How to get the most out of Jadis DA50S?

I want to thanks Pierre Gabriel for his kind reponds.
thanks so much. Also I would like to say thanks to other contributers as well.

I enjoyed the Jadis very much.

Regarding impedance adjustments in jadis them are internal adjusments. At least on the ja-30, 80's and se-300b.

For those that have had a chance to hear the 30 and 50, what difference do you find? The fact that the 30 accepts EL34s and KT88s seems to be a bid selling point to me. The 50 seems to weigh quite a bit more, I assume bigger trannies - how does that translate into sound. I have had an Ars Sonum with my Merlin VSM, but the Jadis has always caught my eye and I'm looking for my last integrated; Jadis owners seems to stay owners for a long time.

The 3rd integrated I would consider would be the VAC Avatar.