The Kairn is NOT an upgrade from an 8000Q, it's just softer and a touch veiled (and I've heard dozens of different ages and board layouts to confirm this)
Get a Quad preamp and soup it up. The LATE 44 with phono's is good and can be made better with op-amp changes, the 66 is lovely and open, if a tad lacking in "slam." I love the 77 for its atmosphere, sweetness and all-round "musicality."
The cheapest option would be to ditch the Linto altogether and get a Croft Series 25. The 405 gain may need to be reduced to match it better, but the sound would be the best of all the options I've discussed - My old croft preamp is better than a Kairn and the new ones will be at least as good IMO...
I can't go on and I can't go back, I don't feel so matter of fact,
I tried and tried to make good sense, What's the good to try it all again?