AC/DC's "Walk All Over You", The Schaffer Replica™ Series (S

[Lefty Lou]

I feel like such a NOOB that I didn't check into, or wasn't aware of the Marshall Mode Four amp. These heads look like the ones that AC/DC had stage left and stage right, the more I reflect back to that AC/DC "Back In Black" concert, I'm relatively assured that these were the heads. Although, each head was slightly bigger in dimension than a MF350 to accompany the oversized slant front 4x15" Marshall cabinet, with each half stack facing one another (stage left and stage right). It's entirely possible with the larger dimension head that they could've been early prototypes of the original MF350 only with output valves instead of a SS output section.