6 RCA 1S5 Vacuum Tubes NOS NIB Lot Of Six Beethoven It is dead quiet when

It is dead quiet when the preamp is muted and has excellent frequency response and sound-staging

The Bottlehead calls for a 12AU7 which is a pretty-different tube

new in box RCA RCA 3AT2 / 3AT2B / 3AW2 tubes tested to spec on our Paul Hart-calibrated TV7/U

These tubes have steel support rods

These two new old stock

6 RCA 1S5 Vacuum Tubes NOS NIB Lot Of Six Beethoven It is dead quiet whenThese lot of six new old stock, new in box RCA 1S5 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 COVERS ITEMS UP