Mmitch, I have them in my SCD-1 and they are a significant improvement over the standard Audio Consulting silver transformers. Purer more resolving treble, more open & less compressed, more bass control. They are expensive, but assuming you've already upgraded clock, power, & other signal path components, the trannies are worthwhile.
Modified Esoteric D70 with the Silver Rocks
I am comteplating having my recently upgraded Esoteric DAC upgraded a second time with the Silver Rock Transformers. Has anyone out there had experience with this type upgrade. I am looking for feedback as to how these expensive transformers improved your unit, and if it is worth the high cost. Please advise. Thanks