Description
NOS RFT? ECC82 - 12AU7 Price is for 1 NOS tube. Seems like German RFT made during the 1970's. With big halo O-getter and gray anodes. Tested STRONG as follow Ia1 = 10.2 mA | S1 = 2.3 mA/V | Ri1 = 7.4 | μ1 = 17.0 Ia2 = 9.5 mA | S2 = 2.1 mA/V | Ri2 = 7.8 | μ2 = 16.4 Tested under: Uf = 12.6V | Ua = 250V | Ug1 = -8.5V Good starts at Ia=7.0mA and 100% is Ia=10.5mA Nice German preamp tubes! Shipping will be Airmail registered with tracing number. Other shipping methods available on request.