Quicksilver Remote Pre (6DJ8) & Cary SLP-88 ... Need Opinions

No need to have Mike rewire anything. I use this Y adapter with my QS or any other preamp for a 2nd preamp out!!
https://www.audioadvisor.com/prodinfo.asp?number=AQM22FHRD

No need for good interconnect cables when using a low grade Y-adapter. Mike re-wires the QS Linestages for those who prefer not to insert inferior y-adapters and extra connections into the signal path.  

@hilde45 has tested his QS Linestage with the REL speaker level and the 2nd rewired RCA pre-out and might be a good source for reference comparatively.  

I'm running a pair of subs off the tape outs (converted to a 2nd set of pre outs) on my QS (12AT7).
Its a zippy sounding preamp, definitely not tubey. The "tubiest" I was able to get was a pair of Philips 7062 replacing the junk stock tubes.
Undecided on whether or not I'm keeping it. Its decent if unremarkable.

Hello go church 
What’s the rest of the system Did you remember to invert polarity your tape out is out of sinc 180 for subs so try inverting and run subs 180