Did anyone experience Audio Prism's Ground Control

Budp,

I've been very happy with three pairs of Audio Prism's Reference Ground Control Spades on my speakers. However, they did not work well on my fully differential solid state amplifier. My fully differential CD/SACD/DVD player, with a tube output stage, goes directly into the amp without a pre-amp. Would the Reference or Standard RCA versions on the digital output (RCA coaxial) and on the video output (RCA) be beneficial for audio quality.

Best Regards,
John

Thanks Bud!