Marshall AFD100, le topic

C'est quelle marque de lampe?

SED c'est bien.

We haven’t disclosed it yet but this amplifier features an auto-biasing function which works together with the output power control. We’ve been working on it for more than a year now as it may well appear in some other projects, but we have decided to include it in this amplifier as well. The power control allows the user to obtain power amp distortion at volumes as low as 0.1W going to full 100W with the simple twist of a knob. With a trimmer pot located on the rear panel, the player selects the desired biasing current. When triggered by the user, the amplifier performs a complete biasing job by itself. This feature can be seen as having a little man inside the amp rotating the bias pots and measuring the current for us. Lets highlight too that the biasing is not only limited to the full power control but is performed in all the power range ensuring proper operating conditions at every output power setting. For convenience four LEDs on the rear panel show us if there was any biasing failure. Apart from the obvious easier maintenance, mixing output valve types can also be done without any problems, just plug the valves and let the amp bias them. The self biasing feature was praised as a 'gift from Heaven' by Chet, Slash's guitar tech when first introduced. No more need to get the multimeter, open the amp and tweak the trimmers !

C'est quoi l'intérêt de l'AFD5 quand on a déjà l'AFD100 ?