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  The Bias King™
  A Diagnostic Tool for Measuring the Bias on Vacuum Tube Amplifiers
 


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Two BIAS KING models to choose from:

Please Note: We do not sell BIAS KING units directly. They can only be purchased from Authorized Dealers.
 

Bias King logo BIAS KING features one tube socket, enabling you to check the bias of your tubes one tube at a time.

Regular price:
$159.99

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Bias King Pro logo

BIAS KING PRO features two tube sockets, enabling you to conveniently switch between two tube readouts without having to unplug and replug tubes.

Regular price:
$259.99

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