Admin Post Recently installed a set of Thomastik Infield JS111 strings on my Duo Jet and had some thoughts regarding the differences between them and the D'Addario Chromes I have been using. IMO, either string is good sounding and a good choice for many Gretsch guitars. The TIs tend to have less diameter on the lower strings versus the Chromes. A set of Chromes with an .011 on top will have an .050 on the low E where the Thomastiks will have an.047 on the low E. This results in a lower tension set overall. However, my approach differs because I ordered a set of TIs that was closest to the gauge of the lower strings and substituted lighter strings on the upper three positions. This results in higher tension on the bass strings without compromising the bend-ability of the upper strings. The results are pleasing, at least to me. My little Duo Jet feels a lot tighter now and higher string tension somewhat improves the timbre of the instrument. I wouldn't say that there is a dramatic difference in the sound but I would say that there is a significant difference in the feel and the responsiveness of the instrument. Comparing the tension charts employed by both manufacturers is revealing. The string tension on most of the Thomastik sets is very even while in the D'Addario sets the tension on the low E is usually at least 2 lbs less than that on the A string. This is almost certainly a huge factor in the difference I feel in the guitar since rest ringing with TIs. No hate for Chromes here, they work great on my Club and my 6120 DC but I will be experimenting with TIs.