Manley Chinook Owners Tube Rolling

try the amperex Holland bottles, and better than any tube rolling is getting rid of those .47uf wima caps in the SS stage. replace em with .47 film and foil Nichicons.  you will be shocked at how much the Chinook opens up.

I posted last time above that if the chinook is laid out like the steelhead, then the gain tubes are the pair of tubes nearest to the centerline of the chassis looking from front to back. the cathode follower output tubes are to the left and to the right respectively of the gain tubes in each channel. I hope that’s not too confusing. And if it is ask manley  or your tube dealer.

Johnss, where can I have the caps replaced, does anyone know a manley qualified tech in So. Cal?

you'll have to find a tech in your area. The replacements are Nichicon XY series film and foil. The originals from manley are metalized film.
you can buy the parts from digikey.com
https://www.digikey.com/en/products/detail/nichicon/QYX2A474KTP/2117731
It takes 2 min to change the parts, hard part is all the pre-disassembly work first.

forgot to add the other thing that makes a huge improvement is replacing the metal film load resistors with Vishay VSR metal foil types. You will measurably drop the noise floor by at least 6db. 
@rbtstock , if you contact me off line, can send you plenty of pics.

best