RCA Number / Type 37 #37 Vacuum Tube NOS NIB

RCA Number / Type 37 #37 Vacuum Tube NOS NIBThis new old stock, new in box RCA Number 37 tube 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 TO

They both have copious quantities of flashing

They have shoulder / ST / Coke bottles and dimpled-sheet getters

Tube One measured 32 while Tube Two measured 36 where minimum (65%) is 36

Tube One is labeled "JAN CRC-6V6Y" while Tube Two is labeled "JAN CRC-6V6

This black plate

One was made in the Netherlands and the other

They are dead quiet when the CD player is paused (I have no preamp) and have excellent frequency response

and bright

(New US-made 7C5s typically test with plate current from the mid teens to mid 30s with transconductance from 2300 micromhos or so

beefy black plates: three mica spacers for improved mechanical stability and low microphonics

This hard cover book is in very good condition

These lot of six new old stock