amplifier to control the dynamic driver in the low end
Comparisons (according to reviewers)
- Vs HiFiMan HE-1000SE: The Isvarna has a wider soundstage, but less height and depth
- Vs HiFiMan ARIA Organic: The Isvarna has more bass
- Vs Kennerton Veneta: The HiFiMan is more bassy for bass heads
Takeaway: The HiFiMan Isvarna is a unique headphone that delivers a fun and engaging listening experience with its hybrid driver design, especially for those who enjoy bass. It is comfortable, relatively easy to drive, and offers a clean and detailed sound.
Video review
Our take on the brand
Our Summary
Product Strengths
- Excellent build quality and visually stunning design with unique wood cups, making each unit unique
- Good bass response with well-balanced tonality, texture, definition, speed, and dynamics
- Treble presentation is excellent, smooth, bright, and airy without being overly forward or fatiguing
- The Caldera Closed uses Atrium Damping System (ADS) for a more natural sound decay
- Very resolving with class-leading dynamics
Product Considerations
- Mid-range tonality may be uneven and forward for some listeners, potentially causing fatigue or a 'hollow' timbre
- Soundstage is relatively narrow compared to some other closed-back headphones
- Can be moderately difficult to drive, not suitable for all portable amplifiers
- Weight might be an issue for some users, though well-distributed
- Requires high-quality audio tracks to sound its best
Comparisons (according to reviewers)
- Versus Caldera Open, the closed version has a superior treble presentation, the open is preferable in the mid-range
- Versus the Dan Clark Audio E3, the Caldera Closed is easier to drive and has better dynamics, the E3 has a wider soundstage and is more comfortable
- The Caldera Closed is more spacious sounding than the Atrium Closed
- The Caldera Closed is better than the Verite Closed for all-day listening
Takeaway: The ZMF Caldera Closed is a beautifully crafted, high-performance closed-back headphone with excellent bass and treble, making for a fun and engaging listening experience. The versatility to use it with most amps makes it a great choice.
Video review
Our take on the brand
Our Summary
Product Strengths
- Superb build quality with high-quality materials and Italian styling
- A large soundstage and good imaging create a sense of space beyond the ears
- A deep, full, fast, and refined sound is delivered with detail and energy
- Offers customizability through cable choices and a Partializer Filter to adjust frequency response
Product Considerations
- The Radiante are quite heavy, weighing 460-470g (without cable)
- The headband is poorly padded, making the Radiante uncomfortable for some users
- The passive radiator offers limited passive isolation
- The bass may be excessive for some listeners
- It can be a bit fiddly to adjust the Partializer filters
Comparisons (according to reviewers)
- Vs HiFiMAN Jade II: The soundstage on the Jade II is larger, but it is deeper on the Radiante, which also offer better imaging
Takeaway: The Spirit Torino Radiante offers a luxurious and customizable listening experience with a well-crafted design and engaging sound. If someone wants a closed-back headphone that delivers above and beyond in terms of sound, engagement, style, and comfort with the ability to adjust sonic characteristics, the Radiante could be a great choice.
Video review
Our take on the brand
Our Summary
Video review
Our take on the brand
Our Summary
Video review
Our take on the brand
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