I owned a Synergy IIi for many years. It's a fabulous preamp. I traded it in to get the Ayre KX-R preamp, as I have several other Ayre components. The Capri is not a better preamp.
Husk, If you have any specific questions about those shorting plugs, I'll be glad to relay them to JRDG. I only know they are made by Cardas and I am leaving them where they are on my Capri.
If you do use shorting plugs, make sure they actually "short" the audio signal (i.e., wire the signal to ground). I believe the Cardas product only covers the outside of the RCA inputs rather than shorting them.
As JR suggested, you can use a cheap pair of RCA IC's lying around to make shorting plugs. They can be purchased as well (with high markup I might add).
And remember NOT to use shorting plugs at the RCA outputs!!!
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