6 Zenith Type / Number 58 #58 Vacuum Tubes Valves Engraved Stamped Base Lot Of Six May 17 2025 These tubes have great bass

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

I am playing them in one of my Radio Craftsmen SC-2 monoblocks as I write

These tubes have copper support rods

but the bottle is firmly-cemented to it and there is no movement at all possible

I would rate it a 6

6 Zenith Type / Number 58 #58 Vacuum Tubes Valves Engraved Stamped Base Lot Of Six May 17 2025 These tubes have great bassThis lot of six Zenith number type 58 stamped engraved base tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. They measured 40, 40, 46, 50, 50 and 55, respectively, where minimum (65%) is 36 and 100% is 56. 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