Description

Product Description Brand Model : Amptata T4 Global voltage standard ( 100V~240V ) 9pin probes cable lengh: 55cm T4 tester can measures the cathode current of the power tube for bias reading (at low voltage side of the tubes) T4 can test many types. At present, we have 8pin and 9pin probes options This listing T4 suitable for EL84 6BQ5 6P14 etc. T4 can get the reading direct from the pointer-type current meter. It does not need any convert from mV to mA What's in package? 1pcs T4 Tester Body 2pcs 9pin Bias Current Probes Note: Keep the amplifier silent during use T4 Turn off speaker sound,Do not turn on sound play songs Insertamplifier just is let the tube get power and warm up Read most accurate's tube cathode current in working state How to use it? 01: Turn off amplifier. 02: Remove the tubes then plug in T4 tester probes socket 03: Then plug T4 tester probes in amplifier socket 04: Turn off speaker sound turn on amp (Keep amp silent) and let tubes get warm about 5 minutes.Just turn on the amplifier without let speaker sing 05: Read the bias measurement 06: Two pointer-type current meters will show up two tube's reading 07: If tube reading is same.That's perfect. If reading is different. Should be no more than 2 or 3 mA difference for a good balance between the tube