Update: the specs are in.
3*12AX7 preamp tubes
2*6L6 power tubes
5AR4 rectifier tube
45W (approximate)
Aluminum chassis in pine cabinet
Dimensions: 330×215x240mm (WxHxD)
Basically it’s a modified Fender Bassman circuit, which in itself bears a lot of similiarity to early Marshall circuits, with two channels of goodness . . . Lots more detail at Brad’s Lab.
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Brad’s new amp, as discussed here at Andy’s blog.

Here it is with Guillaume (X is Y), its owner.

Specs coming soon . . .
what are the people saying?