As per topic. I have an iPod and an MZ-N10. I've previously owned an N1, R900 and an R91. I like to use my Sony E888s when out and about and hence rely on the performance of the EQ and the headphone amp to fully realise the capabilities of the buds. I've found the iPod to be lacking and the N10 wasn't too crash hot. I also auditioned the NH1 when it cane out and I was very impressed with that model. I also recently purchased a pair of Sennheiser HD-600s although I don't expect to be able to run these unamp'd, it would be a nice thing to be able to do So, how does the RH1 compare to the units I am familiar with? Is this HD amp all that it's cracked up to be? Thanks.