I had a Primaluna Prologue II integrated amp for 13 years without even a hiccup !
I have now had a Primaluna Dialogue Premium integrated amp for @ 3 years that has been just as reliable . They are a tube rollers dream . You can fine tune the sound to almost any flavor without the need for biasing , just plug-n-play .
The North American importer , Kevin Deal at Upscale Audio , is a joy to deal with and quite knowledgeable about all things audio .
I whole heartedly recommend Primaluna .
Happy Tunes