You are bidding for 1 pair 6n30p/6H30P-Dr NOS Testing Values Super rare, Russian millitary, code as shown in the photos. They are carefully tested on my TV-7/U and my hifi system before being packed. If you are not sastisfied, please send them back with full refund within a month. I guarantee the best quality of my tubes. Thanks a million

Product information "6N30P-DR / 6H30n-DP"

6N30P-DR / 6H30n-DP Super Tube

This rare 6N30P-DR (made from 1967 to before end of 1992) includes gold grids and is the absolute top grade of the 6N30 tube type rated for 10,000h operating lifetime. The DR grade means this tube had to pass rigorous testing for space and military applications within the Soviet Union. The DR grading does designate it to perform much better than the 6H30P-EB or EV versions. Later reproductions of this tube (since 1999) never reached same quality level.

Our stock has been produced not later than 1992. The 6N30P-DR is used by worlds highest quality audio amplifier manfacturers including Audio Research REF610, REF 5, REF 3 series, CD7 + CD8 player und REF2 phonostage for example

P/S: The shipping fees in the listing is by regular mail

(normally Vietnam post) taking from 12-25 days depending on buyers' local

customs. To some regions, it can take even longer than that. Besides, Vietnam

post is not always available to some countries in South America, Northern

Europe or Africa. Please ask me before paying. If you want to use express

shipping services like DHL, Fedex or UPS express taking 3-7 working days, you

have to pay an extra of around $60. Please let me know so that I can send you

an invoice. If the item(s) purchased may not arrive or be faulty, please don't

hesitate to contact me before opening cases on Ebay. I am more than willing to

reach to a solution and make you completely satisfied. Thanks a million