Bugera V55 Gold Pin Option

The non-Infinium amps are adjustable bias and they do have test points. Unfortunately Bugera amps in general are copies of the Peavey amps and they chose to use bias test points that measure the negative voltage in the bias circuit rather than the actual plate current draw of the tubes. This is not a very accurate way to set the bias.

The most accurate way to set the bias is to use a bias probe and a Multimeter, or our all-in-one Eurotubes "Pro One" bias probe that reads both the plate current and the plate voltage simultaneously. These are available under the "Related Products" tab.  NOTE: you will need a socket saver to use under the bias probe because Bugera recesses the sockets below thew chassis!

You can use our Generic bias video for reference which we did on a Marshall 800 the procedure is the same.

The video below explains the difference between bias probe types.