Dimebag used his own signature guitar strings made by DR strings called the “Hi-Voltage” Electric Guitar Strings. He used a 9-46 on all the guitars in standard tuning, and the 9-50 set on his drop-D guitars.
I’m using two different custom-gauged sets of DR strings which will soon be released as signature sets. One set is .009-.046 set and the other is .009-.050. I use the heavier strings on the lower tunings.
Dimebag Darrell
For most of his time in PanterA, Dimebag used 9-42 for “E-standard” tuning (adding a 46 for “drop D”), and 9-46 for “D-standard” tuning (adding a 50 for “drop C”, and a 56 for the “drop G/octave” tuning, used on “Sandblasted Skin” and “the Underground in America” from GSTK).
With Damageplan, Dime alternated between 10-50, 10-52, and 11-52 for their new songs (depending on the guitar/tuning), and began using thicker strings when playing PanterA songs (like 9-46 for E, and 9-50 and 10-50 for D).