I just bought a used Stratos.  This is my second one.  The first one I bought new, this one I bought for my brother used from Audiogon.  I've got the amp.  It has the 120mfd cap upgrade.  It's in very nice shape and seems to sound like I remember my Stratos to sound - very good.  I'd like to know what vintage it is.
The SN# is 00-580.  It has a green circuit board.  The speaker binding posts are not WBT, like I had on mine, but some similarly heavy duty thing, heavily knurled, and also with a bearing collar.  Should I just give Klaus a call?
Thanks.
- SJ