THE GREAT MULLARD MAGIC BLOG — ECC83
Posted by STEVE MYCIUNKA on
You can read more about this Noval based twin triode on one of my valve product pages but here, today we have an excerpt from a Mullard 1954 press release extolling the vital statistics of this versatile and today revered device:
Posted by STEVE M on
In late 1952, a new range of Mullard B9A Noval based valves having 6.3V heaters were introduced aimed at use in audio amplifiers. PRE-AMPLIFIER - type EF86 now replaced the EF37A or EF40 having similar charcteristics to the EF40 with a gain of up to 140 being achievable. The heater of the EF86 is rated at 6.3V @ 200mA. DOUBLE-TRIODES - three new devices were made available - the ECC81 being a medium impedance valve, the ECC82 a low impedance and the ECC83 a high impedance. All designs have independant cathodes for each section, centre tapped and capable of operation...