I've got a NOS Blues Jr with the Jensen C12N speaker. I like a bright spanky clean Fender tone with healthy lows, but the C12N doesn't deliver on the lows, and it breaks up too fast. The Texas Heat appears to be the #1 recommended choice for big clean tone, but I am concerned that it might attenuate the high end. For those of you that own a Texas Heat, does it retain the high-end well? TIA!