SpiritOneI have only a short time of listening to the Porta Pros I received. I'm also new to headphones as I love good audio but don't have the money to toss into my vehicles like I used to do. 😞
I have had a set of Final Audio E2000s I've been enjoying for the past few weeks. I also just received a Fiio Aspen 2 E17K last week. So I'm playing around with those off my phone. The Finals, which are IEMs(still trying to understand the true definition of an IEM), take to the amplification very well.
So I tried on the Porta Pros without amplification first. They do sound nice, well balanced, without strong highs or lows. I also did not feel amplifying them brought any great benefit. It is certainly louder, but they were loud enough off my phone(OnePlus One). In fact, I was overdriving them pretty easily, where the Finals soaked up everything I threw at them. And those are listed @ 16ohm...