Tight current matched pair RCA 6973 tubes test NOS

Selling some of the best tubes from my personal collection. More to come, so keep an eye on my other listings or message me if you're looking for something specific.

NOS testing and identical current matched pair of RCA 6973 tubes, drawing the same current to within .1ma with 350vdc on the plates. These have been backups in my collection for years. Increasingly rare and hard to come by, some of the best sounding tubes ever made with chimey cleans and a distinctive mid-range bark when compressed. A must have for your vintage Valco Supro and will bring a whole new dimension to the reissues and hi-fi tube audio running 6973's and 6CZ5's. The current EH 6973 does not sound or perform the same and is not nearly as robust and long lasting.