I just put a CR in my '74 Traynor Guitar Mate today. Compared to the original speaker and a Vintage 30 I had in for a while this CR is like a dream come true. I had done alot of reading and listening before I settled on the CR and I'm glad I decided to get it. Apparently the Guitar Mate is known to be a very bright amp (mine was) but the Eminence totally tames the excessive brightness. The highs are still there but they are rounded and not piercing or shrill. My Tele has a much stronger voice now. There's still lots twang, it's just thicker and sweeter. Prior to this speaker change I was intending to have a little mod done to the amp to reduce the amount of treble. Now there's absolutely no need to do that. In general the tone from my amp has become very warm and vocal-like and it handles the overdrive from my OD-3 very nicely. It is one of the nicer blues sounds I've played with. Harmonically rich, thick and singing. I would say there is no muddiness but a nice warm (how many times have I used the word 'warm' already?) clarity. These speakers are very reasonably priced as well. I'm really, really pleased with this speaker.