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The Deva Pro have a bright-tilted sound with the bass being more emphasized in Bluetooth mode, whereas the treble gains more presence in wired mode. Bass The DEVA’s make great ‘at home’ headphones, too. Supplied with a 3.5mm cable (with 6.35mm adapter), simply connect to your headphone amp at home and enjoy top quality, analogue sound.
HiFiMAN stopped declaring technical specifications of the Bluemini R2R, only saying that its SNR is 114 dB and that its frequency response is 20 – 20,000 Hz. Of course the most important piece in this case is the DAC, as it is the new HiFiMAN Himalaya: it is an in-house design of an R2R DAC, which according to HiFiMAN is comparable to the PCM1704 in terms of THD and SNR, while consuming a lot less power (20 mW vs 450 mW). Treble: The upper registers are not as bright and colorful as you might think, it is a darker presentation with beautiful and natural highs. However, it should be remembered that they are slightly tinted, which is not very noticeable, because it allows us to rest and relax after many hours of listening. The strings and details are at an impressive and very high level, and the whole thing has a lot of freedom and air. Such presentation of music allows you to relax and immerse yourself in natural and beautiful sound. Here I also like the unusual lightness while maintaining weight, which is often missing in headphones in this price range.
This is HIFIMAN’s standard headphone box with zero quirks or decorative garnishes save for a satin overlay on the memory foam inside and a foam layer on the lid to protect the headphones during transit. It is simple but effective, and to be honest, on par with most competing headphones at this price point. As expected though, she took them off and simply said – wow, beautiful. That’s exactly what I’ve heard. The vocal of Mariusz Duda was such beautifully mellow, moist, resonating, romantic…it is hard for me to explain the genesis of such thing by looking at the frequency response. One thing I’m sure though – that was a TOP 5 performance when it comes to this specific song that I’ve ever heard, and I’ve tried it on some really serious gear, reaching 100k dollars and above. Stunning. ST-Amp with 1.8w is sufficient to drive it properly, but when i switched to the bigger brother, the CH-AMP with 3.8w of power, it sounds even more dynamic and so much fun to listen to iit Where the Deva does result far more comfortable (for me) than the HE400se is in the pad section. Where the pads on the HE400se have a kind of towelling material on the inside, the deva have a smoother material, similar to that found on the Ananda etc. Personally I much prefer this as I find the other material causes me to itch (and produces more heat). Slowly and steady HIFIMAN’s is giving every headphone a cloak and a dagger, making refractions and diffuseness disappear into the shadows, quietly and smoothly with more precision than ever before. A further step to reach low acoustic impedance based on the original Window Shade system, now enhanced with stealth magnets. So far every iteration has been an improvement both on physical and acoustic design level and also in tuning, fixing timbre and balance issues in one sweep. The Deva Pro marks is superb value if you’re not in strict need of usual “BT Wireless” requirements that consider isolation from outside noises.
The original Deva was one of the most open sounding headphones in the market but the Pro takes it even higher further improving the performance. The stealth magnet assembly has magnets with rounded edges, which apparently reduces the turbulence as sound-waves pass through them. This apparently makes the magnet array almost “acoustically transparent” and reduces distortion. The way the Deva Pro works is very simple. To use it in BT mode, you attach the BT module to the bottom of the left cup, hold the button to turn it on, connect to source and away you go. To use them with a normal cable set up, just remove the module and connect the cable to both cups. I believe you can also use a 3.5 TRRS cable to just one side if you prefer, although I am not sure about the pin out, that would need to be confirmed. There is a Type-C port at the bottom that can either charge the module or allows connecting to a computer to act as a DAC-amp. The solitary button can be used to power on or off via long-press, whereas a short-press disconnects the Deva Pro from the current device. A double press takes it into pairing mode. The Bluemini R2R module connects via a 3.mm TRRS connector. If you want to commission a custom cable if ever you need different connector types (balanced and such), cable material, or others, just send HIFIMAN a message on Facebook and they’ll send the pinout immediately.Bass is not perfectly linear and therefore it doesn’t hit the lowest notes with the same strength as the rest. That said, the Deva Pro go quite deep with their bass and can be very fun with the right music, although they are just north of neutrality in general terms. Aes Dana’s Inks, as an example, does not envelope you in deep bass lines as it does with higher-end headphones by HiFiMAN (e.g. the Arya). Still, I find bass on the Deva Pro to be quite interesting, as it lays out quite a bit of detail in front of the listener and gives you a very good sense of texture. As one can legitimately expect from planar drivers, speed is quite good and transients are fast and with a short decay. There is a strange volume limit and you can't get the full available range as you can do when it is connected to a PC or in Bluetooth mode. The presence area is perceived as a little bright but with better textural quality and extension than the original Deva and not as pronounced. The Bluemini can also be used in OTG connection with Android and iOS devices running from its internal battery but there is one glitch. It still got that lush, pleasant, and very natural tone to the vocals, but now with added resolution and detail, which don’t sound forced at all. It’s an upgrade that is coherent, organic, and just about perfect.
The build quality is much the same as any other Hifiman headphone of the same style. Using the headband that Hifiman chooses on the majority of their new models, there is plenty of adjustment in the cups, which should result comfortable for most people. I personally find that this style of headband does create a bit of a hotspot on the top of my head with extended use but for some reason, it doesn’t seem to be as uncomfortable (for me) over long periods as the Edition XS that I reviewed recently, possibly due to the cup shape and how the clamp to my face. Comfort wise I find it almost identical to the HE400se, which can still be improved with nuggets or the addition of a comfort strap, but is not a necessity. Don’t take my word for it. You have all the time you can muster to listen again and again to the samples I have recorded. Please use headphones or earphones, you simply will not get the proper quality by listening to headphone samples from your smartphone speaker or even your hi fi speakers. This demands close attention and concentration. I’m hoping it’ll also be a bit of fun. I’m expecting to be able to post many samples of all sorts of headphones in the months to come, so you’ll be able to build up a virtual library of headphone auditions without getting up from your chair. Now how convenient is that? I am hoping that you can make some judgements on what might be for you using not only words and video but now by adding a listening experience to that. from there hopefully you can narrow down this minefield and make some realistic buying decisions that won’t be a source of regret in the future. How does that sound? Attachments The Deva Pro is now equipped with a dual entry system allowing you to use cables with left and right 3.5mm TRS stereo connectors in the same manner as their high-end headphones. Those with the likes of the Ananda or the Arya Stealth will now be able to roll those cables with the Deva Pro. They could have included a balanced cable (instead of the long USB one), or at least sell one as an option, and not make us try to find such a specialty cable by ourselves
Packaging & Accessories
The Bluemini Bluetooth module offers a vast array of codecs on top of its Bluetooth 5.0 connectivity: in fact it offers SBC, AAC, aptX, aptX HD and LDAC– more than enough to satisfy even the most demanding audiophiles. It’s not the exact same as having a wired connection, but I would argue that it’s the closest you can get to that. This review couldn’t possibly be any more absolute & utter trash”– you have simply chose to ignore the issues I raised, something which other readers will pay more attention to. Build quality is more than decent, though I personally think the plastic ends of the headband look a bit poor. There’s no creaking or other issue I can spot, save for some that I can sometimes hear – but which I suspect is actually my hair getting inside the grilles and messing with the drivers. The tuning is even up to the mids without any signs of bleeding so the bassline is crystalline, tight, controlled, with excellent articulation, exemplary layering and instruments never get masked. The sound is full and dynamic with that organic R2R flavor that results in a pleasing, analog sound signature with natural timbre and good extension to both ends.
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