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. The Himalaya is rather neutral, faithful to the original source and does not run some kind of DSP to specifically match the Deva Pro. The chipset shortage led HiFiMan to re-design the Bluemini from scratch and adopt the classic R2R method.

You also get a 3.5mm to 3.5mm cable, a 3.5mm to 6.35 mm converter, a USB-C cable, and user manuals. There’s no carrying case unlike the Ananda BT, probably for reducing the cost. Design & Build Quality The BT module has also changed from the previous Qualcomm CSR8675 receiver to a more modern 8-hour capable Qualcomm QCC5124 chipset. I’m not gonna lie – I really like the appearance and the color scheme of the original Deva, but I know many people that found it…controversial. Even though it looked way better in person than in the photos, it still gained some attention because of that, and that’s not really desirable by the brand.

Bass is linear with good sub-bass extension for most of the time but it is not going to shine with deep bass electronic music nor offer a rumbling and thundurus experience. There is ample power here to get the Deva Pro very loud. A quirk of the module is that the volume increments are not linear when connected via Bluetooth. At lower volumes, it’s too quiet, and then right after 50%, it gets tad too loud for me. Connectivity is stable until 7 meters, then there are occasional connection dropouts. Bluemini-Small but Mighty: The DEVA companion Blueooth / USB module; Bluetooth receiver, DAC and Amp all in one. Bluemini’s built in power amp and buffer stage filter has power, dynamics and detail enough to rival a desktop amp. With built-in Microphone Bass starts rising from 30Hz and becomes noticeable around 40Hz. Bass response is pretty much flat. In BT mode there is more emphasis near the sub-bass it seems, though the bass sounds rolled-off after 35Hz in all three modes (Bluetooth, USB, and wired). For reference, I own Massdrop HD 6XX's, Audeze LCD-XC's, Shure SE535 & SE846's, Cupid hybrids by obravo and Ausounds Flex-ANC hybrid, Massdrop CTH & SDAC (computer sourced amp/dac), FiiO BTR5 (portable bluetooth dac/amp) and Audioquest Dragonfly Cobalt (Usb C amp/dac). I like music...

They sound amazing and loud with the included Amp (after a week of running them hard), and are great for any kind of music, including but not limited to Classical, Opera, Jazz, Pop and World Music, and they sound very fresh and open. 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 There is ample power here to get the Deva Pro very loud. A quirk of the module is that the volume increments are not linear when connected via Bluetooth. At lower volumes, it’s too quiet, and then right after 50%, it gets tad too loud for me. Connectivity is stable until 7 meters, then there are occasional connection dropouts. Internals At the beginning of 2021, I had the chance to review the Ananda Bluetooth, a more expensive set of Bluetooth headphones from the brand. The Ananda BT were far from perfect but they still remain the best sounding set of Bluetooth headphones I have heard to date. They were priced at over 1000€ at the time and, although the price has dropped since then, they still remain a quite an expensive set of Bluetooth headphones with a few quirks that didn’t convince everyone. My first impressions of the Deva Pro were that they reminded me a lot of the HE400se (a headphone that I am very fond of and is my highest recommendation at its price point). After some more detailed listening, the sound is not identical to the HE400se but it is very similar, at least in my opinion, with some slight changes that could actually be dependent on the pad difference between the two units. I haven’t yet tried swapping pads between them (I believe they fit but I'm not sure) but it would be an interesting experiment.The size is perfect even for my big head and big ears, making it the most comfortable headphone I have ever had Anyway the treble is mostly smooth and controlled with excellent extension and can resolve some fine detail without sounding analytical.

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. They improve on the functionality of the Ananda Bluetooth, which may sound a little better in terms of audio, but is far behind the Deva Pro in terms of usability, and here we are talking about a set of headphones that is three times the price of the Deva Pro. In this regard I would no doubt recommend the Deva Pro out of the two. I feel that the Ananda BT is a very niche product that will fit a very select number of users and use cases, however, the Deva Pro is a very versatile set of headphones that should meet anyone's use case. Obviously these are not a set of bluetooth headphones that you would use on a plane or other transport, but the commodity of being wireless whenever needed, without a loss of quality, is something to be praised. The timbre sounds quite natural and the tonality does have a slight emphasis on the treble (slightly bright). A very minor V shaped tuning to my ears, both the lows and highs are slightly elevated and slightly recessed mids, hence i call them as minor V shaped. Midrange is neutral toned, vocals and instruments sound balanced and even, exactly in the way that they were recorded without extra emphasis from the headphone, so don't expect it to sound colored and mid - centric. 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.

HIFIMAN Deva

The Bluemini can also be used in OTG connection with Android and iOS devices running from its internal battery but there is one glitch. HiFiMAN is using their tried-and-tested planar magnetic drivers on the Deva Pro, though they made the driver even more efficient this time. The most notable changes in their latest driver revision are the stealth magnet assembly and the neo-supernano diaphragm.

I haven't tested with applications like Neutron or UAPP which supposedly can bypass the internal volume software of the host device but with streaming services like Tidal and Qobuz you get the volume limit, so this is something to consider if you plan on using it this way. The attachment connects via the 3.5mm audio input. You’ll find a few ports and buttons along the bottom of the device including a USB Type-C port, a power button and a charging button. It’s a bit of an eyesore when attached to the Deva, but it’s worth the trade-off to enjoy my music sans cables. I’ve used my computers as the main sources when testing the HiFiMAN Deva Pro with Bluetooth, with mostly FLACs ripped from CDs as music files. When using the headphones wired, I used a Topping DX7 and a Drop THX AAA 789. HiFiMAN Deva Pro The earpads are angled, aren’t circular, and are rather… elliptical? Hole is larger than the HE400se and should fit most ears. I do have to note that it was quite stiff OOTB, but a few days of leaving it “engaged” on the product box resulted in a softer feel on-ear (break-in).

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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. Thanks to its functionality and the overall sound performance, I use the Deva Pro way more than the Ananda ever since I got them, and having in mind the price difference and the fact that the Ananda itself is a very, very good headphone should tell you how I really feel about the Deva Pro. In terms of sound, Susvara utilizes HIFIMAN’s years of research into planar magnetic drive performance. It provides all the detail and transparency of the Arya or HE1000, but adds even greater technical performance, and one of HIFIMAN’s most balanced engaging tunings on top of that. The Bottom Line Like its predecessor, ANANDA-BT, the DEVA raises the bar for wireless audio but at a moderate price point.”