The Deva Pro is a classic planar magnetic headphone that can also become instantly wireless by simply attaching to the left ear cup the included Bluetooth module called Bluemini.

HIFIMAN Deva Pro Over-Ear Planar Magnetic Bluetooth Headphone

Does Deva Pro use stealth magnets ? what are the benefits of stealth magnets ? What other headphones use stealth magnets ? The Deva Pro now introduces the next evolution of the Blue Mini, the Bluemini R2R codenamed Himalaya, a resistor ladder DAC in full BT5.0 fashion supporting all the widely used formats like SBC, AAC, AptX-HD and LDAC and becoming a USB DAC if you decided to sit down cabled to your notebook or PC. During USB, Bluetooth and analog wired mode charging is happening at the same time if you wish so – very convenient. Another day, another very positive review of Hifiman on Ear Fidelity. You’re probably starting to wonder if I’m a Hifiman employee, but of course, it’s not true. Over the years, Hifiman has proven that they are the mad scientists of the audio market. Constantly improving and pushing the value to its limits. This is just the case with their new Deva Pro, which is a spectacular product that’s a true milestone in Bluetooth, over-ear headphones market. The new improved Bluemini R2R and the addition of the Stealth Magnets make it the best Bluetooth headphone on the market by far. Absolutely magnificent.I don't have the Qudelix but it looks like a powerful little dongle so it should be fine from the balanced output. The ear cups are made of plastic though the silver finish meshes well with the aluminum yoke. The earcups are slightly oval in shape and made out of plastic.

HiFiMAN HE400se – Budget Delight - Headphonesty Review: HiFiMAN HE400se – Budget Delight - Headphonesty

The earcups have a perforated cloth material on the front with a solid pleather surround. The headband is foam-padded as well, though I wish the foam was slightly softer. Nonetheless, no hotspots formed on the temple or the sides of my head during the review period. At the bottom, there are two 3.5mm TRRS ports. The Bluemini module can be connected to either earcup. As I mentioned above, the bottom of the module houses the microphone, a status LED, the USB-C port and a single button. The 5xx and the non-pro Deva is most likely technically the same headphone besides looks. Unit variation is just quite high (I can confirm that from personal experience),

Human hearing focuses inherently on this frequency range. So it’s crucial to get this range right. This region

Hifiman Deva Pro • Ear Fidelity Hifiman Deva Pro • Ear Fidelity

Just got the Deva Pro, gave it a 15min listen with the r2r module and it went to the burn-in process.But if you already own the Deva then I don't think that the differences justify upgrading to the Deva Pro and you would better save some money for a higher tier HiFiMan headphone. Headphones and IEMs require a certain level of power to sound their best and work at their full potential. When your headphones or IEMs are underpowered, they can sound thin or muffled. The Pro is definitely superior in technicalities but sometimes it may sound too polished when the original has a little more "dirty pleasure" and organic character to it.

Hifiman Deva – In-Ear Fidelity Hifiman Deva – In-Ear Fidelity

Texture is airy and fluid, mids sound spacious and crystalline but not as rounded as someone might expect. 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. In general, dont overestimate the DAC capabilities of the Bluemini R2R. In my opinion it is a good concept for a bluetooth module, but it is not a particularly good DAC.

Conclusion​

I have compared the Deva Pro quite a bit to the HE400se in this review, at least in regards to sound. To be totally honest, I still feel that the HE400se is the best option under 500€ for a set of planar headphones, or any headphones in general, I am just a planar lover. In a straight “sound to sound” comparison, I feel that the HE400se are a little ahead of the Deva Pro and they come in at less than half the price. The original Deva is sounding less clean and not as resolving both in the quantity of the details and the quality of the expression.