Fuck it, bought.
I may try the 8100 into 5150 but I'm not sure I even can. I don't have a 4 ohm cab that I can use as a dummy load.
Here is 8100 into 6505 power amp.
Mesa os cab>57>API
Clip features in order:
8100
8100send>6505 return
6505
triple recto
Thought it would be good to hear a comparison of all these,
The 8100 is super bright and present compared to the 6505 and recto.
I used the Lasse/Mago DI set for this.
http://dl.dropbox.com/u/2133088/8100-8100>6505-6505-Triple Recto.mp3