amp issue

Hello everybody, I purchased an used Ampeg RB110 a month ago, it was properly working and i was enjoying playing it for home practice. Since few days i started noticing a change in the tone, it started to lose some low end and have a slight distortion when playing higher notes, now it is...

First post! Though not a high-spirited one… I just received both a brand new GK Fusion 800s and Mesa Subway 115. They sound incredible, and I’m amazed at how loud these two can get coming from a Fender Rumble 100. An issue came up though. At the following settings, I can get very noticeable...