Anyone with Manley Chinook use a custom Power Cord?

I have the Chinook and have tried several aftermarket cords. Can't say I can really tell much of a difference. Power cords seem to do a lot more with SS gear than with tubes.

For the Chinook, if you want an easy upgrade, swap out the TL082 op amps at the rear of the unit and replace with Sparkos Labs discrete modules. The remove several curtains of grunge over what the TI parts do... and best off all, no soldering, simply unplug the stock units and insert Sparkos modules.
well work it

the Chinook sounds very clean in stock form. but when you insert the discrete op amps, the signal is really cleaned up. it makes the stock parts sound out of focus. Correct, they are not in the signal path, but do control the voltage going to the JFETs in the first stage. The other big improvement on the Chinook is to replace all the MC and MM load resistors (located on the back PCB bolted to the rear panel) with Vishay naked or Vishay VSR bulk foil resistors.  

The double. The TL082s are doubles, so want to replace them with another double.

almost as big as tubes, I pulled the stock tubes out of mine and am using Holland Bugle Boys.

On other subs, I don't know, have not tried them.