Some additional observations on the Serene preamp. I disconnected the Serene from my office system (Magenpan LRS+ and CODA #16) and drove it down to my friends place in Ventura, CA.
I wanted to hear the new RAAL 1995 Magna and Immanis headphones. I am a 2-channel guy but the older CA-1a and SR1a are spectacular, and I wanted to hear the new ones that are supposedly way better.
I took the Serene because it has a headphone only XLR output on the back. Last week, I spent $200 and bought the required cable from Kitsune.
My friend was building a crossover less speaker. It was a prototype and we listened to it with a passive preamp (volume control) that he had also built and my Serene. After just a few minutes I could tell that the Serene was outclassed by the passive. Everything was better across the board. I would expect the same result if I used that same passive preamp with the CODA #16.
My friend is thinking of building a balanced 4-input passive with dual XLR outputs. I told him to keep it cheap and let me know. I am keeping the Serene but no longer with the CODA #16. I will move the Serene downstairs to function as a headphone amp and 2-channel preamp.
The 2 new phones I heard were amazing. So good that I want to get the one I preferred for rock music, the Immanis. I am not sure how I can pull that off without selling the CODA #16. If it has to go it will, to get the Immanis.