Morrow SP7 Upgrade.


Currently using Morrow SP4 Speaker Cables on Low Frequency (bass) in bi-amped system. Various Speakers used, at the moment Revel Ultima Studio. The Morrow's sound best of the cables I have driving low frequencies. At the moment Morrow have 60% off in their trade up program, (I would trade up SP2's I have in a budget system). Anyone have experience going from SP4 to SP7's, and how much better? What other alternatives for bass frequencies would you suggest if not the SP7's?
initforthemusic
I've had solid core AQ cables both balanced and RCA in my rig for a while, and after buying a new amp without XLR inputs I needed a decent RCA cable…saw the Morrow ad and bought their "el cheapo" MA1 IC . When I asked when they were shipping the thing I got an email noting they're hand made (I hadn't read all the stuff on their site…SORRY!) and take a while…cables arrived with the 4 page break-in papers which I thought were pretty funny, kind of "out there", and 100% correct. A truly great sounding cable and it got me thinking about the trade up thing, although the 400 hour wait for cable nirvana tests my patience. 
Thanks, Wolf.  My MA3s (with Eichmann copper RCAs and 10 day break-in) are in transit.  I should be able to get them inn my system over the weekend.  I am trying to manage expectations, but I am excited.
I have been using the Morrow Audio SP7 bi-wire for a couple years now. They are awesome to my ears, I bought them w/ the short break-in option, they did sound a little rough for 100 hours or so but now w/ several hundred hours (who counts anyway) they are a great addition to my set-up. Bryston integrated, Silverline Sonatina's, Oppo 105D.
I estimate I put about 50-60 hours on the SP7's in my little system. Had a music session with a few mates yesterday and the 2nd half I put the SP7's on my Revel Ultima Studios bass frequencies ( hey there driving two woofers each so I figure there getting a reasonable workout). Very pleased, been giving them a bash today so I figure they have roughly 110-120 hours (inc. the 2 day break-in). I feel they are on the upward spiral, after that little ragged period. I'll swap them over to the HF posts in a day or two, could be interesting. If they keep improving as per the info. sheet I'll be very happy.