I was pretty happy with the 6i's. I am wondering if I should spend almost twice the amoung and go for the 4P's.
I am concerned about the output level, seems to be a little lower than the 6i, and I do listen without amplification to some recordings from CD sources with quiet mastering.
Also, how does the bass on 4P compare to 6i?
And what about those new hf5 IEMs? They cost as much as the 4P's.