NAD with a side of disappointment.

[Mike Oxhuge]

I'm going to swap preamp tubes tonight and see what that does. Maybe someone swapped a 12at7 in somewhere? Also have a good quad of 6L6's I could try if preamp tubes don't fix it. Otherwise I'll RMA that beeyotch.

[Maddnotez]

Yeah. I had a JP2C new and it shipped with a bad tube, exact same symptoms as yours. New tubes solved it, can't remember if it was pre or power.

[Vladimir Putin]

Yeah no way that is right. Good luck, bro!

[Mike Oxhuge]

And... It is fixed! Microphonic V3 tube. Removed all shields and tapped with pencil, found it right away, had a new Sovtek 12ax7 and wow! Now its got nuts. Now it dials in how I expect a Mark to dial in. I can already tell I like it way better than any other Mark I've owned except the IIB loop moded Coli and I would say they are both different but very close to the IIC+ sound. Mark IV mode sounds pretty close to the Mark IV I had. Killer cleans and reverb. Crunch will work out once I figure out the midi implementation with my Boss GT 1000 and I can ise the graphic and PEQ's to dial it in as well as boosts. I almost bought the IIC+ reissue instead but I already know tonaly this is close enough and so much more liveable with all the features. Unless any other problems pop up, I'd say it's a keeper.

[Mike Oxhuge]

And that defective tube had an obvious visually bad manufacturing defect where the bottom of the glass was almost separated and had a ridge where it was formed. I never would have put that tube in any amp based on appearance alone.

[Mike Oxhuge]

Obligatory rig pick. Put a Boogie logo on the cab because shits gotta match.