Beam Power Tube
These tubes were manufactured in the 1960's and are probably
the best sounding 5881 tubes ever made!
The Tung-Sol 5881 Vacuum tube is a
glass octal type used in the output stages
of radio receivers and high-fedelity audio amplifiers.
They are also used quite extensively in guitar
amplification. It was built to rigid
military standards and will tolerate higher
voltages than any 6L6. In fact, they're frequently
used as replacements for the old 7027 model in vintage
Ampegs. 5881 tubes require an octal socket.
Electrical Data:
Heater Voltage ......................... 6.3 V
Heater Current ........................ 0.88 A
Maximum plate voltage .................. 250 V
Maximum plate current .................. 73 mA
Preferred Substitutes .................. 6L6GC