What speaker cable made a major difference in the sound quality of your speakers??


I am curious what speaker cables made a big "jaw dropping difference" in the sound quality of your current speakers.  What most impressed you about the difference;  that is, overall musicality, tighter, deeper bass, midrange clarity and soundstage depth, etc.etc. 

Keep the price of the speaker cables chosen or auditioned at  between $800- $1000 or  from  $1000-$1500. Was the cable bought new or used??

  Thank you,   SJ

sunnyjim
I have the Crystal Clear Audio Cable (Magnum Opus) 99.9999% (6N) Silver and made a huge difference in sound Quality.  http://www.crystalclearaudio.com
@sabai - Interconnects are pure silver with insulation. Connectors for interconnects have insulation, they’re KLEI pure Harmony, so they’re pure silver. I’d need insulation, though. Kids and pets abound in my house.
Sorry folks my link to Townshend Audio in my earlier post was not correct it should be: www.townshendaudio.com

Sorry for any issues caused.

'Jaw-dropping' is asking a lot of any improvement, as others have said. However, I have found that all the cables can tune a system to a really valuable degree. I used some home-made copper cables for a while that were virtually identical to Wireworld Polaris (old polaris). I also had QEC Silver 12 (which is actually copper) that was very, very slightly better than Nordost Purple Flars.. or perhaps a tiny bit better. However I purchased some Analysis Plus Oval 8 and they are wonderful; very easy-sounding and balanced top to bottom. Definitely in your price range used. 

To Maurice:   Can you describe what you like about the Clear Day Double Shotgun speaker cable. In your opinion what improvement in sound quality did it offer and  were distinctly audible.

I auditioned Clear Day Single Shotgun and thought it very good, but a tad on the bright side.  At the time I was using Acoustic Zen Hologram II speaker cable. which retailed for $1500  for a an 8 foot pair. My speakers at the time were the AZ Adagios. Overall I thought the AZ cable was smoother.  I ask Paul at Clear day if he had a 6 ft pair of Double Shotgun, but he did not have them available the 2 times I asked him  He is good guy and easy to work with.  

Thanks again to all who responded. The response has been very good and informative.  SJ