Ypsilon Electronics PST 100 MKII SIlver Edition

For sale is an Ypsilon PST MKII active version Silver Edition.  This is very rarely seen for sale.  The unit is in excellent shape with none of the small nicks that can sometimes happen on these aluminum chassis panels.  I owned the Copper version of this preamp for many years, and the Silver edition was a considerable upgrade.  This unit was sent back to Greece for some very recent (several months ago) upgrades that the designer has come up with, at a cost of $4,700.  Original invoice for these upgrades will be included with the sale.  I have the original blue metal case as well as outer cardboard box.  I also have a number of extra pairs of the tubes - probably 3 or 4 pairs.  I change tubes too often, hence you will have thousands of hours of backup tubes.  This unit has only a few hundred hours since the upgrades were installed.  

NOTE:  I ALSO HAVE ANOTHER SILVER WIRED YPSILON MC-26 SUT BEING SOLD FOR A FRIEND.  $18,000 RETAIL, $7,500 OBO.