Here is an unconventional recommendation. Get a Silk Audio SA38/Yaqin MS34B integrated sold on ebay by a US seller. A great bang for the buck and sounds better than my Primaluna Prologue and a step up from the Jolida/Black Ice 3502 i use to own. Also owned a Cronus non magnum a long time ago, nice amp. Your Lintons are fine speakers, make sure you put reliable power tubes from a reputable dealer if buying used, otherwise premature failure and loud pop!
Tube preamp if you want less hassle, there are many options. Mapletree over anything Schiit or AVA for starters.