These are amazing cables that I have ordered and I have observed an improvement in the sound quality on my HiFiMan Sundara headphones.
Genuinely one of the best cables I have used for the ie900. Originally had issues with treble peaks and just overall harsh treble for the ie900. Ethos VI completely fixed that for me, and added a tone of excitement to the pair.
Null Audio won't fail you.
I recently purchased a 4.4 mm male to 4.4 female interconnect and as a bonus surprise Null Audio upgraded it to an 8 wire copper the same as the 8 wire Tiburon I had purchased in the past. This is a wonderful sounding interconnect that is warm with accentuated bass without sacrificing details. As always the workmanship is top notch and unsirpassed for the price in my opinion.
This is the second cable I have purchased from Null Audio, the first was a massive improvement over the O/E that was supplied with the iem's, the Aoraki is a game changer. In real terms I've only had a limited amount of listening time with the new cable compared to 3 years with the previous one, the difference is incredible, it's more musical, the sound staging sounds wider than before, it's another level, I'm delighted with the purchase and cannot wait to enjoy it more.
Cable looks and feels great. Would buy it again.