6 RCA 17AY3 17AY3A 17BS3 17BS3A Vacuum Tubes Valves NOS NIB Lot Of Six 17AY3A T31 T55 It sounds very good with

It sounds very good with an occasional pop and tick audible in the pianissimo passages

This RCA Radiotron number / type 80 rectifier tube was tested on our Paul Hart-calibrated TV7/U

copper support rods and outstanding flashing

new in box milspec Sylvania JAN-0A2WA tube -- and another just like it -- tested to spec on our Paul Hart-calibrated TV7/U

It has a dimpled sheet getter

6 RCA 17AY3 17AY3A 17BS3 17BS3A Vacuum Tubes Valves NOS NIB Lot Of Six 17AY3A T31 T55 It sounds very good withThese six new old stock, new in box RCA 17AY3 17AY3A 17BS3 17BS3A tubes tested to spec on our Paul Hart calibrated TV7 U. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHTWOO" AND OR CALL OR TEXT US AT 202 372 6931 IF YOU DO NOT SEE WHAT YOU NEED OR HAVE ANY QUESTIONS. 1. MOST FORMS OF SHIPPING EXCEPT MEDIA MAIL ARE AUTOMATICALLY INSURED UP TO $100. ETSY PURCHASE PROTECTION