Advice: 1st Tube Preamp! - primary - Linn Linto analogue - secondary 5.1 (not HDMI)

[clarets]

Looking to try out Tube Preamp to replace Linn 5103.
Critical is 2 channel stereo feed from my TT through Linn Linto phono preamp. Has to stay all analogue!
Secondary is 5.1 feed via Sony TV digital optical feed.
Oppo Bluray, Cable and AppleTV HDMI outputs go to TV and all audio is through new (2019) Sony Bravia TV digital optical feed.
Tube Preamp does not need HDMI but should process digital optical feed into 5.1.
I have a predisposition in favor of McIntosh but am open to all suggestions. Like warm but clear tones hence my cartridge. I'm a value rather than a fixed budget shopper.