Apologies to slaw, but I have come to think that SR is throwing sand in the public eye with $150 fuses and many (but not all) of its other tweaky products. While I also question the bang for buck value of very expensive power cords, at least there you can objectively identify desirable characteristics and aim to achieve them.
I own a Steelhead. I’ve thought about upgrading the load resistors to nude vishay, but my prior experience with that sort of tweak on other phono stages suggests to me that there is little to be gained. I could be convinced otherwise.
Like I may have written above, the major kludge in the Chinook if the output stage is like that of the Steelhead is the choice of output coupling capacitor. The value is way higher than necessary for good bass response and the quality is mediocre at best. Upgrade those and you will be amazed.