Philips

6188 / 6SU7WGT JAN

72.00 USD

Tough Mil. Spec. twin triode amplifier tubes, ruggedized 6SL7/6SU7, manufactured in the United States by renowned Philips ECG. These fine thick glass 8 pin octal based tubes, designed for balanced high-gain DC amplifier service in critical military equipment, come with black plates and top round getters. They are glass etched 6188 U.S.A. printed in green on base JAN 6188 PHILIPS ECG 34167 USA, and coded 8626 ABB indicating 1986 production. Boxes are standard military white NATO coded 5960-00-181-0465 FSCM 82219 MFR/PN JAN 6188 under contract no. DLA900-85-G-0008-0019 A 6/86.

Condition

New Old Stock (New in box)

	Tube Matching 6.00 USD by tube
LEARN MORE WHY ? A tube may have one, two, or three internal sections depending on the purpose of the tube; somtimes these sections are all the same, sometimes they are different. Due to manufacturing and material tolerances, there may be slight differences between the original specification and the actual tube. Tube matching tests each one of these internal sections and selects tubes, compared to original specifications at manufacture, for balanced performance and good sound. HOW ? All our tubes are tested by us prior to packing on our Stark, AVO, Simpson or RF Laboratories Inc. calibrated testers. On request for tube matching, tubes are matched for Mutual Conductance in Micromhos and Plate Current in Milliamps on our Amplitrex or Radioelec Duovac testers, with results printed for each individual tube. Certain tubes difficult to test are matched for Mutual Conductance in Micromhos only on one of our regular calibrated testers. On request we can also test for Microphonics.