Alessandro Bias and Matching Meter


Has anyone heard about this device/piece of equipment used to bias power amplifier tubes/power amplifiers? How does it work? Can I use it to bias my audio Research Tube Power Amplifier which has 20 6550 tubes? Please I need your help and advice.
Thanks
jaguar1845

Showing 1 response by jaguar1845

It is the ARC D-250 with (16) matched 6550 power tubes and (4) 6550 regulator tubes.