Product Description
- Brand Model : Amptata M2
- M2-300B suitable for 300B 2A3 101D 102D VT25 VT52 275A 6A3 71A 801 201 26 10 50 250 45 75 205 104 etc.
- M2 test tool is through multimeter get tube's mA
- Measures the cathode current of the power tube for bias reading (at low voltage side of the tubes )
- High-Quality 24K Gold Plated Banana Plug Male Speaker Cable Connectors
- M2 wire length about 65cm. Ceramic socket and plated silver for long life
Note:
- 01:Keep the amplifier silent during use M2,
- 02:Turn off speaker sound,Do not turn on sound play songs,
- 03:Insertamplifier just is let the tube get power and warm up,
- 04:Read most accurate's tube cathode current in working state
How to use:
- 01:Set multimeter to the mA range (most common is 200mA)
- 02:M2 Black banana plug into COM jack of multimeter
- 03:M2 Red banana plug into mA jack of multimeter
- 04:Turn off amplifier.
- 05:Remove the tubes then plug in M2 socket.
- 06:Then plug M2 in amplifier socket.
- 07: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.
- 08:Read the bias measurement.
- 09:Matched tube should be no more than 2 or 3 mA difference for a good balance between the tube