If the tubes aren't warm enough for you, perhaps there could be another area to look into. What kind of interconnects are you using? Changing these cables might "warm" up the sound, a good pair of copper cables instead of silver. I've recently be fooling around with power cords and purchased and electraglide cord that has given my system a greater sense of depth and emotion.
good luck, there are so many variables to look at.
ivan :)
good luck, there are so many variables to look at.
ivan :)