We have three different grades (versions) of the Siemens E833CC.Please see the descriptions or contact to determine which is most suited to your particular application!The second is the Valvo Blue label 6201, which is one of the best tubes of any type I know- refined, dynamic, and spatial, never harsh of muddy.
This 1963 Amperex Bugle Boy 12AX7 / ECC83 tube has gray plates and a halo getter (I65 series). The Heerlen, Holland factory code is etched in the glass.
Tube tests as new with phono/V1 grade noise levels.
These have the desirable dual getter supports and halo getter frames. I just sold a pair of Telefunken tubes that came from the same factory for the same price as these.
They test very strong and close @ 95/95 100/105 100/110 on my B&K 747 tester where minimum good is 50.
The reissue Genalex Gold Lion ECC83 / B759 tube is New Sensor's modern-day effort to recreate the renowned sound signature of the vintage European original.
This Russian-made version features long ribbed plates, a dual post dish getter, and gold pins.
I have 8- smooth plate Telefunkens in a Fisher 800C receiver- the factory originals from 1965.
Those will someday be replaced with Tesla ECC803S, the frame grid copy of the Telefunken. The ordinary Philips/Amperex/Valvo ECC83 from the early to mid-60's,a tube that does everything well.3.
The orange label has the Amperex globe logo and the Heerlen, Holland factory code is etched in the glass.
This 1961 Amperex 12AX7 / ECC83 tube has gray plates and a large halo getter (I63 series).
The white label on the glass has the Amperex logo and the Heerlen, Holland factory code is etched in the glass.