Product Description
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Brand Model : Amptata T4
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Global voltage standard ( 100V~240V )
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Octal 8pin probes cable lengh: 55cm
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T4 tester can measures the cathode current of the power tube for bias reading (at low voltage side of the tubes)
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T4 can test many types. At present, we have 8pin and 9pin probes options
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This listing T4 suitable for EL34 KT88 6L6 6V6 5881 6550 KT66 KT100 KT120 7027 etc.
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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?
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1pcs T4 Tester Body
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2pcs Octal 8pin Bias Current Probes
Note:
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Keep the amplifier silent during use T4
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Turn off speaker sound,Do not turn on sound play songs
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Insertamplifier just is let the tube get power and warm up
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Read most accurate's tube cathode current in working state
How to use it?
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01: Turn off amplifier.
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02: Remove the tubes then plug in T4 tester probes socket
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03: Then plug T4 tester probes in amplifier socket
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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
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05: Read the bias measurement
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06: Two pointer-type current meters will show up two tube's reading
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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