I think I have the answer to this but wanted to post the predicament here and see if someone can perhaps come up with the solution.   Currently I use the Creek volume control passive (obh10)  which is pretty straight forward..  line in/line out--interfaced between the Csp2 & my Taboo.  works great--gives me remote volume control in br system.   I bought a OBH22 as it has tape in/out and want to move the Nak into the br.   I am going to try and upload a pic of the OBH22 --suffice to say. it has line out,  tape in/out,  and 2 line level source inputs.    Obviously ,  I can use this directly with the Taboo but I dont want to eschew the Csp2.  And--heres my take on it--- I cant interface the OBH22 with the CSP2 because it does not have a line in except for the line level source inputs and dont think those will work due to impedance issues.   And even if I could somehow utilize the OBH22 it would have to be in conjunction with the OBH10---thats 2 passives hooked up to the CPS2 !
Dont want to go there.  I'm thinking my alternative is to send in the CPS2 to Steve and have it retrofitted to have tape in/out jacks.       Does any of this make sense?
Even if the OBH22 had a line in I dont know how that would work with all the sources plugged into the OBH22-- like would the gain still be generated by the pre?     As it is now ---to be clear-- the  2 sources in this system are plugged directly into the CSP2 taps and as mentioned a line out goes to the passive and line out from passive goes to the Taboo.    [smiley=simp48.gif]
This system is mated to the MG944's  nice synergy.   In the system is a Rotel transport RD980 (Rotel's attempt back in the day to compete with big guys for a decent buck)   Shrek D2 ,   The other Source is a Sony ST-J75 tuner gone through by Mark @Absolute Sound labs as a kind gesture  and PR for his work.  The sony is renowned for its very low noise floor.  What is really important to note is I fly FM only because I have rooftop rotatable antenna which is mandatory to optimize sonics.         Hooking up components is not my strong suit.  No matter how much I read up on the stuff I forget soon what I read.   Steve suggested the passive arrangement I am using now.   Should have checked further before I bought this OBH22.  It will probably be up for sale.  Looks like new.