Original owner. Matched pair of KR Audio PX-4s with very light use. I used them for about 300 hours in the DHT (preamp) stage of a Vinnie Rossi LIO. so they have never been driven hard. Great tubes! . . . but recently replaced with some Takatsuki 300Bs.
Will be shipped nested in foam inserts in the original KR Audio box, with that box surrounded by soft foam inserts inside another box. Paypal, shipping and insurance are included in purchase price of $500
