4 US-Made 12K5 Vacuum Tubes Valves NOS NIB Lot Of Four 5850 Raytheon CK1122 Raysistor Control Circuit

Raytheon CK1122 Raysistor Control Circuit

I am playing them in my ArtSound single-ended 805 monoblocks with Steely Dan’s seminal "Aja" album

" Tube one has a brown base and 59-43 date codes while Tube Two has 1-17 date codes and a black base

Transconductance measured 2000/1900 micromhos for Tube One and 2000/2000 micromhos for Tube Two

crenelated mica spacers and excellent flashing

4 US-Made 12K5 Vacuum Tubes Valves NOS NIB Lot Of Four 5850 Raytheon CK1122 Raysistor Control CircuitThese four new old stock, new in box US made 12K5 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 ITEMS UP