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RE: Amplitrex Tube Tester

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We replaced a Sofia with the Amplitrex. By now we've tested a few thousand tubes. We sent it back once to have the bios upgraded and some new features added such as selectable fixed bias for batch testing and matching. At that time the power supply was also updated to protect against burn out when tubes with runaway current were tested.
It has several modes of operation. Two modes are using the LCD display on the tester and is handy for quick QC of many tubes and matching. The third is as a curve tracer which requires a computer. We use mostly the curve trace function for power tubes and fixed bias for matching/testing signal tubes.
The Sofia used jumpers to configure for different tubes but the Amplitrex stores the data in an Excel file so easy add tubes and upload. For example 310a wasn't in the data file but was easily added and uploaded. It also has all the socket types we've encountered and anode and grid cap connections which are also programmable.
It's been an excellent tool for us and the batch testing funtion is very easy to use. I taught my daughter how to use it in less than 5 minutes and she can now test any tube listed in the LCD display. The display instructs the operator at every step, which socket to insert tube, etc.
The Sofia was getting difficult to use with each new generation of Windows and finally wouldn't work on any computer except an old 100mhz Thinkpad we kept for that job only. So I sold the Sofia to TJ tubes and bought the Amplitrex.
The Amplitrex people have been A-1 all the way with service and updates.
Glad you asked that because I was always meaning to post a review.

regards
Brian
Take control! DIY.


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Topic - Amplitrex Tube Tester - ubglub 18:19:52 08/20/07 ( 2)