I have been debating on selling my Ampeg B100R for a GK 210, since the 210 can be upgraded to 300 watts with an extension cab. I was told on another board that the Ampeg has more headroom. I play a lot of hard rock. Clutch, Godsmack, AIC, and dirty southern rock kinda stuff. I have access to my guitar players Peavey TKO 115. I noticed you can have it go from 75 to 150 watts with an extension cab, would this be an option over the GK 210 or Ampeg B100R? Though the Ampeg and GK do have better tone. Last but not least I have an old Laney Linebacker 100 bass head. I only have a Peavey 2x12 guitar cab for it, I have never had a bass cab for it since I have been using the Ampeg or Peavey, Anyway I noticed it has 2 speaker jacks. It says 100 @ 4 ohms on the back. Would each jack be sending 100 watts into 4 ohms into two separate cabs, or would it be spliting the signal and sending 50 watts into two ohms? I seriously have never heard this Laney cranked into a guitar cab. Although it is more than a guitar cab can handle a 1/3 of the way up.