6 US-Made Number / Type 89 #89 Vacuum Tubes Valves Lot Of Six NOS-Testing 4 Lot Of Four They are dead quiet when

They are dead quiet when the SACD player is muted but are not recommended for this amp -- which was designed for 6SN7s -- as they not only break up early

This pressing has light surface noise audible in quiet passages and barely-audible in voice-level passages

It rattles but is otherwise OK

mesh plates

please select “3” from the quantity box

6 US-Made Number / Type 89 #89 Vacuum Tubes Valves Lot Of Six NOS-Testing 4 Lot Of Four They are dead quiet whenThese six new old stock testing, US made number type 89 tubes were tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Thery measured as follows where minimum (65%) is 39: 52, 54, 56, 57, 60 and 62. 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