Ok I have started listening to it at this very moment..
Listening to Afroman "because I got high" It got such a nice deep bassbeat..
Without the amp it is a little more lean in the bass and the mids are further in the back, the treble is not nearly as good, I really miss the highs from the amp, they are much more crisp from the amp..
The bass also feels more controlled from the amp..
also there is more silience in the music with the amp (no hiss)..
Now with the bass boost (from the t2) there is more bass, but it sound a little bit muffeld, it is like the difference between a subwoofer and a floorspeaker.
The mids and highs do not seem to suffer from the bass boost, but it is a bit too bassy for my taste..
Now listening to "do they know it's christmas" from band aid (the old version) I chose this song because it has a lot of different voices (and christmas is right around the corner)....
The voices are less prominent straigth from the Ipod (5,5)..
The bass is much more apparent with amp. Also the highs is still much better, the bells also sounds more real..
I can actually pick out the voices of Banarama in the choir, wich I am not able to without amp.
Blackeyed peas "pump it" this song has a good speed and is also very intense..
deeper and more bass from the amp it also feels faster and more dry, the voices are also more in your face..
I feel that the biggest improvement is in the highs and in the speed and firmness in the bass and to a lesser, but also significant, degree in the voices, but overall the E500 is much better with the amp...
If it is worth the money ?? I will have to say yes or rather yell it..Also because if you have spend the cash for the e500 you really get some value for the small amount of money, that the amp costs..
I'll recommend that you get it from ALO he's a sponsor, and it looks very nice with the laser engraving, also Ken is a very nice and fast guy..
BTW. I think that the X1 is a better match for the E500.. FWIW
But that is probally because I am more to the mids and the highs in the music, I just want the bass to be present/firm and deep, I am not a basshead..
Feel free to ask if you want me to elaborate on my inpressions..