I Have owned my Manely Labs Chinook for quite sometime, It is very hard to beat, I have tried the BAT preamp and for me and my system the sound is very dry in the midrange and dominating bass drive ( a little too pronounced) and the uppers are not extremely extended, all in all I was dissappointed in the BAT sound I wanted to like it too. Nothing beats the Manely Labs Chinook in the 2K-2.5k range, you’d have to cough up $5k to get better sound. IMO. The 6922 tubes it uses are THE tubes for great vinyl sound.
Matt M
P.S. I find the Prima Luna Pre amps to sound very warm and rich and velvety smooth. I would look to demo some different Pre amps , your Chinook phono stage is not holding you back.

