6550 (KT88) Raytheon NOS NIB Audio Guitar Amplifier Vacuum Tubes Match Tested 2

Description

Match Tested Pair of
6550 (KT88) Raytheon NOS NIB Audio Guitar Amplifier Power Vacuum Tubes
Made in the USA
Solid gray plates, support rods, three spacers (top getter guard), grid radiators, halo wire getter frames and excellent getter flash
es
Metal base collars
Date code: K24 and M06
Excellent matched NOS test result for Gm/bias:
6.1 with bias ~42 mA
6.0 with bias ~40 mA
For Gm, 3.9 is the suggested ~60% reject point
No shorts detected
For reference we use a calibrated Triplett 3444A Tester.
Estimated delivery within the USA is from 3 to 7 business days
Our standard shipping is US Postal 1
st
class
We combine shipping when applicable