Hey @munkeyfish, what kind of comments are you getting from your band mates?
A lot of raised eyebrows. They were in the camp/thought of this being a beginner type amp and it didn't help that I referred to as my back up amp while I sort out my GK MB212II issue.
In my one band, at our first show with the amp, my lead guitarist asked where the rest of my amp is at. The 210 and 500 head has such a tiny footprint and I didn't get a chance to try it at practice. I literally went from box to stage with about an hour or so to get use to the controls a bit. I treated that show as the backline was being provided for me. As you may remember, my first head had scratchy pots and the OD channel quit working, so I had to get a replacement that came in at the last minute. He was impressed that it carried the room so well. He had played the same venue the weekend before with his Red Hot Chilli Peppers cover band and his bass player there uses a Mesa 810 or 610? Cab. My guitar player was convinced I needed more speakers to be heard since his other bass player needed more.
My drummer has made the comment that at our last practice that the tone I am getting suits this band better. More of an old school vibe with a hint of modern. I think he is right. But I feel the GK suits my other band a little more, as the modern sound suits them a bit more. But I'm not discounting the Rumbles tone at all. It may sound better now in that band as well.
And I'll be honest, I'm not really in a rush to get my GK fixed (I think the speakers got toasted due to a Fuzz being set too high and engaged at concert volume ) I'm really wanting to expand my Rumble set up to adding another 210 and I'm really interested in the Bassman 500 and modding the cabs to lay on their sides for the Bassman. And going back and forth with Rumble and Bassman.
I will get the GK fixed at some point, but the more I live with the Rumble, the less important getting it fixed is on my to do list.
It is kinda funny, in one band, you have a Vox AC30, either a Splawn head or Port City head or an Orange on a port city cab and then this wee Rumble 500 on a 210 cab. (Was the GK that is bigger) on the stage. Not at all what you would expect to see. When I started in that band, I was using an Ampeg PF500 head and 2 PF115LF cabs. Looked massive, but the head kept going thermal in the middle of shows. It had to go. I was going to try another Ampeg head, but when I hit GC, they either didn't work right or sounded like butt. I had enough of that bad taste. Now the higher dollar ampeg heads were great, but not in the budget.
I'm getting along with the Rumble the more I use it. I like that I can move it easy. I like the small footprint with huge sound. I think my ah-ha moment was when I rolled the bass knob back to around 9/10 on the dial, that opened the amp up more.still plenty of bottom, just not that "pushed" lowend.
Sorry for being so long winded. But it isn't everyday that your eyes opened.