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HiFiMan EF400 DAC/Headphone Amplifier Review - There is MAGIC in this box!



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Thanks to HiFiMan for sending the EF400! They have made no attempt to influence my opinion and all thoughts shared are my own.

Buy From HiFiMan: https://store.hifiman.com/index.php/ef400-736.html

At 03:18 I misspoke, the RCA analog output is UNbalanced!

First Impressions: https://youtu.be/Stzmom5C3Tg

Reviews of Mentioned Gear:

HiFiMan Headphones…

Ananda SE: https://youtu.be/oU8SJW5-NH0
Edition XS: https://youtu.be/i624svEG2j4
Arya SE: https://youtu.be/uK8POJ5_xhY
HE1000v2: https://youtu.be/N8k9oV2lx9E
Susvara: https://youtu.be/mZJ78eXWkt0
HE6se v2: https://youtu.be/NnwqHJlAjxk

Other Gear…

Schiit Asgard 3: https://youtu.be/3HsoR1oK78M
Schiit Modius: https://youtu.be/00hvK8hez_4
Schiit Bifrost 2: https://youtu.be/dvt3iRqw1nY
Lake People G111: https://youtu.be/InnJfsLdIhU
Chord Hugo 2: https://youtu.be/95i00hn4-Cs
Cayin HA1AMk2: https://youtu.be/Hb2iS--JTvQ
Focal Radiance: https://www.youtube.com/watch?v=o1DDTtN57VQ
Sennheiser HD600: https://youtu.be/wFKiSd40jt4
Sennheiser HD6XX: https://youtu.be/865BRrqBR3Y
Beyerdynamic DT 880: https://youtu.be/gwmP7r8ffA0
Denafrips Ares II: https://www.head-fi.org/showcase/denafrips-ares-ii-r2r-dac.24901/reviews#review-25868

Channel Intro: https://youtu.be/mAEiO10iF4A
My Hearing Quirks: https://youtu.be/lIKtrGJwit0

Timestamps:
00:00 Intro, Disclaimers, Pricing
01:26 Features & Build
05:09 DAC Design
06:40 Amp Design
07:44 What's Missing?
09:30 Sonic Performance
17:01 Amp & DAC Performance Individually
18:42 Comparison to Schiit Stack
20:23 NOS vs OS
21:25 The Drawbacks
24:56 Bottom Line
25:58 But Use it Balanced!
26:35 Conclusion
Category
Audio
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