Cathode bias mod for a Vibroking?

[Tony Foran]

Anybody ever hear of this? My friend was talking to Gerald Weber about this mod and I told him I would check with you guys. Thanks.

[Jeff Flowerday]

There's no reason it can't be done. It all depends if you are looking for less head room, nice feel ealier and a little looser bottom end.

[Blue Strat]

What Jeff said. Any amp can be converted to cathode bias (unless it already is cathode bias) operation.