4 RCA Cunningham Number Type 27 #27 Vacuum Tubes Lot Of Four Duodecar TA1 28/27 and 33/26 where minimum

28/27 and 33/26 where minimum (65%) is 18/18

new in box RCA 17CU5 / 17C5 tubes tested to spec on our Paul Hart-calibrated TV7/U

audible in quiet passages and inaudible in moderate-loud passages and louder

This LP sounds great

4 RCA Cunningham Number Type 27 #27 Vacuum Tubes Lot Of Four Duodecar TA1 28/27 and 33/26 where minimumThese four RCA and Cunningham number type 27 tubes tested as low goodand good on our Paul Hart calibrated TV7 U. Transconductance readings are 25, 27, 32 and 36 where minimum (65%) is 25. 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