Hifi Man Sundaras!

@deep_333  FWIW I was able to drive my HE400S (98dB sensitivity) with an AQ Dragonfly Red.  The Sundaras are 92dB but still may be worth a shot if you can return the Dragonfly just in case.  Not surprisingly sound quality was significantly improved over using the 3.5mm jack from my iPhone/iPad if that’s your benchmark (I use Qobuz as a source BTW).  Incidentally I got a significant bump in performance for not much incremental $$$ by swapping the Apple Camera Adapter for one from LavriCables — very worthwhile upgrade IME.  Hope this helps somewhat. 

@soix . Thanks, i have an older dragonfly somewhere...will check it out.

@deep_333  FWIW I was able to drive my HE400S (98dB sensitivity) with an AQ Dragonfly Red.  The Sundaras are 92dB but still may be worth a shot if you can return the Dragonfly just in case.  Not surprisingly sound quality was significantly improved over using the 3.5mm jack from my iPhone/iPad if that’s your benchmark (I use Qobuz as a source BTW).  Incidentally I got a significant bump in performance for not much incremental $$$ by swapping the Apple Camera Adapter for one from LavriCables — very worthwhile upgrade IME.  Hope this helps somewhat. 

Any dongle Dac+HeadphoneAmp that can run this Sundara?

I have been researching an upgrade from the Sundara..There are SEVERAL professional reviewers who have listed the Sundara as an "A Tier"headphone in the timbre category & "B Tier"in the Technical categories of staging & imaging,making them a solid "B Tier"headphone & ABSOLUTE stone cold bargain for their meager asking price!!!
ALL my research is pointing to having to spend at least $1000.00+ to get a big upgrade in sound!

If you can stretch for the Arya Stealths they’re much better, but the Sundaras are certainly no slouch.

Another vote for the Sundara phones.

I have the HiFi Man edition XS and also Magnepan LRS speakers.

Sundara is THE under $750.00 benchmark.I've owned Audeze LCD-2C & LCD-2F,Sennheiser HD800S & started with the original budget king the HE400i..You honestly can't do better until hitting $750.00+ & then you better have the front end to drive them..

Sundaras are like the benchmark under $500. Transient response and bass are the highlights. They also take eq like a champ.

I actually went to the Sundara from the HE560’s and man what a difference.  The HE560 seemed somewhat veiled to me but had very good bass.  The Sundara are far more detailed and nuanced while not having quite the bass performance.  With that said I actually like the bass from the Sundara better.  The bass isn’t overstated but substantial.  Also the Sundara is much easier to drive.  From my Schiit Magni Heresy to my dragonfly black they just perform.  But boy do I hate the Sundara cables!

Just wanted to add that they take eq like a champ and has some of the best bass slam too.

The Sundaras are the ones that Hifiman replaced the HE560s with which were also a very good sounding headphone but had some build quality issues, if they are anything like them, they are a steal for under 5. Enjoy the music