I just looked at my post and saw that I said to use tube buffers on the tubes. Obviously I meant to say tube dampers LOL. If you are looking for the pure honey sound that you get from some all tube preamps the Freya is not for you.It retains the focus of a high end ss preamp, but injects a lot of that sound that tube guys love. I have used a few different ss power amps with the Freya and have had the same overall experience with all of them. It tames the high end if you are using a hot speaker and provides a very open life like mid especially with female vocals.The bass is very solid and well controlled. The sound stage and imaging are not the best I have heard, but is top notch.This is of course with the Ken rads.With the JJ’s I was not impressed by the sound. I am now burning in my new Voyager GAN 350 amp and after 200 hours I will pair it with the Freya. I believe that this combo on my Legacy Focus speakers will be a match made in heaven.