Price is for 1 NOS with box tube. This is vintage dual triode preamp valve made in West Germany. It has the diamond stamp on the glass bottom.
The ECC808 tube is a special quality, rugged, low noise, high reliability, long life version of the ECC83/12AX7 tube, featuring frame grid construction and different (but easily avoidable) wiring. A simple re-wiring or adapter can be used.
While the system of the ECC808 is identical to that of an ECC83, the pinout/wiring is different. If you want to use the ECC808 as Telefunken ECC83, then an adapter (see accessories) or a simple rewiring of the socket is the solution.
Tested VERY STRONG & BALANCED as follow
Ia1 = 1.1 mA | S1 = 1.6 mA/V | Ri1 = 65.6 | μ1 = 105.0
Ia2 = 1.6 mA | S2 = 1.5 mA/V | Ri2 = 60.0 | μ2 = 90.0
Tested at: Uf = 12,6V | Ua = 250V | Ug1 = -2,0V
Good begins at: Ia = 0,7mA and 100% is Ia=1.2mA
Shipping will be Airmail registered with tracing number. Other shipping methods available on request.