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595s don't need amping, and you won't gain very much from doing so, therefore a Slee is massive overkill for them. Amps don't add SQ, they're to drive phones that need power, and the 595s don't need much.
Laptop is fine for power, but soundcards are usually average. Full size phone may struggle on the ipod a bit, but I wouldn't' recommend ultra cheap amps, they're just loud buttons and can degrade sound.
I'n not a Sennfan, so don't like either phone, but the 595 will sound better than the 448. But if you really need isolation, then that's your compromise.
As for leakage, take a full size headphone off at normal listening volume and lay down so the cups aren't covered by anything. That's how loud it'll be for anyone else in the same room as you. Snuggling up to the GF with headphones playing is sure to **** her off.
Last edited by Drubbing; 19-11-2009 at 1:21 AM.
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