4 RCA Number Type 43 Vacuum Tubes Shoulder Shape NOS NIB Lot Of Four Ampoule Buis 12AX7-size tube shields is in

12AX7-size tube shields is in excellent shape

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

hanging filaments

new in box Amperex 6R3 / EY8 tubes tested to spec on our Paul Hart-calibrated TV7/U

4 RCA Number Type 43 Vacuum Tubes Shoulder Shape NOS NIB Lot Of Four Ampoule Buis 12AX7-size tube shields is inThese four new old stock, new in box RCA number type 43 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