newworld666
Headphoneus Supremus
I don't know the zx507... but I am almost sure that with Sony you will never have drops/disconections every 15 minutes (depending your wifi environment) from your NAS or your music service, you won't get so much distortion over 135/150 with demanding headphone, such slow navigation through the menus with wifi build on an obsolete 802.11g hardware, such sharp angle box, small characters to read, ...
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