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maximumsid
49
Dec 11, 2017
Oh, and Hifiman recommends a burn in period of 'at least 150 hours' (in the 400i manual). Guess I'll unlock their full potential by next week.
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NakedChinese
45
Dec 13, 2017
maximumsidEvery Chinese audio manufacturer prescribes burn in in the user manual. No exception
zhouharvey
179
Dec 19, 2017
NakedChineseNo. If you are rich enough to buy their Susvara or HE1000, they are already burned in for 200 hours for you.
GrizzledGeezer
50
Jan 1, 2018
maximumsidMy pair arrived a few weeks back. I gave them a brief listen with the SoundBlaster E5 and was impressed. Then I saw the advice about 150 hours' break in! This was not a complete surprise, as I'd discovered the need for breaking in planar-driver headphones 30 years ago when reviewing for Stereophile. Playing high-volume noise through them overnight was all that was needed. I found an Advent 300, and started the breakin using KING FM. I stopped at about 100 hours, and tried them directly connected to my Sony D-FJ75TR Discman. Not only was the volume just barely adequate, even with the output all the way up (again, no surprise), but the sound was dull, bass-heavy, and lacking "punch". As the Sony was never designed to drive demanding headphones like the HE-4XX, I connected the D-FJ75R's optical output to the E5 --and there was the sound I'd expected.
I bought STAX electrostatic earphones some years ago. They came with their own high-voltage driver amp (about the size of the E5), but no DAC. At that time, the STAX cost about what the E5+HE-4XX does now. (The STAX currently goes for about 40% more.) The HifiMan is not only more comfortable (the STAX has silicone thingies to make a good seal; a doctor had to remove one that got stuck in my ear), but the presentation is more natural and less in-the-head. My preference is for highly accurate, finely detailed sound. The HE-4XX is warmer, without being dark or murky. I can imagine 'phones that come closer to literal accuracy, but who cares? Without something "better" to compare the HE-4XX with, there is nothing to criticize about their sound. * (That is a compliment, not a waffle.) With a decent amplifier, they're suitable for monitoring. And they're great for listening "outdoors", if you don't mind schlepping such a large pair of cans. In terms of bang for the buck, they outclass the STAX.
* Just to clarify the point... If you know what live instruments sound like, the HE-4XX is obviously a bit on the dark side. This isn't a big deal, especially when you consider that many circumaural headphones sound as if the instruments are right next to your ears.
maximumsid
49
Jan 1, 2018
GrizzledGeezerYes, even I was quite surprised by how good these serve the purpose of monitoring too, I can easily edit the audio for my YouTube videoes, something which isn't easy for open design headphones. These really strike a phenomenal balance of natural presentation and open soundstage while being extremely detailed and tonally balanced at the same time. Even voices in movies/videos sound incredibly detailed, and even the busiest parts of my library are handled perfectly. Almost like upgrading from a 1080p to a 4K monitor. I think mine are burned in for around 50-75 hours by now and they already sound incredible.
I ran them with my Fiio E10K, and the sound was terrible, even though on paper E10K can run HE4XX, then I bought an O2 amp and only then I could appreciate how good these are. Right now I am using Fiio E10K as a DAC, so I am wondering if getting a JDS Labs OL DAC (Or Massdrop SDAC) will make a difference.
Still I find them a little too heavy for when Hi-Fi audio isn't a priority for example while watching videos on YouTube, and since I also like the laid back nature of my HD598, I was wondering if getting HD6XX would be worth it for 'non critical listening'.
I personally found HE4XX to be very neutral, though I only have experience with HD598, my M50x, and my Mackie Monitoring Speakers, and these are my first mid-fi headphones.
GrizzledGeezer
50
Jan 2, 2018
maximumsidIf I might add another point... I've owned STAX Lambdas for many years. They're driven by the T1 hybrid amplifier (the all-transistor amp is duller and less-detailed) and the ED-1 diffuse-field equalizer. (Such EQ is needed for any high-quality headphones, but the EQ varies with the 'phones, so it isn't practical to build a "one curve fits all" circuit into headphone amps.) In terms of detail and transparency, the Lambdas are superior to the HE-4XX. The catch is that the Lambdas have a coloration I can only describe as "mechanical". (Don't ask me to explain. I once compared them with Acoustats, and the difference was obvious.)
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