If power cables make sense to your system, high quality power transformers and power chokes will make even MORE sense since they have hundreds and thousands meters of wires inside!
On the other hand, if speaker cables brings improvement to your system, high quality output transformers will bring even MORE improvement. Same rules apply.You will not fully realize the potential of your system until you have used dedicated audio grade transformers from J&K Audio Design. Period.
J&K Audio Design