Description

You are looking at a brand new SRS BIAS TOOL for EL84/6BQ5/7189 tube amplifiers. KEEP YOUR VINTAGE OR NEW TUBE AMPLIFIER IN TOP WORKING CONDITION! This is the SRS BiasTool- a great device that no tube amplifier owner should be without- even if you decide to let the pros do all of the work inside of your amplifier, the BiasTool is an invaluable item, providing a quick indication of how your expensive output tubes are working in your amplifier... The BiasTool testing probe works with most tube amps using 9-pin EL84 and similar output tubes- measuring the amount of current which actually flows through your power tubes, using your volt/ohm meter, which can be purchased separately for as little as $15 dollars, depending on which model you prefer(we do have meters available, please inquire if you need one). Works with EL84, 6BQ5, E84L, EL84M, EL84S, 7189, 7189A , and more! This BiasTool is *NOT* for amplifiers based on 8-pin 6L6/6V6/EL34 type tubes- it is only for the 9-pin miniature tubes such as EL84/6BQ5/7189- please see our other listings for the BiasTool device for the larger output tubes. If you are unsure which device you need, or what type of tubes your amplifier uses, please contact us prior to purchase, and we'll help you out, no problem.