I was wondering if I would get called on that!
I very nearly posted a message culpa. I probably should have done.
In all my insistence that the iPhone was all that was needed I realised that I had never used anything that was not an Apple device.
I looked around the classifieds and came across the Onkyo HA200 Amp/DAC.
Having read the reviews it appealed to me because it is from a mainstream manufacturer rather than an audiophile boutique outfit.
As I expected it is far from neutral and definitely alters the sound of the iPhone.
I really wanted not to like it. Mainly because carting it around is a PITA but also it has forced me to reevaluate my ideas.
I felt that I had a bit of a position on here. Trying to stop people getting carried away with expensive gear.
Now I am not so sure.
It's not a nice feeling suddenly realising that I don't know what I am talking about!