@benandfaith
I've got the HTC m7 and while it can't get the Havi to loud enough on it's own it sounds great combined with the nx1 so I'd give it a try with your m8.
I've got the HTC m7 and while it can't get the Havi to loud enough on it's own it sounds great combined with the nx1 so I'd give it a try with your m8.