5 RCA 12CR6 Vacuum Tubes NOS NIB Sleeve Of Five Treasure Press

5 RCA 12CR6 Vacuum Tubes NOS NIB Sleeve Of Five Treasure PressThis sleeve of five new old stock, new in box RCA 12CR6 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

It has an engraved / stamped base

These tubes have great bass and sparkling highs and Pete Ham's voice is warm and clear as a bell

This pressing has moderate surface noise audible in quiet passages and in moderate passages

Both tubes measured 72 where minimum (65%) is 55 and 100% 85

This lot of four Ken-Rad number / type 58 stamped- / engraved-base tubes was tested on our Paul Hart-calibrated TV7/U for shorts

Philco-LABELED 6K6GT tubes was tested on our Maxi-Matcher 400 volts on the plates and a bias of -36 volts for shorts

Their filaments are spirally-wound -- hence the "S" in "ECC83S" -- for low noise operation

It has very light surface noise

new in box RCA 6AS8 tube tested to spec on our Paul Hart-calibrated TV7/U

It teats below spec but should work fine in many applications

new in box GE 6GF7A tubes tested to spec on our Paul Hart-calibrated TV7/U

It measured 50/46 where minimum (65%) is 40/40 and 100% is 62/62