E88CC E188CC 6DJ8 ECC88 6922 SQ PHILIPS two stars MATCHED
PAIR NOS 2pcs
Gold pins,10000 h,grey anode plates,D geter,tested
EXTRA RARE MATCHED PAIR !!!! EXTRA TUBES GREAT
SOUND!!!!!!
Many
e88cc tubes needed to pair this pair matched to several criteria: date of
production - same series and electrical characteristics. such pairing is rare
!!!
All the tubes that were sold
worked for 72 hours on the aging device to stabilize and in order to capture
the characteristics. otherwise, in practice, some tubes quickly change the
characteristics that deviate from the given values of the anode current Ia.
there can be a misunderstanding. so the tubes are allowed to work 72 hours in
order to get as much to their proper characteristic.
They are also tested for
gas, short and leakage
Note: The measurements
were carried out with Neuberger RPM370 saw and guarantee for this measurement.
The tester has its technical and electrical characteristics that participate in
the activities and measuring tubes. Each tube is a special electric circuit
that works in conjunction with the saw and this gives measured values. Power
saws with classic rectifier and everything else and it has its own impedance,
etc ... Digital testers can not give the same measurement results as the
classical tester for impedance, reactance, capacitance, conductance, the mode
power supply - Switching etc .
Date code: All tubes 7L4 / triangle8J and etched for glass
Tested for NEUBERGER RPM370,Ua=100V,Ug=-1.2V,Ig=16mA=100%
Ia = 16/15mA and Ia = 16/15.5 mA