The L2's leak sound guess its their semi openness , its a shame really cause they fit so well on the head ( no chance of falling off on the move ) I can't see anyone wandering around with the AKG's .... hey don't get me wrong they would certainly look brill and turn heads.... but they don't clamp they perch, a good seal can be made by bending the headband slightly so as You say the bass is complete and fast and very tuneful, a tweak to the EQ and the sub bass really shines, but as a portable.... not sure.....they are certainly efficient .....
The L2's feel great , seal great, and would be ok on the move for sure.... just be aware others will get a listen too....
Both are great home cans...... its hard to say which anyone would prefer..... for me Rock sounds better on the AKG and more softer accoustic on the L2's... if I had to be critical i would say the L2 is a better headphone.... but its close....
The AKG,s need a good burn in....left em on loop for 24 hours at a fair volume to warm them up.... they like to be broken in..... the bass improves and the overall musicality gets more enjoyable....
I am really happy with both of them, cause they a made music more fun .... and after all thats what counts at the end of day....
it's worth pointing out that both these babys get lot better when connected to a real hifi ... by that I mean a Tube amp and expensive DAC.... I am guessing I havent heard the best they can be yet...... in terms of value for Money
£109 for the AKG's and £151 for the L2's is very cheap for the quality on offer....
and i wouldnt hesitate in recommending either headphones......They are far better than anything I have ever owned before !!!
I could compare them with my Naim setup and AE'1's in terms of enjoyment.....and the neighbours dont get to hear as well LOL
Have some new tubes arriving next week for the MC34-B Pre and Drive stagesso will be interesting how that goes....
I have some M1 Bluetooth.... now if we are talking "on the move"