Tung-Sol Number / Type 38 #38 Vacuum Tube Engraved / Stamped Base Globe / Balloon Shape NOS-Testing

Tung-Sol Number / Type 38 #38 Vacuum Tube Engraved / Stamped Base Globe / Balloon Shape NOS-TestingThis new old stock testing Tung Sol number type 38 tube tested 40 on our Paul Hart calibrated TV7 U where minimum (65%) is 26 and 100% is 40. 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

These three US-made milspec VR-150 / VT-139 / 0D3A tubes tested to spec in our Hickok 800

gas and transconductance

Transconductance readings are 46

5 record cleaner and then played it on my Rega Planar P1

I am playing them in my Sound Craftsmen RC-2 monoblocks (as an "excellent" 6SN7 substitute according to Antique Electronic Supply's "Tube Substitution Guidebook") with "Hanson Conducts Ives

Transconductance measured 44 and 48 where minimum (65%) is 35

NON-US CUSTOMERS PLEASE BE ADVISED THAT THERE IS NO WAY FOR US TO SEND YOU A RETURN LABEL SHOULD THAT BE NECESSARY

a button/thimble getter and excellent flashing

but I don't have any equipment that uses these

I am playing them as I write in my Sound Craftsmen SC-2 mono-block amplifiers with Neil Young's "Harvest" and they sound outstanding

Transconductance readings are 26

a round mica spacers and gray plates