I had a 30 to 40 minute audition in balanced with no sign of hiss on my heir 10 u and was so impressed I purchased the cma400i from the London can jam I had a good listen to some daps that cost over £2000 but decieded to keep my calyx for the time being and purchase the 400i
Thanks @Barolo, it's good to hear that the problem lies on my demo setup
I am planning to get one as well since i found them to my liking even on SE, but still waiting for my mh334 to come so i can test them once again on both SE and bal 2.5
I think this item is a really good choice for it's price, definitely worth trying for all iems user looking for a desktop dac/amp with 2.5 bal output