Fans of headphones from HIFIMAN will be surprised to see a high quality, low in cost headphone that supports direct-wired connections and a wireless Bluetooth mode.

HIFIMAN Deva Pro Active Headphone XXX

The headphone I’m talking about is the Deva Pro headphone which, at $329.00 packs an audio punch.

The HIFIMAN Deva Pro is the sort of headphone a casual listener might buy, and that buyer will certainly be attracted by the HIFIMAN name, which audiophiles have loudly praised since the company began in 2007. I did most of my listening in the wired mode to minimize the number of devices and compression schemes in the audio chain and found the Deva competitive at anything near its list price. Listening without comparisons, I found the Deva to be a fine listen, with good frequency response, a solid stereo image, and it was comfortable to wear. I found the deepest bass to be lacking in comparison to more expensive headphones, but I didn’t find the bass thin, just that it didn’t go as deep as other headphones I’ve heard.

Highlights

HIFIMAN DEVA PRO ACTIVE HEADPHONE WITH BLUETOOTH

  • Attractive to look at with a high-quality build.
  • Retains HIFIMAN planar design, at which they excel.
  • Open back design adds to the spatial qualities of the headphone.
  • Can be used as either balanced or unbalanced headphones.
  • Lightweight and comfortable.
  • Bluetooth module (called the Bluemini) has 7-10 hours battery life and is rechargeable.
  • Excellent highs with a slightly forward midrange favoring voices and acoustic instruments.
  • Bass is solid, but not as deep as more expensive headphones.
  • I dislike the add-on Bluetooth module. I expect customers would be happier with an all-in-one unit, like the design of the Apple headphones with the Bluetooth radios onboard. HIFIMAN says the Bluetooth module is a means of future upgrades where built-in units don’t offer the same flexibility.
Introduction

I’ve been listening to HIFIMAN products for several years. They’ve long been a champion of planar designs, and all I’ve tested over the years have been excellent and a high value for the money. Over the last few years, HIFIMAN has been producing headphones with new materials, non-planar designs, and offering both open and closed designs. They have also continued to push the pricing envelope. While top-of-the-line HIFIMAN headphones cost thousands of dollars, we are now seeing some more high-quality, moderately priced headphones emerge.

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The Deva Pro falls into this category, and clearly, it’s going to expand the customer base of this respected firm.

HIFIMAN DEVA PRO SPECIFICATIONS
Frequency Response:

20Hz – 20 kHz

Impedance:

18Ω

Sensitivity:

93.5dB

Weight:

360g

BLUEMINI R2R BLUETOOTH MODULE SPECIFICATIONS

Bluetooth version:

Bluetooth 5.0

Bluetooth chipset:

Qualcomm QCC5124

DAC HIFIMAN HIMALAYA

Frequency Response:

20Hz – 20kHz

Signal to noise ratio:

114dB

Battery life:

8 hours

Net Weight:

25g

Transmission codecs:

LDAC, aptX-HD, aptX, AAC, SBC

Retail Price:

$329.00

Website:

Company Site

Company:

HIFIMAN

SECRETS Tags:

HIFIMAN Review 2022, HIFIMAN, Deva Pro, open-back headphones, planar, Bluetooth, open back

Design

The Deva Pro has some innovative upgrades over previous HIFIMAN headphones. Those upgrades are mainly in the design of the drivers.

HIFIMAN says the Deva Pro uses what it calls Stealth Magnets. Their special shape enables sound waves to pass through the magnetic structure without generating any interference. The company claims its advanced magnet design reduces wave diffraction turbulence that degrades the integrity of the sound waves, giving lower distortion. The company also says its NEO “supernano” Diaphragm (NsD) is 80% thinner than previous designs, giving the listener fast response times and more detailed imaging.

The sockets on the Deva Pro can accommodate both a dual-sided unbalanced 3.5mm cable and a single-sided balanced cable that only plugs into the left socket. The included Bluetooth accessory, which HIFIMAN calls a Bluemini R2R, also plugs into the left socket.

The Bluemini R2R has a built-in DAC with very low energy consumption and high sampling rates. The Bluemini supports all the current Bluetooth protocols, including LDAC, aptX-HD, aptX, AAC, and SBC.

The headphones have a silver and black color scheme, with excellent build quality. The materials used are aluminum and faux leather. There is a minimum of plastic used, and what plastic there was seemed robust and rigid.

Setup

There’s not much to setting up headphones. The Deva Pro comes in a very nice package, typical of the quality I expect from HIFIMAN. The headphones are wrapped in a cloth-covered form-fitting case, with instructions and the Bluemini.

Before using the headphones, you will need to charge the Bluetooth module if you are using it. There’s a provided USB A to USB C cable, but no power supply. Any USB-equipped wall plug or computer should get them charged.

In Use

The first thing that struck me is that the Deva Pro is very lightweight which is an important comfort consideration. The pads fit around my ears with no pressure or overlap.

For normal use, connect the provided 3.5mm cable and you are on your way. The other end of the cable has a hybrid 1/4” phone jack, and inside is the now more standard 3.5mm plug.

For Bluetooth use, you plug the charged Bluemini into the proper jack on the headphones. Pairing to your sound source is handled by a pairing button, and when you are paired properly, the Bluemini will flash blue every so often to assure you that you are connected.

Listening to the Deva Pro headphones

I mainly auditioned these HIFIMAN headphones using a direct wire connection. While wireless Bluetooth can be very convenient, I wanted to hear these headphones without an extra DAC in the middle of the audio chain, and without any of the even slight compression, the Bluetooth codecs have. Playback is from a FiiO M15 digital audio player which has a first-class DAC. I also listened via Bluetooth provided by the M15 and the Deva Pro Bluemini module.

Overall, I liked the sound of the Deva Pro headphones. They sounded just a bit warmer than the other HIFIMAN headphones I’ve auditioned, which is not a bad thing. Compared to more expensive headphones, they are a bit thinner in the deepest bass, but I did not find them lacking in bass, it just wasn’t as prodigious as the best headphones can provide. Soundstaging was quite good, especially side to side. I felt the midrange was a bit forward, an advantage for vocals and acoustic instruments. For symphonic listening, I would have preferred a slightly less forward midrange. The treble response is very good. Clean and airy.

Here are some of the things I auditioned. All were FLAC files, rendered at CD quality or better.

Eric Whitacre: Light and Gold

Eric Whitacre “Light and Gold”

Stunning choral music you can get lost in. This is a CD-quality FLAC rip, with a very nice image that is stable. One can hear the acoustics of the recording venue. Very nicely rendered by the Deva Pro headphones.

Isle of Dogs: Original Soundtrack

Isle of Dogs “Original Soundtrack”

I tried the track called Taiko Drumming for starters. A very nice low end, no breakup. There’s a chorus and other acoustic instruments too. Everything is in sharp focus. I have heard other headphones go deeper on this track, but the bass was still solid and did not sound strained.

Let There be Light: Mike Oldfield

Mike Oldfield “Let There be Light”

– new age music, but Oldfield never gets old. Mostly electronic, and some vocals heavily processed. Separation is great on these tracks. No complaints. The Deva Pro acquitted itself nicely.

Morph the Cat- Donald Fagen

Donald Fagen “Morph the Cat”

Always a good pic for audiophiles. This is a high-resolution FLAC album. Separation is very good; voices are well served by the slightly forward midrange.

Vaughan Williams: Five Variations on Dives and Lazarus

Vaughan Williams “Five Variations on Dives and Lazarus”

Lovely strings, but here’s an instance where I would have preferred a just slightly flatter midrange. This is a Chandos recording, and here they do their usual fine job of engineering.

Conclusions

As you’ve noted in my commentary, at just above $300 this is not the best headphones I have ever heard. But it is certainly the best, most musical headphones I’ve heard at or near this price. HIFIMAN is to be complimented on the Deva Pro. I think it will be sought after by audiophiles and people who want their music served up by wireless Bluetooth.

Likes
  • Excellent build quality.
  • Objectively good sound at any price, and superb at this price level.
  • Bluetooth quality is excellent. Users will be hard-pressed to tell the difference between wired and wireless music.
Would Like To See
  • A carry case. I think this is the kind of headphone people will want to use on the road.
  • I’d like to see the Bluemini incorporated into the body of the headphones. Apple has done this, as have others. The separate piece is just something to lose.

The HIFIMAN Deva Pro Headphones are a small triumph at this price. We know HIFIMAN knows how to create brilliant gear when cost is no object, and over the years they have reduced prices and still offered great sound. These Deva Pro headphones are a case in point. They are well built, offer wireless and wired connectivity, are comfortable on the head, and the open-back design doesn’t cut you off from the world. In 2018, I reviewed the HIFIMAN Ananda headphones. At just under $1000.00 they sounded good, and I did not feel they were overpriced. The Deva Pro headphones don’t quite match the frequency response of the Anandas, but they come close at a fraction of the cost. They don’t go as deep, the highs aren’t quite as smooth, the imaging is not quite as sharp, but they still offer excellent sound at a very attractive price.

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A word about the Bluetooth module

The Bluemini R2R sounds very good. HIFIMAN says a lot of work went into the custom-designed DAC and listening to the same tracks I auditioned with the wired hookup, I was hard-pressed to hear a difference. I could detect a very slight difference when auditioning the highest quality tracks in my collection. I found a slightly compressed dynamic range and a very slight reduction in the highs. Having said that, it was the best Bluetooth sound I’ve heard.