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
- The sound is warm, smooth, lush, organic, and impactful
- Very light and comfortable on the head
- Foldable and very compact, making them easy to travel with
- Battery lasts more than twenty hours
- Bluetooth connection does nothing to detract from the relaxed and powerful bass character
Product Considerations
- Only AAC and SBC codecs are supported, no AptX or LDAC
- There is noticeable latency in the audio/video synchronization
- The Bluetooth connection is disabled when the charging cable is plugged in
- Not the most resolving sets in the world
- Semi-open, so they are not all that isolating and leak a fair amount of sound
Comparisons (according to reviewers)
- Vs Marshall Major V: Koss Porta Pro Wireless 2.0 stands out for its semi-open design, offering a wider soundstage
Takeaway: The Porta Pro Wireless brings a classic into the modern era while keeping its original sound signature. They are light, comfortable, and convenient to carry around, making them great for enjoying music on the go.
All
Porta Pro® Wireless
reviews

Manufacturer details
- Frequency Response: 15-25,000 Hz
- Impedance: 60 ohms
- Sensitivity: 101 dB SPL
- Bluetooth Version: 5.2
- Battery Life: Up to 20+ hours
- Charging: USB-C
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:
- Koss is known for electrostatic headphones and complete systems, including dedicated energizer/amplifiers, at a comparatively affordable price.
- The brand balances the retro aesthetic of classic designs with modern features such as wireless connectivity and detachable cables.
- The brand fosters a community around its products, evident in collaborations with companies such as Drop, and is receptive to community feedback in design and development.
Select products
Porta Pro
- Positioning: The entry-level design focused on portability and everyday use.
- Description: Features updated aesthetics with inline controls and a comfortable build that suit small-room or on-the-go listening. Compared to the mid-range and electrostatic models, it offers a simpler sound signature and basic functionality without high-end tuning.
PRO/4AA
- Positioning: A mid-range option aimed at users looking for robust, everyday performance.
- Description: Delivers clear sound and reliable build quality that make it suitable for studio work and extended listening sessions. When compared to the entry-level Porta Pro and more premium electrostatic products, it provides improved audio clarity and durability with a modest step up in cost.
QZ99
- Positioning: A balanced mid-range model designed for everyday versatility.
- Description: Introduces modern design elements and enhanced comfort to fit both home and travel use with stable sound performance. In comparison to the PRO/4AA and Porta Pro, it emphasizes design refinement and user experience, though it does not offer the advanced technology of the electrostatic series.
ESP950
- Positioning: A high-end electrostatic system aimed at detailed and precise sound reproduction.
- Description: Uses electrostatic driver technology to deliver clear, crisp audio with a spacious soundstage suitable for controlled listening environments. Compared to non-electrostatic models like the QZ99 and PRO/4AA, it stands out with higher sonic precision while remaining a step below the flagship model in overall refinement.
ESP95X-plus
- Positioning: The flagship model featuring premium electrostatic technology and superior build quality.
- Description: Refines electrostatic design with enhanced tuning and high-quality materials for exceptional clarity and performance. When contrasted with the ESP950 and other lower-tier models, it offers the most advanced features and detailed sound response.
Our take on the brand
Look inside the brand
Our interview with the brand
What are two key technological innovations or strong opinions that differ you from other brands?
What's your approach to customer support?
What are your favorite tracks for showcasing the strength of your products?
What other products pair best with yours?
What if you spend more?
Product Strengths
- Impressive, high-quality audio reproduction and detail that is comparable to wired headphones
- Comfortable for long listening sessions
- Bluetooth connectivity is stable with a long-distance range
- High-quality codecs are supported, including LDAC and aptX HD
- Can be used wired via USB-C
Product Considerations
- Open-back design offers limited passive noise isolation and noticeable sound leakage
- Clamping force of the earcups can cause hotspot around the temple area
- Battery life is average, and battery is not easily replaceable
- Limited on-device control options for volume or skipping tracks
- USB-C connectivity may have volume and usability issues, depending on the source device
Comparisons (according to reviewers)
- Versus Focal Batis, the Ananda-BT is a direct competitor
- Versus Sennheiser Momentum 4, the Sennheiser has slightly better call quality, but the audio quality is disappointing in resolution and clarity compared to Ananda-BT
- The wired version has superior sound, but the Ananda-BT is more versatile due to its Bluetooth connectivity
- Versus Bose QC35II, the QC35II is better for portability and noise isolation, but Ananda-BT has far superior sound quality
Takeaway: The Ananda-BT are great sounding wireless headphones that offer impressive technical capabilities. For audiophiles who value convenience without sacrificing too much sound quality, they could be worth considering.
Video review
Our take on the brand
What competes at this price?
Our Summary
Product Strengths
- Very comfortable to wear, to the point of almost forgetting they are being worn due to the light weight and design
- Sound quality is good for open-ear earbuds, with clear audio and decent bass
- Solid battery life offers around 12 hours of playback on a single charge, and 40 hours with the charging case
Product Considerations
- Maximum volume may be on the lower side, especially in noisy environments
- The triple tap control can be tricky to use
- Lacks a custom EQ option in the app, only offering preset EQs
- Does not support wireless charging
- Weak case magnets cause earbuds to fall out easily if dropped
Comparisons (according to reviewers)
- Vs 1More S50: The S70 is a tad softer than the S50, but has more stock bass; the S70 build quality has jumped a few notches; the S70 is a proper follow-up to the S50
Takeaway: The 1More S70 are comfortable open-ear earbuds with great sound quality and good battery life for those who like to be aware of their surroundings while listening to audio. The sleek design and practical features make them a solid choice for everyday use.
Video review
Our take on the brand
Our Summary
Product Strengths
- Open-back design provides a wide soundstage, sometimes described as industry-leading for a Bluetooth headphone.
- The BlueMini Bluetooth adapter is convenient, versatile, and provides good value as a wireless balanced DAC/amp module.
- Comfortable to wear, with large ear holes and soft earpads accommodating various ear sizes.
- A wired-only version has been released at a lower price, making it more attractive for wired listening.
- Offers multiple connectivity options: wired (analog and digital via USB), and wireless (Bluetooth).
Product Considerations
- Bass response may be lacking for bass enthusiasts, described as 'sucking' or 'rolling off' in some reviews.
- Treble can be bright and sibilant, and potentially 'hashy', especially at higher volumes or with certain pairings.
- The build quality, while decent, uses more plastic than some competitors like the Sundara.
- The stock cable is stiff and can produce microphonics.
- The included Blue Mini Bluetooth adapter lacks advanced features like volume control or track skipping.
Comparisons (according to reviewers)
- Vs. Hifiman Sundara: The Sundara generally offers better overall sound quality, detail, vocal presentation, and bass (when both are wired), but the Deva with BlueMini gets very close.
- Vs. Hifiman HE400/HE400i: The Deva is better overall when using the BlueMini, especially compared to HE400.
- Vs. Sennheiser HD 6XX/650: The Deva is similar in some ways to the HD 6XX, with a comparable sound signature, but the HD6XX may be smoother in some respects, the HD6XX bass tends to be muddy, while the Deva has a tighter controlled base.
- Vs. AKG K712 Pro: The Deva is tuned closer to the HD 6XX and the 712 Pro but has a narrower soundstage, the 712 Pro has fun articulate bass.
Takeaway: The Hifiman Deva is a versatile headphone that offers a unique blend of open-back planar sound with convenient Bluetooth connectivity, making it a worthwhile consideration for those seeking a convenient and good-sounding listening experience, especially at home or in the office. The inclusion of the BlueMini offers great value as both a Bluetooth receiver and a DAC/Amp, which lets the Deva sound great when wired to a great amp or even just as a DAC to your computer.
Video review
Our take on the brand
Our Summary
Product Strengths
- Excellent spatial presentation, quite holographic, with coherent imaging and separation.
- Balanced sound signature and neutral tuning.
- Improved over the original Deva, adding warmth to fix a slight imbalance of the original.
- Wireless performance is very good due to BlueMini R2R dongle.
- Very comfortable to wear.
Product Considerations
- Use caution when taking it outdoors, particularly when it's windy.
- Stock cable is subpar.
- Aftermarket cable considerations must be taken into account because standard dual 3.5mm headphone cables can short something out.
- Drivability can be an issue with some devices, potentially requiring high gain and higher volume levels on DAPs.
- The extension mechanism on the headband feels a little bit clunky at times.
Comparisons (according to reviewers)
- Vs HE400SE: A clear step up, with better resolution and less sibilance.
- Vs Sennheiser HD600/HD6XX: The Deva Pro has a very expansive soundstage, quite a bit wider than what is found on something like the HD600 or HD6XX.
Takeaway: The Deva Pro is a well-rounded wireless headphone with a pleasingly balanced sound and a uniquely holographic spatial presentation, making it a great choice for audiophiles seeking convenience. The inclusion of the Bluemini R2R adds value through its wireless capabilities.
Video review
Our take on the brand
Our Summary
Product Strengths
- Very secure and comfortable fit due to the design, allowing for extended wear without anything going into the ears.
- Designed to allow awareness of surroundings, important for runners and outdoor activities.
- Sound quality is decent considering the open-ear design.
- Good for phone calls; microphone quality is better than other Bluetooth sport headphones.
- IPX4 rated for sweat and splash resistance.
Product Considerations
- Sound quality is compromised compared to regular headphones or earbuds, especially regarding bass.
- Sound leakage can be an issue in quiet environments at higher volumes.
- Uncomfortable for long durations if wearing glasses.
- The effective volume range is limited when using in noisy environments.
- Bass frequencies are intentionally subdued, the sound profile is not for everyone, and best suits easy-listening genres like acoustic, classical, jazz, and podcasts.
Comparisons (according to reviewers)
- Vs Shox Bone Conduction Headphones: The Float Run is a better option for those who do not like bone conduction, finding it weird or ticklish.
- Vs Bose Sport Open Earbuds: Unfavorable comparison, the Bose Sport Open Earbuds are better open-ear sport headphones.
- Vs Sony Linkbuds: The Linkbuds are more expensive but have more utility and advanced features like app compatibility and Bluetooth multipoint.
- Vs Shokz OpenRun Bone Conduction: The Shokz OpenRun Bone Conduction are more comfortable, better built, and have longer continuous battery life.
Takeaway: If you want to hear what's around you while you run or work out, these could be a good fit. They are made to stay in place and let you enjoy music while staying aware.
Video review
Our take on the brand
Our Summary
Product Strengths
- Outstanding audio quality while ensuring awareness of surroundings
- Well-rounded frequency response helps keep most of the bass frequencies intact, while still permitting hearing outside noises
- Extremely comfortable and secure design, especially for runners and athletes, due to the 'Air Fitting supports'
- Balanced midrange reproduction, making them suitable for genres like indie ballads and soft rock
- Healthy stack of features, offering Bluetooth Multipoint, head gesture controls, Sony 360 Reality Audio, and auto play/pause
Product Considerations
- Open design limits overall sonic capabilities and bass response
- Open design leaks sound and also lets in unwanted noise
- Average battery life (8 hours from the buds)
- Can be tricky to position correctly in the ear
Comparisons (according to reviewers)
- Vs Nothing Ear (Open): The Sony LinkBuds Open are a better bet than the Nothing Ear (Open) thanks to their stronger bass and more comfortable, discreet design
Takeaway: The Sony LinkBuds Open are a great option for those who want awareness of their surroundings with good sound. If struggling with in-ear fit, these earbuds could be the answer.
Video review
Our take on the brand
Questions? Ask the brand's dealers.
How to buy
Headphones
Search all hifi products
Explore our database of 10,000+ new and 25,000+ used hifi products.















.png)










.png)
.png)











