Moved to post again on this most excellent amp / cab set up.
Every time I use it I'm reminded of how perfect it is for my needs.
I am not interested in entering a slanging match with those of you who dislike the Shape feature. It's a rehash of the Trace Elliot argument and one man's meat is of course another's poison.
The crucial thing as far as I'm concerned with my little RM500 1X12 combo is pairing it with the 1X12 extension cab. It just comes to life. Room filling bottom end and perfect defined melodic midrange.
I use the shape button (it's never off!) and boost the mid control to taste, then I'm nearly good to go - wherever I'm playing.
The only other thing I need to do is dial in just enough 'grit' from the overdrive and my 'clean' sound is complete.
I have had a multitude of amps and cabs in the many, many years I've been playing. I have an embarrassment of options today of all shapes, designs, makes and sizes. I confess I usually take this out to save space in the car and to save my back. However every time I do I end up amazed by how good it sounds.
It's a belter.