Good Luck Orkney, I would do my best to stay away from the grey market goods.  I made that mistake myself once and only once years ago with an Accuphase DP-78 CDP, that went bad.  I had to spend $600.00 to ship the unit back to Japan and back, and wait forever.  Plus, rightly nobody wants to...

Dear Orkney, I've had a 300xs for a couple years..  The already nice stock tubes were replaced with EL-85 Mullards circa early 50's and same era Sylvania 5751 in mine.  I have a set of 60's Telefunkens to try too.   If I am correct, you need (2) matched sets, not a Quad.  Jonathan Halpern was...

Hey Clayton, Did you get your CS300, yet?  You'll be happy you got yours local vs. grey market if any service ever needs done.   May I ask what Cans are you using?  The Leben matches with with my Grados, but wonder about trying something other.   my best  

Dear TDL, I use a Leben 300 XS.  My phone are Grado 1000's.  I can't tell you how they sound on one set of cans vs. others.  What I can say is that the Leben sounds amazin.  Tonal, detailed, sweet.  Plenty of punch and drive.  I think that is amazing.  I  use the Phones during the work day...