No there's no background noise or hiss. It's actually a very clean amp. Much cleaner than the c5 because the c5 I remember was not a clean amp.
I've been enjoying this over the BH. I like the more intimate vocals and details the NX1 has over the BH.
If I was going to buy my first portable amp and my choices were between the BH and the NX1. I would definitely choose the NX1.
I have not regretted spending the 30 bucks..much better than the 60 bucks I've spent on the e11. It's definitely better!
Edited by DMax99 - 5/15/14 at 3:38am