Guitar Amp Tools
A Tube Amplifier Test Bench
A True Mutual Conductance Tube Tester, In-Circuit Gain meter and Idle Current Tube Matcher. The tester also displays the High Voltage and Bias Voltage of the Amplifier itself
Mutual Conductance Test
Designed for guitar and bass amplifiers
For getting the most out of 6L6GC and EL34 based vacuum tube amplifiers
Compatible tubes
Tube Testing
Almost without exception, devices marketed as a "Tube Tester" are not testing the tubes at all. These devices measure the high voltage of the amplifier and the cathode (low voltage) current. Then multiply them together and end up with a somewhat inaccurate Biasing meter
Mutual Conductance Test
Tube matching
The small signal tubes are single file, so there's nothing to match. The output tubes are in pairs so matching is important for several reasons
Tube Matching
BIASING
Allowing for instant Bias adjustments when replacing tubes and making adjustments to the Bias as the tubes age to get the best sound and longest life from the tubes
How to Set the Bias On a Tube Amplifier
Gain
The primary reason substituting a 12AU7 for a 12AX7 makes such a difference in the sound of the amplifier
$599 USD
© 2023 All Rights Reserved.