TubeDepot Bias Scout Kit

BT-BIAS-SCOUT

The average bias job costs $40 - $60. Build your own bias adapter with our TubeDepot Bias Scout kit and you'll save money every time you set the bias on your amp.

This kit includes all the parts to build a single octal socket TubeDepot Bias Scout. Used with a basic multimeter (Get Yours Here) the finished adapter will allow you to measure both cathode current and plate voltage of a single tube position.

We recommend purchasing two of these kits so you can easily monitor both halves of a push-pull circuit.

Note: this adapter, as designed, will NOT test 7591 tubes.

 

 

 

 

 




  • Great kit with clear instructions. Worked well to bias my amp with out having to open it up. Thanks for the great tubes and products

    reviewed by: William Schramm

  • Fast delivery, great product!

    reviewed by: Jeff

  • Easy and fun to assemble and worked without issue. Very pleased with this product!

    reviewed by: John

  • A bit challenging to build - a good deal of dexterity is needed re: installing and soldering small components in confined spaces, but the instructions are very detailed and concise. Also, it was difficult "threading" the 3 wires through the supplied 1/8 Techflex as the frictional resistance makes it very difficult to "push through" the wires once you are about half-way through. Hint: first thread through a cord or guitar string, then smoothly tape the wire bundle to the end and "pull" through.

    reviewed by: Nick B

  • Have a Krank amp and no idea what the bias should be. Built this and dialed it in. Customer was amazed how his amp sounded!

    reviewed by: Cos

  • If you know how these work and how to read tube data sheets you can build these to test bias on 7591s, and other tubes that have differing pinouts than the 6V6,6L6,5881, EL34, KT66, KT77, KT88 and 6550 pinout. In all a very handy kit to build in pairs to test standard 6L6 type base tubes, or move the components around and make another pair (or quad) to test 7591s too. It is not very hard to figure out. DO NOT MIX THEM UP! LABEL THEM!

    reviewed by: Seth B