How does the impedance of headphones affect the choice of amp? Would one choose a different make/model (in a given price range) for low impedance phones than for high impedance? Are tubes better with one and SS with the other?

After constantly swapping headphones for as long as I can remember, I have finally settled on just one to listen to from here on out. The German Maestro GMP 8.300Ds are it. Not the most comfortable, but the incredible sound makes that worth tolerating. Anyone who has not heard these simply...

I currently have three pairs of headphones (HD650 for maximum open SQ, GMP 8.300Ds for closed, and ATH-AD900s when comfort is the top priority.) I have a Little Dot MK V, and my source is an Onkyo CD changer. What should I try now to get to the next level? Recable? Tube amp? Better CD...

I love the sound of my HD650s, but the lack of isolation is a big issue. I have decided to get closed phones that are not too big of a step down in SQ. The three biggest factors are isolation (which eliminates the Denons and the non-studio Audio Technicas), SQ, and comfort. I am only...

Is there any mod that can be done to give open phones (thinking of HD650 in particular) at least some isolation without ruining the sound? I keep trying to find closed phones that I like (mainly to block out the noise of my refrigerator), but so far none even come close to the awesome sound of...

I am absolutely blown away by the sound of my HD650s. Unfortunately, there are times when I am bothered by outside noise while listening to them. Is there something out there that offers sound of equivalent quality but also isolation? Note: I have read that some of the high end "closed"...

I enjoy the airiness and huge soundstage of my AD900s, but I also love the powerful bass and isolation of my Triports. I love the comfort of both. Is there something out there that combines the positive qualities of both of these without the negatives of either (and especially without a big loss...