I have tried the AKG K1000's with a number of amps including the famed EAR V20 and the best sound quality has been from the humble X-CanV2! Unbelievable but true! I think this may be something to do with the simple circuitry employed in this amp which makes the sound more immediate and dynamic...

Do the Etymotic ER4P triflanges fit the UM2's? Has anybody tried these? How do they compare to the other more normal Shure/Westone sleeves?

Having trawled through this forum, I am getting mixed messages with regard to improvements to be had by adding a portable amplifier to a pair of UM2 phones. Have any forum members tried these with amplifiers and has there been a significant improvement? Which portable amplifier is the most...