Did anyone experience Audio Prism's Ground Control


Fellow Audiogoner's

I wonder if anyone has any input on Ground Control spade versions? I am curious about the impact of these pigtails on your system's overall sound?

I also have their quiteline filter (4pack) installed in my HT room and they have helped lower the overall noise floor.

My gear -
Krell Showcase Pre-Amp / Processor
B&W 803s and 804s (rear)
Marantz UD8004
Audience aR12
Audience Au24e speaker/interconnects.
PAD Power Cables
128x128lalitk
Hi John,

I don't mean to scare you. The RCA GC's to a DAC ground appear to affect the cable load and the clock looses sync and the bitstream quits. This to an external DAC with the RCA on that digital ground. Unplugging the RCA solves the problem in about 2 minutes and nothing further occurs. In my Sony SACD etc player, an external PCA onto the spdif with no external DAC connection also shut down the player. I had to turn it off to get the unit to reset. No further problems. So, the GC's don't hurt anything, they just make em mad.

As for the video application, I have been told that plugging an RCA into a video player is helpful. I don't know anything about these devices so I have no cautionary words. Blacker Black and more vivid colors were claimed in both conversations. I am a bit skeptical, but again, I have no experience here.

Bud
Just an update.
I have found that using a Reference RCA along with a standard RCA on my Cary 306 Pro CD player provides the best of both of the RCA qualities.
That is, large deep soundstage and precise highly detailed imaging.
In addition to those two RCA ground controls I now have one on my Oppo BP-83SE, one on my LCD and one on my Squeezebox Touch.

Note:
I removed the RCA ground controls from my Preamp and Amp; there they provided little if any value.

I also have the 2 sets of spades of standard ground controls on my Andra 2 Speakers along with a set on my Amp.

On my Home theater speakers, (B&W) I have a couple of sets of the standard spades. Soon to aquire a few more to complete that system.

Bud, I still say you are a Genius!
Ozzy, which version of the GC on the LCD did you use and what were your observations of adding it? I just ordered a full complement of the reference GC's for my speakers to begin checking out the benefits. I ordered the banana versions as my spades are rather large to begin with and I dislike stacking spades on speaker terminals.

Has anyone tried an RCA GC on their powered subwoofer(s)? I have two JL Audio Fathom F113's I would also wonder if adding them to would benefit in the bass arena?

Many thanks. Just beginning my foray into the GC world...

Richard
Oddeophile, I'm thinking that the Ground Control RCA's are best used on front end equipment.
Such as a CD Player,Squeezebox Touch, Blu Ray player and yes a LCD TV.
The TV is a tough one though. I have gone back and forth between the Ref and the standard RCA and still cant decide which is better. Right now I would say the ref. I have it plugged into one of the video composite inputs. But I suppose any input would suffice.
The improvement is a slightly sharper picture with more depth and deeper colors. And of course then the TV Audio is sent through my Multi channel Receiver where that is also improved.

I also own a JL 113 Sub but have never tried a GC on it.
Yet...

Ozzy,

I read you have 2 rca GC on your Cary cd player. I am running XLR wires , so I assume you only need 1 GC on the negative rca out jack. Would that be correct?

Can you tell me where you put the other rca GC on your Cary, beside the rca out and what degree of improvement you noticed using 2 GC rca versions on your Cary.

Thanks