Gwalt, glad to hear that the CAT Black Path preamp finally showed up and now you will be enjoying it in your super system.
To say a BIG smile will appear on your face once it is broken in a little, is an understatement! These preamps rarely show up on the used market...and for VERY good reason. Ken has ’sharpened’ his design over the years, but IME even the older models can still show off almost all of the current competing contenders...and with ease!!! Says a lot about his newer gear.
Remember, consider tube rolling as a way to add some nitro to the engine, but don’t do it until some time has gone by. You will shake your head in amazement once those NOS tubes are rolled in, LOL.