Crazy parallel loop idea

[12AX7]

Go easy on me, i'm an electronic cripple. Some one elsewhere suggested something along these lines, tho it wasn't detailed at all so i had to use my imagination and fill in the blanks. I was going to give up on loops after several tries that were less than spectacular, so this is a parallel loop idea that i drew up to ask your opinions. But ***BEFORE*** you reply read this whole post and be sure to note i am NOT suggesting it will work exactly as in the drawing. It's just a way i was hoping would work along with a tube stage(S) to allow me to mix the DSP's wet signal without the amps dry signal having to go thru extrat stages as they do in parallel loops i';ve seen. I was thinking which ever connection to the DSP (input or output) will need impedance or level matching i have a spare tube for that. What i was thinking is about impedance at the DSP in or out, which i have no idea how to determine if they come close enough or are way off, or how to deal with them.....how to configure a tube stage to deal with it. Levels however i don't think are crucial because the DSP has a ton of level adjustment and the signal returning to the amp can be very weak because the dry signal will be turned off in the DSP and i only use a touch (probably 15-20%) of delay or verb. And barring unusable delay repeat tone i can live with degradation as long as the dry signal never leaves the delay. Thoughts/ideas/insults RE: my stupidity as electronics go? Wait.....forget about that last one....i'm already aware of the answer