preamp too loud

My Audio Horizons 2.3svb tube preamp volume control rotates from 7 o'clock (off) to 5 o'clock (max loud) - about 270 degrees of rotation. With only one source (my DAC), the volume gets too loud (around 95db) at 9 o'clock. In other words, it's too loud with rotating the volume control only 20-30% of its range.

Any suggestions for allowing allowing the volume to be more gradual? What should be soldered to what? Thx!
 
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or it can be "T" shape .


Or you can buy online 10db inline attenuators.