I wonder if you can help. I have recently begun to research into getting a better quality vocal in my project studio. I will have a vocal booth built soon and have recently bought some new microphones, namely AKG 414, Neumann u87i, Rode K2 and the AKG Tube Perception 820. Incidentally I still prefer the Rode NT2A on my voice but that’s just me.

Now I’m looking to get a good quality pre-amp however over the years I have bought countless audio interfaces with good quality pre-amps which go on to become unusable because of software updates or connection ports being discontinued. To this end I think I want to keep my next pre-amp separate from my audio interface and I would also like to transfer my pre-amp’s output digitally. I only need one channel and I’m drawn to the Focusrite ISA One with digital Card.
I would like help on whether you feel this is the correct approach given what I am trying to achieve and your opinion on the Focuriste ISA One.
Thanking you in advance

Amita