Dear Heir Audio Team
I've received the 8.A and I'm very happy and proud of it. You guys has done a marvelous job in creating this IEM. The excitement was felt since I open the box and it's gradually Increasing. The packaging itself is great. Very sturdy, looks cool and also easy to carry.
The IEM blows my mind. I was amazed by the craftsmanship that was provided. Such fine details on each and every aspect, clearly 10/10. But, the one that makes me fell in love with her is the sound quality. Such clarity that can't be found elsewhere paired with a strong and forceful bass, it's almost orgasmic(or maybe it's already orgasmic).
I felt that the singer is in the room, and she sing me a lullaby.
I also love the noise Isolation, really great to be able to listen to your favourite music without disturbing others.
With this e-mail I would like to thank everyone from Heir Audio, especially the Wizard.
I hope Heir Audio will grow bigger and better in the future and everyone will have an outstanding day ahead.
A New User of Heir Audio Products
I wanted to drop you a not of thanks. I received my pair of 4.ai's and I'm thrilled with the sound, fit and quality.
I had purchased a pair of UE 900's. After using them for a month, I returned them. I didn't find them comfortable nor did I find them accurate. Over time, I found them to be a little muddy. The muddiness may have been a result of emphasized bass. Regardless, they didn't cut it.
I read review's of the 4.ai's on Head-fi and decided to take the plunge without demo'ing them. I couldn't be happier! The 4.ai's reproduce the original recording beautifully. Last night I listened to a cross section of music... from Aaron Copeland to Pat Metheny to Joni Mitchell. All of it sounded amazing. Whether it's the Joni Mitchell's voice, Pat Metheny's guitar or a symphony playing Appalachian Spring the detail and balance was spot on. My reference point is my home stereo system which is Linn Audio. There are no individual controls for bass, mids or hi's. The music sounds the way it was recorded, and that's they way the 4.ai's reproduce the music... nothing emphasized. Some reviews said they were a little bass light. I disagree. If the bass is intended to be emphasized in the recording, the bass is there with proper depth and force. As I switched from one genre of music to the other I was amazed at the accuracy, balance, depth and detail. The fit is very comfortable and theres's no fatigue after hours of listening. I didn't want to take them out to go to bed last night, I just wanted to listen to more music.
A recent 4 Ai user!
I have a pair of SE530's (not the 535's I know but similar enough) for a couple years now and finally made the switch to the Heir Audio 4.Ai. Similarly, I listen to a lot of classical music, classic jazz and EDM. After I got my headphones from Heir, I can safely conclude that it was definitely a worthwhile upgrade.
Standard rack - FLAC + Ray Samuels The Shadow Amp.
The 530's were great in classical music and jazz. What the 4.Ai does better here is that I think there is more clarity in the music (i.e.: The sound stage and instrument separation is better.). For example, the pizzicato from the strings is compelling for the 4.Ai, and I think that is the joy in listening to this type of music with neutral response IEM's. 530's make that happen too, but often or not, it sounds like there is a filter that covers the intricacies in the performance recording.
In the realm of more bass-heavy music like EDM (mostly progressive house and trance I listen to), the difference between 530's and 4.Ai is more apparent. Both of them aren't really suited for this type of music; you would have to look at IE80's for those. But the 4.Ai here still accurately produces the bass while maintaining the clarity. 530's are pretty muddled here in this respect and it wasn't a joy listening to this genre through them.
This short comparison may not mean much because after all, you bought the 535LTD's. But between the two, I'd definitely swear by the 4.Ai.