Like the title says, I have a Markbass F1 that I'd like to trade for a similar type of head. This is just a feeler. Probably looking for a class D but I was a sucker for my Markbass LMII. I would love to find a Streamliner 600. Throw some ideas at me. Worst I'll say is no. I've got a Sansamp BDDI that could be thrown in for the right deal. This amp is in good shape, but has minor dings/scrapes at the corners. Not sure why, it bought it this way used. I bought the pro coverage for this head from Guitar Center but I don't know if thats transferable. Purchased around September. I will have to find the receipt. Amp works flawlessly and sounds good but is just not my cup of tea. For trade only at this point and I don't have cash to put out right now so straight or trade + cash from you.