I would like to thank Paul from Hifi Lounge for arranging an uninterrupted long listen with the HE1 and compare it against my current favourite headphone being the Audeze LCD 4. I also have the Hifiman HE1000SE but I did not bring them with me to compare.
Setup: The HE1 was hooked up to the DCS Lina DAC through a balanced connection and the LCD 4 was hooked up to the DCS Lina Stack through a single ended connection. This means audio was playing on both headphones concurrently and I was able to AB both headphones.
Build: The headphone itself feels quite premium and very sturdy. The base unit is made of marble and the dials are really impressive by their feel and quality and you will not find a more premium build in headphone audio than this. The HE1 also comes with a hefty remote that can control the volume, change sources, mute etc. and this also feels like a quality product.
Comfort: The HE1 is very light and comfortable. It reminded me of the same comfort level found in the 800S. I still preferred the way the LCD 4 sat on my head but obviously the weight is a lot less on the HE1.
Sound: I will put down some notes I made whilst I was listening to the HE1 and comparing it to the LCD 4 below but I just wanted to state some general findings I had.
The resolution on the HE1 is simply the best I have heard in a headphone. No note is missed and the furthest notes in the background are brought forward and presented to you up front. The LCD 4 sounded a little "muted" in comparison after doing some quick AB listening your brain will adjust after a few seconds and the LCD 4 sounds fine after.
The bass on the HE1 is almost a "miracle" as its an electrostatic headphone. The bass hits like a planar and almost to the same level as the LCD 4 but with greater definition, texture and control. The LCD 4 does go deeper into the sub-bass with more of an extended rumble but its very close between the two.
The treble in the HE1 is another thing that really impressed me. The HE1 never gets too bright and has excellent and extension with the clarity and resolution of the very best. They almost made my LCD 4 sound bright but in reality the LCD 4 has a warm sound signature so that's how good the HE1 was in the treble.
The vocals were fuller, more encompassing and sweeter on the LCD 4. The HE1 really had an excellent vocal presentation but it just wasn't the same as the LCD 4 in this department. Female vocals can be a bit shouty though on the LCD 4 in comparison to the HE1 and I could keep the volume high on the HE1 without it getting too bright.
I have also never heard electric guitars sound so lifelike and natural before and it was like sitting in the room with the band. When it comes to acoustical guitars the LCD 4 is no slouch but the HE1 sounded more natural and lifelike. I believe the HE1000SE actually had better acoustical guitar timbre from memory out of both but I did not have it with me to compare.
I would say that the HE1 is the most natural headphone I have ever heard. The timbre of instruments are really impressive and lifelike but the richness of the instruments in some songs did sound better on the LCD 4. I think because its an electrostat it cannot offer you the same richness for certain instruments as the LCD 4 however, as a whole package it is really impressive. The most impressive parts of the HE1 is the bass, detail, treble, naturalness and imaging is lighting quick. I did briefly hear the Stax SR-X9000 and it was just not on the same level but for the price in comparison to the HE1 its actually a good option to go for as you are just missing that incredible bass and vocal performance.
Brief notes on songs below; (Everything I stated above mostly applies below)
Spanish guitar - Toni Baxton - vocals were fuller and sweeter on the LCD 4.
Taxi Driver album sounded better on the LCD 4. instruments had a more full and rich sound to them in comparison.
Wish You Were Here - lower than Atlantic - HE1 had the more natural acoustic guitars but LCD 4 just beat it out in the vocals as they were again a little more fuller and sweeter.
FRGT/10 - Linkin Park - Vocals again better on LCD 4. more bass rumble on LCD 4 but HE1 had the better bass texture/resolution.
In The End - Linkin Park - HE1 has more control in treble and electric guitars sound more natural than LCD 4. vocals seemed more suited on HE1 than LCD 4 on this song.
Hans Zimmer - Pirates of the Caribbean live - HE1 had every instrument placed perfectly and clearly articulated. LCD 4 was a lot more smoothed over in this regard. HE100SE would be closer but not same level as HE1.
Die Another Day - Madonna - opening claps had more force and felt stronger on LCD 4. whole song sounded better on LCD 4 which suprises me.
Fall - Daft Punk - bass seemed more defined on LCD 4 in the opening and richness of the orchestra was better on LCD 4 but more natural sound on HE1. Still preferred LCD 4 with this song.
Pump Up The Jam - Technotronics - HE1 had more natural sounding instruments. Treble a lot more controlled and I had to turn volume down for LCD 4 as the female vocalist was more harsh. Richness in the synthesised notes was better on LCD 4.
The New Abnormal - Orbital - A great bass punch from the HE1 in the opening and the LCD 4 is just behind in this regard. Notes flowing effortesly on HE1 and more boxed in but articulate on LCD 4. Both headphones presented this track with great satisfaction.
Skandalouz - 2pac - Vocals were better on the HE1 and notes/instruments were more articulated also.