The simplicity of the design and Senn's sound signature brought me to momentum as well.
That's just my quick, first feeling, thoughts from one hour shop encounter, so I don't have much experience with them but I trust my guts.
I feed them from Note2> flac 16/44>neutron MP> headphone OR usb audio out> otg usb> Fiio E7 dac> Fiio E7 amp> headphone.
So went to store yesterday, spend one hour testing new momemtum and amperior and, comparing directly to my old DT150, just wasn't 100 % sure about them, everything was there but I guess was just looking for something else in sq, they both great phones and luckily the had just display once...
I wanted momentum as a portable and as much I love the design and sound, I don't like cable very much so will replace it and had a feeling that in those moments when I can't listen to them I couldn't wear them on my neck much, they are still on bigger side for portable use, to beauty to stuff them to the bag and very nice protector case is very big as well.
For home use their nice leather pads are soft and fit my ears but there is very little space so ears might get warm and possibly sweaty in prolonged home use.
I know they are beauty and simple design is best I've seen so far
but I had my doubts, probably, for the price high expectations as well....
Then my uncle came to replace apple ear buds which just can't stay in his ears. I suggest him over ears instead of buds and only in store with apple control were Sennheiser PX100IIi.
OMG what a gem of a phone... in first minute they spoke to me. I dare to say that this fresh, from the box, not burned in PX100IIi, moved me more then Momentums Amperiors... all in first minute no doubts and for 80euro with iphone controls and 26GBP !!!!!! on amazon.co.uk without controls... these are my portables now together with Heirs IEM 5.0.
They drivers fold flat so I can't fell it on my neck, great on ears, sound is miracle for the price, and you can fold them to fit small sunglasses case for transport.
Lads help me on that one as I seems to not trust my ears now! Does any one compared A to B Momentum with PX100II??
Mad Dogs vs Momentum for home use ??