http://www.gradolabs.com/

I have the SR325i, they range from entry level to silly money, SR60 is the entry level.

Try here for prices

http://www.superfi.co.uk/index.cfm/p...y/68/special/1

Stax ear speakers arent exactly widely available, depends how much you want to spend on whether its worht considering Stax or not.

As regards amps, theres too many to list, but a few to consider would be Project, Creek, Grado, Musical Fidelity.