Since we are excluding Shitt I will add that I got the new
https://www.schiit.com/products/mjolnir-3
preamp/headphone amp. It has to mostly work as a preamp to my Schitt Aegir amp and then into my headphones. The integrated headphone output will be used with a second headphone I have.
I was thinking of getting the Benchmark HPA4 which has similar functionality (and more) to replace my Benchmark LA4 preamp. However, I decided to get 2 preamps and save my self the chance of accidently messing up my system using 1 preamp with 2 amps.
I have 15-days to decide if this Schitt can make me happy given my expectations from using the amazing LA4 preamp. The Schitt Freya+ was not as good for me as the LA4.