spring reverb

Hi

I'm on a mission to to isolate my spring reverb in it's own amp. Meaning the dry guitar is miced separately and the reverb is on one of my combos.



Using a preamp I'm able to get the reverb signal to the amp by using the preamp before the in of the verb but it's really quiet. Unfortunately I don't have a spare preamp to increase the signal after the reverb just before the amp. Is that what's needed? Kind of want to know before I make the long truck to the music store.

Thanks

spring reverb