I am looking forward to your impressions of the Prima Luna, I was thinking about bi-amping my 3.6s and using the Prima Luna's for the mid/treble.
I have no experience in bi-amping maggies, and the only thing I can say, this integrated amp is no fuss and a serious contender to the Karan. Somehow they share the same sound signature, while the transistor has more hump and fuller body, the tube has more detail mostly because of more air and separation between instruments.
I spent half of this gloomy day with my reference recordings and I enjoyed the listening for most of the time.
1.7 do require power and the standard premium dialogue delivers right enough playing loud in my reverberant room. I measured the SPL again to be sure I had the right setup and by ear and JBL toolkit I finally placed the bass side of the panel just a quarter of an inch closer to the listening position.
I will dig in more in a week or so when my new tube DAC is coming, before comparing both amps neck to neck again and making the sad decision between the twos.