miroslav
Cosmic Cowboy
I call BS on your statement that recording to 1/4" tape is 'superb'. That is either complete BS or you have a bad interface, connection, or setup issue. It just doesn't make sense.
As a total tapehead....I can agree with Jimmy that the tape ain't going to put in THAT much "magic" that you couldn't get when using a digital interface, nor will even the most basic interface crap out your recordings as much as you seem to thknk it will.
Something would have to be completely broken with the interface, or you're just using it in some very poor way, so that it's mangling the audio.
If you sound and play THAT great, as you say...do everything the same as you do when going to tape, then just substitute the deck for the interface and at most, adjust your levels accordingly.
The tape is going to roll off some of your high-end....the interface will not, that's about the most obvious difference. After that, there are subtleties that will differ between tape and digital, but not how you seem to be thinking or experiencing.
Looking for weird little solutions off the beaten path...is not going to be the solution.
Great tone and great playing should be relatively easy to capture.