I have a used Chinook (purchased from audiogon seller) without noise issues. I also purchased a used Manley Shrimp preamp that I sent to Manley for the upgrade to Jumbo Shrimp (took about 3 weeks). Great company to deal with. Warranty and after-market support is often an overlooked factor when considering a brand.
Manley Chinook
In Dec 2015 I purchased a Manley Chinook SE from Upscale Audio. The box I received and serial number stated a SE version but it was actually the standard version. Kevin D. asked if I wanted to return for the SE model and we agreed that he would send me the Philips PCC88 tubes instead. This weekend when I went to the room for a listening session once I powered up the Chinook a loud hum persisted. I checked all connections and they were good. Changed the tubes - still hummed. Changed the ICs - still hummed. Moved to another audio setup - still hummed. But, after being on for about 30 minutes the hum lessened but a scratchy/crackly sound could be heard in the background. Yesterday I sent it back to Manley for diagnosis. I estimate there is less than 20 hrs use. When I bought this unit I did my research and felt that this would be a workhorse with no problems. Has anyone else experienced this type of phenomena with the Chinook. I have hooked my VPI TT back up to my onboard phono stage on my McIntosh C2300; as good as the Mc is I miss the Chinook.