I have used them for over a year now in conjunction with Purist Audio Venustas. Boa2's description is very good. I like the Aqueous/Venustas combination. I didn't care for the sound of two paris of Aqueous ICs in the same signal chain...too detailed and not enough warmth. The Venustas have a touch of coloration which is absent in the Aqueous, IMO. I tend to like a little color to suit my taste.
There is a fair amount of discussion in the threads about the characteristics of these ICs.
There is a fair amount of discussion in the threads about the characteristics of these ICs.