Pros: Bass, Over all sound, Design
The first thing you notice when opening is the awesome and retro design, it looks good a feel well made. The tin opens nicely and inside is the bass boos switch. on the outside is the volume knob which again feels good to use. the is the input as well as the output socket and then on the side you have an Blue LED light (which you can ask to be customized) and if you brought the charging version the charge socket as well. You are reccomended to burn in for 75 hours to get the best quality out of them so after doing so i plugged in my shure se420s and the used and old monster cable (planning on buying a LOD soon) to connect up to my iphone 4.
Having never used a amp before i was not sure how it was going to preformand as i followed the instruction setting my iphone volume to 70% and the controlling the volume from my iphone i put my music on shuffle and started to understand what it was about. at first i left it with the bass boost off and there was already a noticable difference. i then decided to switch the bass boost on, expecting something that was going to be overpowering and make my music muffled i was overwhelmed when it done none of the forementioned and gave me just a little bit of extra kick that i think was needed with my shures.
The sound quality was great without the bass boost and even better with it and will hopefully in the future try it with some new and different headphones to see if i get the same or better an effect.
overall i think that it was great value for the money is small and easy to carry and makes my headphones sound better what more could i want!